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A Snapshot of The German Cannabis Market: Year 3

By Marguerite Arnold
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Despite the limitations and privations caused by the COVID-19 pandemic, Germany’s market is “up” in terms of sales and overall insurance approvals. For all the victories however, there are still many kinks along the way. That is of course, not just on the medical front (where flower is yet again in short supply this summer), but also in the CBD space.

There is also clearly a drumbeat for more reform afoot in a country which has bested the COVID-19 pandemic like few others in the world. And like France as well as other countries in Europe, the conversation across the region has turned to including cannabis in recovery efforts, and in multiple ways. That includes not only relying on a new crop and industry for economic revitalization, but also of course, on the topic of further reform.

A Brief Overview Of The “Modern” German Cannabis Market
Germany kicked off the entire cannabis discussion in a big way in Europe in the first quarter of 2017. The government got sued by patients and changed the law mandating that public insurers had to reimburse the drug. They also kicked off a cultivation tender bid which promptly became mired in several rounds of lawsuits and squabbles. The first German grown cannabis will hit pharmacies this fall, but it is not clear when, and the unofficial rumour is that the pandemic will delay distribution. The German distribution tender has been delayed three times so far this year.

In the meantime, the German market has developed into the world’s most lucrative target for global exporters, particularly (but not limited) to GMP and other certifiable high-grade cannabis (and in all its forms).

The German Parliament Building

Other Issues, Problems and Wrinkles

Nothing about cannabis legalization is ever going to be easy, and Germany has been no exception.

The first problem on the ground is that the supply chain here has had several major hits, from the beginning. This is even though the supply has come from ostensibly otherwise reliable sources. Companies in Canada and in Holland have all had different kinds of problems with delivery (for different reasons) throughout this period.

Right now, there is a major reorganization afoot in Holland which may also be affecting the recent decision on the Dutch side to reorganize how the government picks (private) German narcotics distributors. Aurora also had product pulled last fall because of labelling and processing issues. But these, no matter how momentous momentarily, are also just waves in a cannabis ocean that is still choppy. Domestic sales continue to expand and foreign producers can still find a foothold in a still fairly open market.

As a result, even with a new dronabinol competitor, Israel, Australia and South Africa as well as multiple European countries now in advanced export schemes, the supply problem is still a thorny one, but not quite as thorny as it used to be.

However, On The CBD Front…

Things have gotten even more complicated since the repeated decisions on Novel Food at the EU level. Namely, last year’s decision that the only CBD extract that is not “Novel” is extracted from seeds, has thrown the entire industry into a major fluff. Especially when such decisions begin to filter down via a federal and regional approach. This has begun to happen. Indeed, the city of Cologne, in Germany’s most populous state just banned all CBD that is not labelled per an EU (although admittedly) non-binding resolution on the issue.

This in turn is leading to a renewed push for the obvious: recreational cannabis.

Where Is the Recreational Discussion Auf Deutschland?
The recreational movement, generally, has been handed several black eyes for the last three years. Namely, that greater reform was not preserved in the first cannabis legalization that passed, albeit unanimously, in the German Parliament in 2017. However, as many recognized, the first, most important hurdle had just been broached. And indeed, that cautious strategy has created a steadily increasing, high quality (at least for the most part) medical market that is unmatched anywhere in the world except perhaps Israel.

german flag
Photo: Ian McWilliams, Flickr

Now, however, there are other issues in the room. The CBD discussion is mired in endless hypocrisy and meddling at both the state country level and the EU. There are many Germans who are keen to try cannabis beyond any idea of cannabis as therapy. Remember that Germany has largely managed to contain the outbreak, despite the emergence of several recent but isolated hotspots of late. In Frankfurt, for example, with the exception of more people on kurzarbeit (which is not visible), most street traffic proceeds apace these days with masks on, but with that exception or two, feels pretty much back to “normal.” And of course, economic development in the form of exports is one of Germany’s favorite pastimes.

Beyond that, the needle has absolutely moved across Europe. Several countries, including Greece and Portugal as well as the UK’s Channel Islands, have already jumped on the cannabis economic development bandwagon, and this is only going to encourage the Germans as well as other similar conversations across the region. It has even showed up in France.

And of course, it is not like the implications of Luxembourg and Switzerland as well as recent efforts in Holland to better regulate the recreational industry there, have not been blatantly obvious to those in Europe’s largest medical market.

Look for new shoots and leaves, in other words of the next stage of cannabis reform to take hold auf Deutschland. And soon. It is inevitable.

The Top 4 Things Cultivation Directors Should Discuss With Their Operations Manager Right Now

By Lucas Targos
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Communication is key for efficient interaction between cultivation and business functions at any cannabis operator. So, what are the top four things cultivation directors should be discussing with their operations manager right now, as we face an uncertain Summer 2020 and unique COVID-related challenges (product demand uncertainty, reduced workforce, and immediate response to problems and issues):

  • Labor requirements
    • Operators should be discussing “Who, and what, do I need to operate this facility and how do I make operations more streamlined without diminishing quality, consistency, and yield?”
    • Efficient operations should focus on labor workflow and circulation and document a clear understanding of how employees will move through the spaces while doing their jobs.
    • Having a “less labor” philosophy and understanding—a ‘first in and first out’ mentality—drives down cost of production.
    • By limiting employees’ need to cross paths and segregating processes (e.g. harvest, distro, packaging) in a facility, you can maintain biosecurity and limit the risks of cross-contamination
    • When working with fewer staff members, everyone should be trained to:
      A greenhouse facility that urban-gro helped bring to operation.
      • Operate all necessary equipment
      • Perform keys tasks like nutrient deliver or preventative maintenance
  • Supply chain
    • What sort of products do I use to cultivate, process, distribute and how will potential shortages affect my use/cost related to these?
      • Consider products and supplies that you can order in bulk
      • Examine and update your chemical regime to focus on products that are cheaper to freight ship, and located within the US or even your state
      • Mitigate the risk of availability by using products that are have no shelf-life or expiration issues, and those where the supply chain has not yet had disruptions
  • Automation and technology
    • What’s the availability to allow for remote monitoring and controls?
      • Cultivators can take some of the load off the reduced staff by automating critical tasks
      • Remote monitoring solutions will also allow for faster notification of crop issues
      • Integrating preventative maintenance tasks like equipment schedules and maintenance can increase efficiency
  • Yield expectations
    • Ensure that conversations on yield expectations are as transparent as possible and set realistic and achievable goals
    • Build business models based on the correct numbers that take into account productions numbers on ‘high yield’ genetics versus lower-yielding plants (yield versus price)
    • Ensure you have a detailed plan that combines both plant density and production goals

7 Factors to Consider When Choosing Cannabis Software

By Ella Alpina
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These days, there are countless choices for cannabis operators when it comes to software. There are general tools like Trello, Airtable, Hubspot and Mailchimp. And then there is industry-specific software built just for cannabis operators.

The cannabis industry is fast-paced and highly regulated. So, there are certainly additional factors to consider in the search for software.

Because no two systems are exactly alike, it’s important to set up a decision-making framework in order to do a clean side by side comparison. Consider the following factors when evaluating software. Specifically, think about each one’s importance to the team and its ultimate goals.

1. Functionality

Functionality is the most important factor in the evaluation process. But, before the demos begin, take the time to identify the problems this new software should solve for the company.

Will it help you automate or optimize your processes or just offer basic features that won’t make a meaningful impact on the bottom line? (The whole point!)

2. Customer Support

For some, the level of customer support is an afterthought. The team that will use the software needs prompt, attentive support both during onboarding and after.

How does one evaluate the level of customer service a software company offers?

Questions like these will gather the info needed to make a decision:

  • How many support specialists are there vs how many total customers?
  • What’s the turnaround time for a support ticket?
  • Can I schedule one-on-one calls after the onboarding period?
  • Describe your onboarding process – how many sessions or hours do we get with your team?

Ideally, the software company takes support very seriously. Because if they don’t, here’s what happens: the team won’t use it or worse, costly mistakes will be made.

Another aspect seldom considered is the company’s industry expertise. Software vendors that stay up to date on changing regulations can provide much more value than those who don’t. Test their knowledge and see whether they would make a solid resource for you.

Software built for the cannabis industry is likely to provide this kind of support. Some industry-specific vendors, that provide cannabis cultivation software for instance, are able to answer their customers’ ongoing Metrc questions. They can become your right hand in solving compliance and, oftentimes, operational challenges.

3. Ease of Use

Always keep in mind who the end user will be. Is it someone who’s tech-driven or not at all?

The trick is to balance complexity with ease of use. If complexity is feared, there’s a risk for selecting software too simple. In this case, the value of automation and cost savings isn’t gained.

At the same time, it’s important to stay mindful of how complicated or difficult it will be for the team to adopt and use.

What does a typical day look like for employees and will the software be an approachable, useful tool for them?

4. Credibility

In a new, growing industry, there are many software vendors. How long have they been in business? Some have been around for years while others only months.

The last thing you want is for the software company to disappear off the face of the earth just when your team is on-boarded and trained. Also, beware of huge corporations that have turned their attention to the Green Rush and created a separate business unit just for cannabis. A lack of industry knowledge can be felt in the software application. If it’s being repurposed for our industry, chances are it won’t seamlessly work for our workflows.

Finally, ask what companies are currently using the software. Bonus points for recognizing any of them! It shows that established companies trust this vendor. In making the decision for which software to go with, this validation holds weight for many.  Before signing a contract and implementing the new software, make sure to read the fine print!

5. Cost vs Value

At the top of everyone’s mind is price. In these tumultuous times, we’re all worried about the bottom line.

That said, review a software company for the value it can bring to your cannabis business. How much labor time will the software save due to its automation and streamlining? Is it quantifiable?

Budgeting for a more expensive software might actually make sense if the value is there. Crunch the ROI, to the best of your abilities, to see the impact its set of features can make.

6. Enhancements

How quickly and how often does the software provider innovate its product? Ask the company for examples of how they’ve listened and addressed requests for changes or additions to their software.

Also ask what their road map looks like for the year. What new features and changes will they be making?

Without updates, software can quickly become outdated and irrelevant. A perfect solution today is not a perfect solution two years from now. Select a vendor who’s committed to regular improvements.

7. Exit Strategy

Before signing a contract and implementing the new software, make sure to read the fine print!

Some companies will try to lock in a multi-year contract. Beware of contracts that will charge for early termination if you change your mind down the road.

Get the fine print and ask for clear terms of the commitment. In a fast-paced industry like ours, priorities and needs change often. Contract lock-up is not optimal.

Scotland Moves Forward With Its First Cannabis Farm

By Marguerite Arnold
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The village of Langholm, known locally as the “Muckle Toon,” with its most famous descendent being Neil Armstrong (the first man on the moon) is about to get another first. Namely, it will be the location of the first Scottish cannabis farm.

Father and son entrepreneurs William and Neil Ewart (who also own an agricultural farm, raise Angus cattle and have a racehorse stable) have obtained permission to produce enough cannabis to create 200 liters of oils a year. The production facility is also expected to employ about 50 people – from scientists to growers and IT staff.

However, this is just the beginning. Despite being given planning permission, the Ewarts will now have to apply for a license to actually produce medical cannabis.

Reform in the UK marches on

At present, British patients are in one of the toughest situations anywhere cannabis reform has ostensibly started to happen.

Domestic production, in other words, is a vitally needed part of British reform.The UK has moved forward on cannabis reform in fits and starts – one step forward and several back, for the last several years. Late last year, a full year after the drug was approved for prescription, in an abrupt change, cannabis was denied to everyone but Epilepsy and MS patients and those suffering from nausea due to chemo treatments. NICE, the agency in the UK who sets domestic prescription policies, shamefully excluded chronic pain patients from the new guidelines. This is despite the fact that there are chronic pain patients in the UK who had received prescriptions for cannabis after the law changed in 2018. Not to mention the fact that this subset of patients represents the largest percentage of people prescribed the drug in every other jurisdiction, from Colorado to Canada.

Those who have “qualifying conditions” must now find a doctor to prescribe – still no easy task. If GW Pharmaceuticals’ products (Epidiolex and Sativex) do not work, patients must then import the drug, at great expense from overseas. Even though this importing process has gotten significantly easier in the last months, supplies are still highly expensive imports from elsewhere (mostly Holland and Canada). This runs, at minimum, about $1,000 a month.

UKflagDomestic production, in other words, is a vitally needed part of British reform. It is also seen, increasingly, as a high value crop that can be exported elsewhere. Time will tell however, if the expensive British labor market can compete with product grown in Europe (in places like Spain, Portugal and Greece).

So far, the UK has lagged behind Germany, which itself went through a torturous and expensive process to not only approve its first cultivation bid, but is also now in the process of lowering prices. The first German grown cannabis is likely to hit pharmacy shelves by the third or fourth quarter of 2020. Don’t expect any cannabis exports to the UK, at least for now however, as there is not enough domestically cultivated German product to even serve existing German patients.

An Aberdeen clinic plans to be the first Scottish private facility to prescribe
As of mid-February, the privately run Sapphire Medical Clinics announced plans to become the first Scottish private medical clinic to prescribe cannabis. The facility will require a referral from a regular GP. This has so far, not been popular with the National Health Service (NHS). Some administrators have expressed concern that the process will result in doctors using their time to funnel patients into private healthcare to receive treatments not available or recognized by the NHS.

That said, as Sapphire has pointed out, the approximately 1.4 million patients in the UK have few other options beyond the black market.

Cannabis reform, in other words, is clearly inching forward in the British Isles. One cultivation facility and prescribing clinic at a time.

The Beginner’s Guide to Integrated Pest Management

By David Perkins
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Formulating a Plan

In this article you will learn how to control pests and improve the health of your cannabis plants using integrated pest management, commonly referred to as IPM. This involves a multi-point strategy – there is no quick fix, nor is there one solution that will wipe out all your pest problems. Proper pest management requires patience, consistency and determination.

It is important to understand that not all pesticides are bad. While many are incredibly harmful not only to pests, but also humans, in this article I will educate you about some of the safer alternatives to traditional pesticides. It is possible to safely control unwanted pests in your cannabis garden without harming yourself, your employees or the natural habitat around you.

Every cultivation facility should have a well-thought-out plan for their pest management program. This program should account for the prevention, and if necessary, eradication of: spider mites, russet mites, fungus gnats, root aphids, thrips and caterpillars. These are just a few of the more common pests you’ll find in a cannabis garden. There could also be many other less commonly known bugs, so you have to be vigilant in looking closely at your plants, and the soil, at all times. Complete eradication of a targeted pest can be difficult. Once a pest has established itself, decimating or decreasing the population will require an aggressive regimen that includes spraying daily to control populations and prevent other pests from getting established.

Spraying or applying pesticides to the foliage of plants isn’t the only way to control or eradicate pest populations. There are many other ways that you can minimize the spread of pests without the use of pesticides. In greenhouse and outdoor grows, growing specific types of plants around the cultivation area will attract both beneficial and predator bugs that will naturally control pest populations. Some plants that attract these bugs are: mint, peppers, and marigold. Beneficial and predator bugs, such as ladybugs, predator wasps and predator mites, can control unwanted pest populations in the area before they even have a chance to become a problem in your garden. Plants and flowers that attract bees, birds and insects will also create helpful bio- diversity, making it more difficult for the unwanted pests to thrive.

For indoor cultivation, it is imperative that you have your cultivation facility set up for a proper workflow. If you already have pests, you need to make sure you are not contaminating the rest of your facility when going from one area to the next. Make sure that you only go to contaminated areas at the very end of your day, and when you’re done working in that area, you must immediately exit the building. Do not ever walk back through the uncontaminated parts of your facility or the pests will spread quickly.

An aphid on a plant in a greenhouse

When most people think of pests in their cannabis garden they think of the more common varieties: spider mites, russet mites, aphids and thrips. However, there are also soil-dwelling pests that can exist, without your knowledge. These will decrease the health and vigor of your plants, without you even knowing they’re there, if you’re not careful to check for them. Some of the soil dwelling pests that plague cannabis plants are: root aphids, fungus gnat larvae and grubs. It is just as important to control the pests below the soil, feeding on your roots, as it is to control the pests that feed above soil on your plants.

Maintaining healthy plants is essential to controlling pest populations, both on the foliage and below the soil. Healthy plants will have an easier time fighting off pests than unhealthy plants. Plants have immune systems just like humans, and the stronger the plant’s immune system, the more likely it will be able to ward off pests and diseases. Allowing a plant to reach its full potential, by minimizing pests, means your plants will also have a better quality, smell and flavor, not to mention a bigger yield.

Worker Safety, Regulation and REI times

The application of pesticides requires certification from the state agricultural department. In certain situations, depending on the type of pesticide and method of application, a license may even be required. The application of pesticides without proper certification is against the law. Applying pesticides in a manner that is not in accordance with the label and instructions is also a violation of law.

The proper personal protective equipment (PPE) is required for anybody handling, mixing or applying pesticides. Employees can be a liability to your company if they are applying pesticides improperly. Make sure you and your entire staff are well educated about pesticide use requirements and limitations, prior to usage, and that only a properly certified person is handling the mixing and application at your facility.

The author, David Perkins, In his greenhouse after using insect killing soap.

After a pesticide is applied, you must abide by the re-entry interval (REI). This is the required time period limiting all workers from re-entry into areas where pesticides have been applied. This time period will vary depending on the type of pesticide used and the method of application. In some instances, pesticides applied in the last 30 days may require employee training before work can be done in those areas.

The misuse of or improper handling of pesticides is not only unlawful and dangerous to human health, but can also cause environmental damage to waterways and wildlife. The direct effects of pesticides on wildlife include acute poisoning, immunotoxicity, endocrine disruption, reproductive failure, altered morphology and growth rates and changes in behavior. Pesticides can indirectly impact wildlife through reduction of food resources and refuses, starvation due to decreased prey availability, hypothermia and secondary poisoning. Section 1602 of the California Fish and Game Code governs requirements for permitting of any project where pesticides will be used, and strictly regulates the disposal of all waste and run-off. It is imperative to know the regulations and to abide by them, or heavy fines will ensue!

Using Pesticides in a Regulated Market

Knowing which pesticides you can’t use, to avoid failing mandatory state testing, is just as important as knowing which ones you can use safely to pass required testing. Most states with regulated markets have strict limitations on the pesticides that can be used in cannabis cultivation. Pesticide use in the cultivation of cannabis is the most strictly regulated in the agriculture industry; the pesticides allowed for use in cannabis cultivation are far more limited than any other crop.

Photo: Michelle Tribe, Flickr

Just because a product is certified organic does not mean that it can be used, or that it is safe to be consumed or ingested. Oftentimes when cannabis flower alone is tested it will not fail or show a detectable amount of pesticides or heavy metals. However, when that flower is turned into concentrates, banned substances are then detected in testing, leading to test failures.

Cannabis cultivation facilities that are located on land that was previously used for conventional agriculture, or located near vineyards or other agricultural crops that are heavily sprayed with harmful pesticides, run a very high-risk failing testing. This is because of either spray drift from nearby agriculture, or residual pesticides and heavy metals left in the soil from previous crops that were using pesticides banned for cannabis cultivation. Accordingly, if you’re going to be growing outdoors or in a greenhouse, it is imperative that you get a soil and water test prior to cultivation, so you can determine if there is any potential for test failures due to pesticides or heavy metals in the soil or water in that area. 

Proper Application – Using the Right Tools in the Right Way at the Right Time

One of the most important factors in pest management is proper identification of pests and proper application and coverage of pesticides. It does not require an entomology degree to identify insects, these days there is a lot of information online that can help you identify cannabis pests. Proper identification of insects can make the difference between success and failure. With a good eye and a microscope, if you do your research, you can control most insects in your garden.

In order to control pests in your garden you must get proper coverage of the foliage of the plant when you are applying pesticides. There are different types of equipment that are commonly used to apply pesticides in cannabis cultivation: backpack sprayers, foggers, and airless paint sprayers are the most common. An alternative method involves using an automated dosing system such as a dosatron, which injects fertilizer or pesticides at a specific ratio into your water lines, allowing you to use only the exact amount of pesticide you need. That way you avoid wasting money on unused pesticides. It is also safer for employees because it minimizes employee exposure, since there is no mixing required, and it allows for a large volume to be sprayed, without refilling a tank or a backpack sprayer.

No matter what you are using you must ensure you get the proper coverage on your plants in order to control pests. The temperature and humidity of your cultivation area, as well as the PH and temperature of the pesticide solution, all factor into the success of your IPM. For example, PFR 97 needs to be applied at a higher humidity range, around 70% to be most effective. In some areas this is not possible so repeated applications may be required to ensure the application is effective. A high PH or alkaline PH can cause alkaline hydrolysis which will make your pesticide solution less effective and will dictate how long your pesticides remain effective after they are mixed. It is therefore important to use your pesticide solution as soon as you make it; don’t let it sit around for long periods of time before use or it will be less effective.

In cannabis cultivation there are two different primary growth cycles: vegetative and flower. These cycles require different IPM strategies. In general, during the flowering cycle, pesticides should not be applied after the second week, with some limited exceptions i.e. for outdoor cultivation there is a longer window to spray since the flower set takes longer than a plant being grown inside, or in a light deprivation greenhouse, where there is a 12/12 flowering cycle.

Starting with an immaculate vegetation room is crucial to maintaining pest and mold free plants in the flowering cycle.

For the vegetative (non-flowering) cycle, a strict rotation of foliage spray applications targeting not only pests, but also molds and pathogens, will be necessary to avoid a quick onset of infestation. Starting with an immaculate vegetation room is crucial to maintaining pest and mold free plants in the flowering cycle. Preventative sprays that are safe for use include: safer soap (contact kill) for soft bodied chewing insects; Regalia (biological control) for powdery mildew; and PFR 97 (biological control) for soft bodied chewing insects. It is also helpful to spray kelp, which strengthens the cell walls of plants, making the plant healthier, and thus enabling the plant to better defend itself from pests and diseases. Also, Bacillus thuringiensis (Bt) is useful to prevent or kill caterpillars.

The best way to control a pest infestation in the flowering cycle is at the very beginning on day one. You must start aggressively, with a three-way control consisting of a contact kill and preventative during days 1-14; preventative and biological control during days 10-18; and then release predator bugs on day 25, for optimal results. Knocking back the population with an effective contact kill pesticide early on is essential to ultimately lowering populations throughout the grow cycle, so that you can spray a biological control to preclude them from returning, before you release the predatory bugs at the end of the cycle.

Biological controls can take anywhere from 3 to 10 days before they are effective. Biological pesticides are selected strains of bacteria or fungus. When the plant tissue is eaten by a targeted pest, the bacteria kills the pest from the inside providing control without having to spray pesticides repeatedly. Predator bugs are the last line of defense, used in late flowering. They can be used indoors, outdoors and in greenhouses. An example of a common predator bug is Amblyseius californicus used to control low populations of spider mites, but there are many different varieties and they are specific depending on the type of pest population you seek to control.

A common concern with the use of predatory bugs, is whether they will be present when the flowers are harvested. However, if there is no food for the bugs (i.e. pests) the predator bugs will leave in search of food elsewhere. Further, indoor predator bugs are usually very small in size and difficult to see to an untrained eye. It is very unlikely to see any signs of predator bugs near the end of the flowering cycle, or in the finished flower product. Even when using bigger predator bugs, the bugs will leave the plants when harvested and dried.

Having pests can be very stressful. It is not uncommon to have bugs, pests, rodents, animals and birds cause damage in cannabis gardens. Making an informed decision based on science and not on unproven assumptions can determine how successful you are at pest management. There are many factors that go into pest management and no one situation is the same. You must be dedicated and consistent; pest management never stops. You will always have something ready to invade your garden. Prepare, plan, prevent and repeat!

5 Factors to Keep in Mind When Entering the Regulated Market

By David Perkins
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It’s a different world growing cannabis in California- in fact, it’s a completely different experience than it was even four years ago. It can be overwhelming to begin the process, which is where an experienced cultivation consultant can help. This article will highlight 5 factors to keep in mind before you begin growing in California’s regulated recreational market.

Start Up – Costs, needs & endless variables

So you’ve decided to begin a recreational grow, here are the factors to consider before you get started.

Permitting, the necessary pre-cursor to cultivation, can be time- consuming, extremely expensive, and overwhelming. General experience dictates that any grow will take longer than planned and cost way more money than you ever expected or anticipated. Always account for more money and time than you think you need. Working with an experienced consultant can help you plan and account for all the costs and variables you may not have considered, prior to beginning cultivation, in order to ensure your success.

Understand that growing boutique style cannabis is very difficult on a large scale, consistently.

Equipment. When choosing what equipment to use, stick to reputable equipment manufacturers. Don’t just go with the latest high-tech gear because you see it on Instagram being advertised by a big, fancy grow operation. Stick to what you know best. Do your homework and research the equipment as much as possible, prior to purchase. Use equipment that has been tested and well documented with success. Some questions to ask yourself: is this necessary? Is it cost effective? Will it help me reach my goals?

Grow your business slowly and naturally. Getting too big too quick will most likely expose inefficiencies in your operating plan, which will be further compounded when production increases. Don’t sink before you can swim and start out on a massive scale before you have perfected your process.

Cultivation – It pays to design it right the first time

Success begins in the grow room. Never forget that. A properly engineered cultivation plan can be the difference between 3 and 6 harvests per year. Again, it is imperative here to do your homework. A well-thought-out plan can make or break you, and that is where an experienced cultivation consultant can help.

Set realistic expectations. Understand that growing boutique style cannabis is very difficult on a large scale, consistently. Don’t expect to grow perfect cannabis every time – it is unrealistic and can ultimately lead to failure if your financial model depends on it. Growing a plant, while mostly in your control, involves too many variables to rely on a perfect outcome round after round. You can do everything in your power, yet something unexpected can still happen and be detrimental to your yield, and therefore your profit. You must expect and plan for this.

Automating as much of your grow as possible is always a good idea. This will greatly reduce labor costs and more importantly, minimize human error. In some instances, it will even allow you to review data and information remotely, in real time, allowing you to ensure your cultivation site is always running as efficiently as possible, even when you aren’t there.

Processing – Don’t skimp on the process

If you are going to be harvesting cannabis for flower, it is imperative to have a properly built facility for drying, curing and storing your product. You must consider that this building will need to be large enough to house and properly store all of your harvest at once. This can make or break your crop at harvest time. If you don’t have the capacity to handle your harvest properly, it can lead to disastrous issues such as mold or too quick of a cure – conditions which make your cannabis unsellable in the regulated market.

dry cannabis plants
Rows of cannabis plants drying and curing following harvest

Although costly, if done correctly, you can also design this area to serve as your propagation, trimming, and breeding areas, which will ultimately save on costs in the long run.

Also keep in mind, hand trimmed cannabis will always look more appealing to the consumer than machine trimmed cannabis. However, hand trimming can be time-consuming, labor-intensive, and therefore far more costly than machine trimming. These are factors you will need to consider and budget for when deciding how to proceed. If you use a machine, you may save money up front, but will you be able to sell your cannabis at full price?

Distribution – Have a plan

It is a good idea to have a plan for distribution, prior to start up. If you have an agreement with a retail outlet (or contract with a distributor) in writing, you will protect yourself from financial failure. Cannabis will never grow more valuable over time, therefore, you want to have a plan in place for distribution, as soon as the cannabis is harvested and processed. Just as was the case in the black-market days, you never want to hold on to your cannabis for long periods of time.

Do not distribute without agreements in writing! While some oral agreements may be enforceable, it will be extremely costly to litigate. Therefore, you should plan to hire a lawyer beforehand to create fail-proof agreements that will hold up in court, should a distributor not pay you for your product.

Sales – Build your brand, but be realistic

Building your brand is important. And if you don’t produce your own high-quality flower you cannot expect to have a product up to your standards. Your brand will not be successful if you cannot consistently provide consumers with high quality cannabis. Relying on other growers to produce your cannabis for you is risky to your brand. Even if you are a manufacturer, you may not be able to rely on other suppliers to maintain the quality volume you need in order to manufacture your products consistently.

The regulated market in California is new. Therefore you must necessarily account for a great degree of price fluctuations in the market. When creating your budget at the outset, you must account for fluctuations in profit. Knowing when prices are going to be at their lowest can help you avoid having an oversupply of inventory. It can also help you avoid such situations by planning your cultivation/harvest accordingly.

There are both consumer and government influenced market trends that can affect your bottom line. These must be accounted for at the outset.

On the consumer level, you must know what people are buying and how they are consuming. And these factors can change quickly with the introduction of new technology, methods or new devices intended for cannabis consumption. You must stay on top of these trends.

The government regulations can also affect these trends. Products used for cultivation can become banned, i.e. products you once relied on in your cultivation can be found to have contaminants known to cause test failures, even in “approved products.”

Ultimately, all of these factors can make or break your success, and therefore, must be considered, researched and accounted for prior to beginning your cultivation in the regulated market. Working with a consultant with over 20 years of grow experience, and more importantly, extensive experience in large scale cultivation in the regulated market, can help you achieve the success you desire. Cultivation in the regulated market is costly, but working with a consultant can help you cut costs at the outset, and save you from unexpected expenses in the long run.

Thinking of Hiring a Cultivation Consultant? Here’s What You Can Expect

By David Perkins
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Hiring an experienced cultivation consultant is yet another cost, amongst the laundry list of never-ending expenses in the setup of a regulated, recreational grow. However, in the big picture it can actually save you a significant amount of time and money by providing you with the information you need to formulate a realistic budget, profitable cultivation site and a well-trained workforce. This article will explore just some of the many benefits a cultivation consultant can provide to your company.

An experienced consultant will have a vast array of knowledge to ensure the success of your company. One important area they can advise you on is budgeting. With years of experience cultivating, in both medical and recreational markets, an experienced consultant will have knowledge of not only start-up costs, but also hidden costs you must prepare for in advance. They will also be able to advise you on strategies to avoid future costs and problems. There may also be expenses in the build-out of your cultivation site you have not considered. For example, you may need a waste water treatment plan if you have any fertilizer run off that will flow to a sewage drain. It is important to know all possible costs when securing your investment or planning out your budget for the year.

Setting up a large-scale cultivation site in a regulated market can be extremely costly. Gone are the days of putting up a few lights in a closet; growing in a regulated market requires a larger scale, and therefore, larger costs and more complications. A consultant experienced in design and implementation of such large-scale, intricate cultivation plans will provide you with the knowledge you need to properly set-up and maintain your facility in order to ensure your company’s success. They will also know the tips and tricks to save you money along the way.

Something as simple as a centralized irrigation distribution zone can save you a lot of time and money.

A good consultant will be able to advise you on the design of your facility to ensure that the layout supports productivity, and that there is a proper workflow. It is important to hire a consultant before you get started with the build out of your facility, as it will be much more costly to have to correct mistakes in your design later on down the road. An experienced consultant will implement superior facilities layout and design to avoid future problems at the outset. Something as simple as a centralized irrigation distribution zone can save you a lot of time and money.

Once you have created the proper space, cultivation planning is important to avoid unnecessary problems from arising, which will ultimately delay profit. A well thought out cultivation plan will help you plan for success. A consultant will know what does and doesn’t work. For example, some equipment will run off an app on your phone; while convenient, there are some that don’t perform well which could end up costing the entire crop. These are things you want to know and work around, before you spend money unnecessarily.

An experienced consultant will have previously worked in various types and scales of cultivation sites, and from that experience will be able to teach you which processes and techniques work, and which ones don’t. Someone with less experience may believe that watering plants by hand would be an easy method to keep your garden irrigated, but it is actually the most time-consuming labor task (and therefore extremely costly), while an automated watering system can be very simple and cost-effective to install.

Some equipment will run off an app on your phone; while convenient, there are some that don’t perform well which could end up costing the entire crop

A skilled consultant can provide necessary training for your employees. Let’s face it, this is an entirely new industry, and therefore, most people applying for entry-level jobs at a cultivation site are unskilled. However, the best path to success when dealing with large-scale cannabis cultivation is to have skilled, happy employees. Educating and properly training your employees is essential. It helps to teach employees not only how to complete a task, but to help them understand why they are doing a given task. This will give your staff the skills and confidence they need to complete the task properly. Unskilled hands in your garden can jeopardize the success of your cultivation.

Don’t make the same mistakes others have made. Hiring a cultivation consultant can help you to avoiding problems before they occur. A professional consultant has the knowledge required to predict issues and problems before they occur, or implement a solution when corrective measures are necessary. Oftentimes issues can be avoided just by knowing the cause and effect of decisions and the potential outcomes they will have.

A cultivation consultant should also have a wide network of professional contacts to help you address any issues or problems that arise. Having a network of professionals to employ when necessary is critical for ensuring the success of every project. For example, wholesale contacts for cultivation equipment can help you not only to get the best price, but also ensure you are using the best equipment possible for your situation.

If you are still unsure about whether or not you need a cultivation consultant to help plan out your grow, or fix your grow if you’ve encountered problems, feel free to contact me to discuss your needs. I assure you there are ways I can save you money, improve your yields, and help your company be more successful in this ever-changing market.

Large Scale Cultivation Planning: 4 Important Factors to Consider

By David Perkins
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Before you begin any large-scale cultivation project, you must necessarily consider the four factors highlighted below, among many others, to ensure your cultivation is successful. Failure to do so will cost you greatly in both time and money, and ultimately could lead to failure. While the four areas highlighted below may be the most important considerations to address, you should hire a cultivation advisor to determine the numerous other considerations you must deal with before you begin.

1. Genetics

Genetics will play a huge role in your cultivation plan, as they can ultimately make or break the success of your business. Access to quality, verified genetics will greatly affect your profits. All cannabis genetics grow differently and may require different conditions and nutrients. Further, consumers in today’s regulated market have greater awareness; they are much more knowledgeable about genetics and able to discern between quality cannabis versus commercially produced cannabis.

Market trends will dictate whether or not you’ll ultimately be able to sell your harvest at market rate. You need to project out at least one year in advance the genetics you will be growing. But often it is impossible to predict what consumers will be purchasing a year in advance so this part of your cultivation plan should be well thought out. Further compounding this difficulty is the fact that it may take six months to ramp up production of any given variety.

Genetics that are popular now may still be popular next year, but that also means there will be more competition for shelf space, as more competitors will also likely be growing these same genetics. Therefore, don’t rely on only one trendy variety as the bulk of your selection for the year, no matter how popular it is at the moment. Producing a single variety as the bulk of your crop is always risky, unless you have a contract with a sales outlet, in advance, for a set quantity of that one particular variety. Diversity in your genetics is beneficial, when chosen correctly.

Making proprietary genetics from your own seed collection can give you a big advantage in today’s competitive market. Having a variety with a distinct, unique and desirable smell, taste, effect or cannabinoid profile will allow you to distinguish your brand amongst others. Entire brands have been built off of a single variety: Cookies and Lemontree are two examples of companies that have done this. All it takes is one really good variety to attract a lot of attention to your brand. Having your own breeding project on site will allow you to look for and identify varieties that work for you and your business model, and ultimately will help to distinguish your brand apart from others.

Only buy seeds from reputable breeders! Any new varieties that you are going to be cultivating should be tested out at least three times, on a small scale, before being moved into a full production model. If you are growing from seed there is always the potential for your crop to get pollinated by male plants or hermaphrodites that went unnoticed, and therefore, they could be a potential risk to your entire harvest. Treat them accordingly, i.e. by cultivating them on a small scale in a separate, enclosed area.

Buying clones from a commercial nursery can be risky. Genetics are passed from one grower to another haphazardly, and names are changed far too easily. This can create a lot of confusion as to what variety you are actually purchasing and whether you are getting the best version of the genetics. Just because a clone is called “sour diesel” doesn’t mean you’re actually getting the real, authentic sour diesel. And to further complicate things, the same clone grown in different environments can produce a noticeable difference in flavor, smell and effect depending on your cultivation method. Always try your best to verify the authenticity of the genetics you purchase. Ask about the history and origin of the particular genetics you are purchasing. Better yet, ask for pictures, physical samples, and most importantly, certificates of analysis from a laboratory, indicating the potency. In many states anything under 20% THC is going to be hard to sell, while anything over 30% will easily sell and command the highest price. It’s a good idea to have a laboratory test the terpene profile in order to verify a variety is actually what the seller purports it to be.

Knowing the source of your genetics is imperative. It will help ensure that you actually have the variety that you were intending to grow, and therefore, allow you to achieve your intended results. Knowing what varieties you are going to cultivate, before you grow them, will also give you a better idea of the ideal growing conditions for that specific variety, as well as what nutrients will be required to achieve optimum output.

2. Automated Watering Systems

Installing an automated watering system, during build out, will by far be the most cost-effective use of your money, and will save you the most amount of time in labor. An automated watering system, commonly referred to as a “drip system” or “drip irrigation,” is necessary regardless of whether you are cultivating indoors or outdoors; it will allow you to water multiple different areas at once, or only water a few specific areas of the garden at one time. Hand watering a 22,000 square-foot cultivation site will take one person eight hours every single day, on average, to maintain. However, a properly designed drip system can water an entire large-scale garden in a couple of hours, without any employees, record all the relevant data and notify you if there is a problem. This enables you more time to spend closely inspecting the plants to ensure there are no bugs or other problems present, and that your plants are healthy and thriving. This attention to detail is necessary if you want to have consistent success.

Larger scale cultivation requires bigger and more expensive equipment.

Automated watering systems not only save a great deal of time but also eliminate the possibility of human error, like over watering, which can kill an entire crop quickly. There aresoil moisture sensors  that can be placed in the soil to regulate the supply of water to the plants in a precise manner. Without an extremely skilled, experienced work force, damage to plants due to over watering is very common. A drip system will reduce the threat of human error by ensuring delivery of precisely the correct amount of water and nutrients to each plant every single time they are watered.

Not all drip systems are created equally. There are different types of automated watering systems. Designing the right drip system for your cultivation site(s) can be complicated. Make sure you do your research, or better yet, work with a cultivation advisor who has experience with automated irrigation systems in conjunction with a licensed plumber, to ensure you are installing the best system for your particular set up.

Adding a fertilizer injector to your drip system can further increase the efficiency of your operation and save you money on nutrients by using only what you need and ensuring correct application. Again, automating this process will save you time and money, and reduce the threat of human error.

3. Nutrients

The types of nutrients you use and the amount of nutrients you use, are going to directly affect the quality of your cannabis flower. Conventional agriculture and Dutch hydroponic cannabis cultivation have always used salt-based fertilizers. However, they can be toxic for the plant in high amounts. While cheap and easy to use, salt- based nutrients are made in big factories using chemical processes to manufacture. They are not good for the environment, and overall, they produce an inferior product. The highest quality cannabis, is grown with organic living soil. Although seemingly contrary to popular knowledge, when done properly, cultivating in organic living soil is more cost effective than using powdered or liquid salt-based fertilizers.

Yield and quality depend on the skills of the cultivator, more than the method they are using. Having healthy plants from the start, will always yield better results, no matter what way they were grown. In my 20 years of experience I have seen plants grown in balanced living soil yield just as much as plants grown with synthetic nutrients. Further, the quality is not comparable.

Controlling your clone supply can ensure they are healthy

Always remember, it is the quality of your flower that will determine the price it is sold for, not the yield. Even if you produce more overall weight of chemically grown cannabis, if nobody wants to purchase that product, then you are going to yield far less profit than another company growing in the same amount of space using organic practices that yield a higher quality product.

The difference in quality between plants grown in balanced living soil versus any other method of cultivation is undeniable. It is really easy to post a pretty picture of a flower on Instagram but that picture doesn’t tell you anything about what went into producing it. When flower is produced using chemical nutrients, it is likely going to be harsh and not enjoyable to smoke. Lesson learned: don’t judge a bud by an Instagram photo! There is a stark difference between cannabis grown using synthetic nutrients versus cannabis grown in living soil. Once you’ve experienced the difference you will never want to consume cannabis that is grown any other way.

4. Plant Propagation

Having the ability to propagate your own clones, from mother plants that you have cultivated, can save you a staggering amount of money. In some states, having a cultivation license allows you to produce your own clones for your cultivation, while having a nursery permit will allow you to sell clones for commercial sales to other companies. The average price of a wholesale clone is around eight dollars. If you require 5000 plants for every harvest, that’s a $40,000 expense you must bear, every grow cycle. This can obviously add up quickly. And as previously mentioned there’s the risk of purchasing inferior genetics or unhealthy plants, both of which greatly affect your profit margins.

On the other hand, the cost of materials and labor to produce a healthy clone can be as low as one dollar when using advanced cloning techniques. Controlling your clone supply can ensure they are healthy and allow you to know exactly what you are growing each time. Further, it doesn’t take a lot of space to propagate your own cuttings. In a 400 square-foot space one could produce between 5,000 to 10,000 clones per month, all of which could be maintained by one person depending on your situation.

And last but definitely not least, the most important thing you can do to ensure the success of your cultivation, is hire an experienced knowledgeable grower who is passionate about cannabis. The success of your company depends on it. You need someone with the knowledge, experience, and skills to make your cultivation dreams a reality. You need someone who can plan your build-out and cultivation to ensure success from the start. And you need someone with the skills to handle the multitude of inevitable problems that will arise in a cost effective and efficient way.

These are just some of the many considerations you must account for when planning a large scale grow in the regulated market. An experienced cultivation advisor can help you with these, and many other considerations you will need to contend with before you begin your grow. Creating a well thought out plan at the outset can end up saving you thousands, if not hundreds of thousands of dollars down the road.

Top 3 Ways Cultivation Methods Must Change with Regulations

By David Perkins
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There are obvious upsides and downsides to cannabis regulation. Gone are the days when it was a free for all, for outlaws growing in California’s hills, under the limited protections California’s medical cannabis laws provided. While there is no longer the threat of arrest and incarceration, for the most part, there are also a lot of hoops to jump through, and new rules and standards to contend with. This article highlights three areas in which your cultivation plan must necessarily change due to the new regulations.

1. Integrated Pest Management (IPM) is limited

In the new regulated market, products that were once widely used are now no longer allowed. Prior to regulation, in the days of Prop 215, you could spray your plants with just about anything, since there was no testing mandated for the products that were being sold. However, people unfortunately got sick and experienced negative reactions, with products like Eagle 20, which contains mycobutinol, and Avid, which contains bifenthrin. Accordingly, under new regulations there are thankfully much more stringent standards dictating what pesticides can be used. It’s ironic that for most of the “medical marijuana” era in California there were no mandatory testing requirements for the THC content of your cannabis, let alone testing for toxins, including pesticides, molds or heavy metals.

You need to have a very thorough pest management plan to make sure your bug populations are always in check. Given that there are a small number of allowable products for pest control in the regulated market, this can be tricky. You need to be extremely familiar with what is and isn’t allowed in today’s regulations. You must also make sure that someone who is certified to apply pesticides is applying them.

Photo: Michelle Tribe, Flickr

As a word of caution, there have been instances where approved pesticides were found to have old unused chemicals (that are not approved for use) from the manufacturing process in them. They may have only occurred in very small amounts, but they are harmful to humans and there is no lawful way to dispose of them.

Further, the presence of these harmful chemicals can cause your finished product to fail when undergoing mandated testing.

Rather than using risky chemicals, the best solution for (early detected) control of pests is the use of beneficial insects. Although they may not be the best solution for an infestation, predator bugs like Neoseiulus Californicus can efficiently control small populations of spider mites while ladybugs are good to limit aphids. Strategic planning of your IPM is one of the best ways to keep pest levels in check.

2. Plant size and plant count matter more than ever

Despite widespread legalization in the past few years for both the medical and recreational markets in the United States, the black market is still rampant and most cannabis is still being produced illegally in the US and internationally.

Maximizing plant canopy space is essential to a profitable business in today’s market

Generally speaking, in the black market, the less plants you have the better, as high plant counts lead to longer sentences of incarceration. With the passage of prop 215 in 1996, many growers, especially outdoor, started growing their plants as big as they possibly could because most limitations were based on plant counts. Some outdoor growers were able to cultivate plants that yielded over 10 pounds per plant. These days regulations are based on canopy measurements, meaning you can grow as many plants as you want within a defined, limited square footage area. This is where “light deprivation,” a method used to force plants into flowering, becomes favorable as it allows 2-4 harvests per year instead of just one. It is a much more intensive way of growing when you have tens of thousands of plants. While it is easier to plant, cultivate and harvest a larger number of smaller plants, it also requires a much more detailed level of planning and organization.

In order to achieve 4 harvests per year, you must have a well thought out cultivation plan and an all-star staff, but if you are able to accomplish this, you can increase your revenue significantly. Maximizing plant canopy space is essential to a profitable business in today’s market, and to do that will require more detailed planning, better organization and proper crop management.

3. How you grow and what equipment you use

With regulation comes liability for defects or injury. It is essential that all equipment used is approved for its intended use. Traditionally, cannabis was cultivated in secrecy in the black market. This led to many unsafe grow rooms being built by people who did not have the proper skills to be undertaking projects such as converting a garage into a grow room or handling the electrical and plumbing running into them. Accordingly, there were many instances of damages to property or injuries to people because of this. Now that counties and states permit cannabis cultivation facilities, the infrastructure and labor that is done must meet regulated building codes and general safety requirements. It is therefore imperative to know the codes and regulations and hire a professional that does, to ensure you meet the standards in order to avoid potential liability.

Larger scale cultivation requires bigger and more expensive equipment. Cultivation facilities are more likely to have sophisticated equipment, such as chiller systems, that are designed to control the grow room environment. While very efficient, some are not intended to be used specifically for cannabis cultivation, and can therefore be difficult to control and maintain. They perform very specific functions, and when not properly tuned to your conditions, can malfunction by prioritizing dehumidification over cooling. This can be a real challenge in warmer climates when temperatures rise, requiring cooling, but also necessitate removal of moisture from the cultivation space.

Larger scale cultivation requires bigger and more expensive equipment.

On the other hand, there is new technology that can make a huge difference in the success of your cultivation. I recently worked with two different companies that specialize in root zone heating systems. One manufactured equipment for root zone heating and cooling of 10k sq ft raised beds that had never been used in California previously. The other company specialized in root zone heating using radiant floor heat. They both worked as intended to maintain a constant root zone temperature, which increased plant health, and ultimately increased yield.

Many counties require data collection from your cultivation, requiring you to track the amount of water and nutrients used. Therefore, another useful tool you can use to increase efficiency, is data collection software that will allow you to collect different information about the amount of water and nutrients used, as well as specific information about the conditions in your grow medium. You can also record and display temperature and humidity readings in your grow room, in real time remotely through Wi-Fi, that you can then access from your phone or computer from anywhere in the world. This can be a useful tool when documenting information that your county, state or investors may require from you. Further, the ability to collect and analyze data will allow you to identify areas of inefficiency in order to correct and optimize your grow room’s potential. While you can achieve these same goals with simple in-line water meters, keeping track of nutrients and pesticides is not as easy. Data collection in the most basic form, using a pen and paper, can be an inaccurate and an inefficient use of time, and can easily be misplaced or ruined. Therefore, simple data software collection programs are the best solution to make the process simple and hassle free.

While it is nice to have state of the art equipment, if it does not work properly, or cannot be easily maintained, it will not be worth it in the long run and you will never see a return on your investment. Innovation comes with a price; using equipment that is cutting edge can be risky, but on the flip side, when done properly it can give you a big advantage over your competitors.

In switching from the black market to the regulated market, these three areas have proven to be the biggest areas of change and have presented the biggest challenges. It is important you consider these necessary changes, and make a solid plan before you begin your cultivation. This is where a cultivation consultant can help.

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Optimizing Your LED Spectrum for Leaf Surface Temperature

By Andrew Myers
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Every detail counts at an indoor grow facility. Indoor growers have complete control over nearly every aspect of their crop, ranging from light intensity to air circulation. Among the most important factors to regulate is temperature. While ambient air temperature is critical, growers will also want to measure leaf surface temperature (LST).

To illustrate, let’s say you keep your living room at a cozy 76 degrees. Then, if you place a thermometer under your tongue – your body is (hopefully) not at 76 degrees but is likely between a healthy temperature of 97 to 99 degrees.

A similar story can be told for cannabis plants grown indoors. A grow facility’s ambient air is often different than the plants’ LST. Finding an ideal LST for plant growth can be complex, but modern technology, including spectrally tunable LED grow lights, can simplify monitoring and maintaining this critical aspect.

Why Should Growers Care About LST?

Temperature plays a pivotal role in plant health. Many biochemical reactions contributing to growth and survival only occur within an ideal temperature range. If temperatures dip or spike dramatically, growers may witness inhibited growth, plant stress or irreversible damage to their crops.

The leaf is among the most important plant structures as it’s where most metabolic processes happen. Therefore, finding an optimum LST can improve growth rate and the production of metabolites such as pigments, terpenes, resins and vitamins.

Because many plants rely on their leaves for survival, it makes sense that leaves have their own temperature regulation system. Evaporation through pores in the leaf – known as stomata – can cool the plant through a process called transpiration. Up to 90% of water absorbed is used for transpiration, while 10% is used for growth.

The efficacy of transpiration is determined by the vapor pressure deficit (VPD), which refers to the relative humidity in the ambient air compared to the relative humidity in the leaf. If relative humidity is low, the VPD can be too high, which may cause plants to have withered, leathery leaves and stunted growth. On the other hand, a low VPD correlates to high relative humidity, and can quickly result in disease and mineral deficiencies. Higher humidity often results in a higher LST as transpiration may not be as effective.

When it comes to LST, growers should follow these basic guidelines:

  • Most cannabis plants’ LST should fall between 72 and 86 degrees – generally warmer than the ambient air.
  • LST varies depending on individual cultivar. For example, plants that have evolved in colder climates can generally tolerate cooler temperatures. The same can be said for those evolved in equatorial or temperate climates.
  • CO2 availability also plays a role in LST; CO2 generally raises the target temperature for photosynthesis.

How Does Light Spectrum Affect LST?

We know that CO2 concentration, specific genetic markers and ambient temperature all play an important role in moderating LST. But another important factor at an indoor grow is light spectrum – especially for those using spectrally tunable LEDs. Growers will want to optimize their light spectrum to provide their crop with ideal conditions.

A combination of red and blue wavelengths is shown to have the greatest impact on photosynthesis and, thus, LST. Photons found along the green and yellow wavelengths may not be absorbed as efficiently and instead create heat.

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Indoor cultivator facilities often use high powered lights that can give off heat

Optimized light spectrums – those with an appropriate balance between red and blue light – create more chemical energy instead of heat, thereby resulting in a lower LST. Using fixtures that are not spectrally tuned for plant growth, on the other hand, can waste energy and ultimately contribute to a higher LST and ambient temperature, negatively affecting plant growth. Consequently, measuring LST doesn’t only indicate ideal growing conditions but also indirectly illustrates the efficiency of your grow lights.

LED fixtures already run at a lower temperature than other lighting technologies, so indoor growers may need to raise the ambient temperature at their grow facilities to maintain ideal LST. Switching to spectrally tuned LEDs may help growers cut down on cooling and dehumidifying costs, while simultaneously improving crop health and productivity.

What’s the Best Way to Measure LST?

There are several tools available for growers to measure LST, ranging from advanced probes to specialty cameras. However, many of these tools provide a reading at a specific point, rather than the whole leaf, leading to some inaccuracies. Temperature can dramatically vary across the leaf, depending if parts are fully exposed to the light or in the shadows.

Investing in a forward-looking infrared camera (FLIR) gives indoor growers a more accurate picture of LST and light efficiency. That being said, growers should not only measure leaves at the top of the plant, but across the middle and bottom of the plant as well. That way, growers receive a complete snapshot of growing conditions and can make changes as needed.

At an indoor grow facility, it’s not enough to only measure ambient room temperature. Of course, this aspect is important, but it will paint an incomplete picture of plant health. Measuring LST gives growers nuanced insights as to how plants respond to their environment and how they can better encourage resilient, healthy growth.

Using spectrally tunable LEDs makes achieving LST easier and more cost-effective. Lights with optimized spectrums for plant growth ensure no energy is wasted – resulting in superior performance and efficiency.