Tag Archives: irrigation

June 15, 2023

Building An Integrated Pest Management Plan – Part 4

By Phil Gibson

This is the fourth in a series of articles designed to introduce an integrated pest management framework for cannabis cultivation facilities. To see Part One, an overview of the plan and pest identification, click here. For Part Two, on pest monitoring and record keeping, click here. For Part Three, on preventative measures, click here. Part Five comes out next week on how to build a framework for control actions and how to monitor them. More to come!

This is Part 4: Direct Control Options

Even when the best methods are implemented and precautions are taken to protect your infrastructure, determined pests can penetrate your perimeter. Before you see crawling, hopping or flying insects, or sickly-looking plants, be sure to implement your physical protection (positive pressure airflow sealed facilities) and personal hygiene methods (shoe baths, sticky mats, & air shower entrances) to protect your crops. Equip your employees with personal protection equipment (PPE) proper gloves, masks and clothing as discussed in our last chapter, preventative measures.

When things do break-out beyond your acceptable thresholds, Direct Control Options include non-chemical microbial biofungicides, microbial bioinsecticides and direct chemical control options. Lots of big scary words there, all of which are toxic even under safe application methods and when used at recommended concentrations levels. This means training in their use and protective clothing is required. Careful application of these control options is necessary so you exterminate your pests and not your people! This seems obvious, but do not just “wing it.”

These chemical elements can be applied in diluted concentration levels, manual wipe-down application, concentrated flush frequencies, or root drench applications, foliar spray mist applications, HVAC aerial diffusions and aerial knock-down sprays. You may even choose to remove badly infected plants and destroy them completely.

Use experts when you are planning for these tools. All of these methods require handling and safety precautions. Proper breathing filters, eye & skin protection, as well as disposable gowns/hazmat suits should be used when applications are performed and until the applications have dissipated to safe levels. Be careful not to co-mingle removed plant materials. Gloves become transport and infection spreaders after use.

Please also be sure to review your harvest testing requirements and what treatments are safe for your consumers and within legal limits. No one wants to have their harvest rejected due to pesticide contamination.

Figure 2: Municipal Water Treatment, RAIR Cannabis, Michigan

Clean-up after application may be required depending on the bioinsecticide or chemical that is used. Again, always ensure the safety of your employees and take precautions.

Start the application of your control options with your site map, room assignments and scout monitoring teams. Where does air flow into and within the facility? When your scouting team count logs go beyond your acceptable thresholds, here are some options for you.

Let’s begin with cleaning your irrigation and nutrient water sources. For a walk-through tutorial for incoming water treatment, humidity recovery and nutrient water recycling, please review the video tour of Water Treatment at RAIR Cannabis to see how an expert has done it.

From the IPM Planning Guide standpoint, peroxide and acid sterilizers can be used to clear irrigation water, for surface wipe-downs or as direct plant applications. We will cover those first. Caustic sterilizers require PPE for cleaning. Forgive my image here, we were just using water.

Concentrated Cleaners for Surfaces & Irrigation Sources (Hydrogen Peroxide & Sanitizers)

Plant interacting interfaces, i.e. surfaces, benches, walls, floors, trays, utensils, clippers, etc. should be sterilized with every use. Methods can include direct wipe-down or scrub, concentrated or diluted sprays or room vaporizers. A good example of hydrogen peroxide (H2O2) liquid would be a food grade sanitizer with 3-35% H2O2 content. Use acceptable diluted versions of these cleaners as appropriate.

Figure 3: Cleaning & Scrubbing, Where’s the PPE?

A commercial example would be Zerotol 2.0 with 27% H2O2 & their proprietary acid mix. Alternatively, you can use direct hydrogen peroxide generators from commercial sources to generate your H2O2 at various concentrations. More detailed examples are included in the complete Integrated Pest Management Guide (link at the end of this article). Establish your procedures for sterilizing your rooms and tools before you introduce plants, and describe what is to be done after every harvest and room turn. Track the cleaning materials used for your operational records. You will find this useful to track operational cost over time.

Sanitizing Acids for Surfaces & Irrigation Sources

Similar to hydrogen peroxide, hypochlorous acid (HOCl) comes in many commercial forms and can also be generated onsite using purchased generators. Commercial mix examples are UC Roots, Watermax and Athena Cleanse. They come in 0.028% to 15% concentrations. Self-generators range in output from highly precise 0.01% to 1% concentrations with more examples in the guide.

Treatment Tools

OK, so enough on cleaning preparation. Here are some tools that can be used to fight back against a pest intrusion:

Non-Chemical Microbial Biofungicide for Pathogens in Soil or Fertigation Water

Microbial fungicides are available to clear nutrient irrigation systems by minimizing pathogens and improving plant resistance to infections. Some fungicide versions target root pathogens by attacking the diseases directly. Others control or suppress common water carried challenges like pythium, rhizoctonia, phytophthora, fusarium and others. Brand names include Botanicare, Bonide, BioWorks, Actinovate, Mycostop and many more. Details covered in the guide.

Non-Chemical Microbial Bioinsecticides for Larval Stages

These biological tools attack the organisms or insects at a physical or mechanical way by breaking down the pest’s nervous system, biochemistry, or structural integrity (exoskeletons, etc.). These are engineered or living organisms (bugs to attack bugs) that are developed as targeted attacks for specific pests. Brand names are BioCeres, Botanigard, Venerate, Bio Solutions and others.

Minimal Risk Chemical Pesticides for Airborne Critters

Figure 3: Example Fungus Gnat Infestation – Royal Queen Seeds blog

Regularly approved for used in most locales, essential oils, natural acids (like citric acid) and insecticidal soap are commonly available in every hydroponic store. These work very well as safe spray “knock-down” insecticides for crawling or flying pests. Commercial examples use a proprietary mix of various oils, citric acids or isopropyl alcohol to do their task (examples in guide). Insecticidal soaps and fungicides for surface cleaning perform a similar purpose and typically use potassium salts or fatty acid mixtures.

Biochemical Pesticides

These tools are used to inhibit insect or fungal growth to acceptable levels. The multifaceted and commonly used neem oil comes in many commercial versions and is a naturally occurring pesticide extracted from the leaves and seeds of the neem tree. Example brand names are Bonide, Monterey, Triact and others. They range in concentrations from 0.9% to 70% concentrations. These oils suffocate living organisms or eliminate moisture to kill insects, spores or fungus at their initiation and throughout their lifespan.

Another option here are Azadirachtins. These act as insect growth regulators and disrupt the bugs natural evolution. Brand names are AzaGuard, AzaMax and others in the guide.

In summary, this week

We summarized some of the many pest control options available for water treatment, soil borne, intermediate or flying pests. We also covered various concentrations for these pesticide and sterilizer options. If you are not familiar with dilution ratios, %, PPM terms and how to apply the correct level of pesticide, you may find our plant science test kitchen blog on this topic of use here.

Chemical access and use should be restricted to employees familiar with their authorized application. PPE is very important to protect any employee that will come in contact with materials, liquids or vapors for chemical resources (gloves, boots, respirators, Tyvek (or equivalent protective wear) suits and eye protection or goggles.

For more detail on each of these treatments, you can see examples for your integrated pest management procedures in our complete white paper for Integrated Pest Management Recommendations, download the document here.

In our next chapter, Pest Population Control Actions, we will review control thresholds and example plans for a range of problems from biofilm build up to white flies and more. Our final chapter after that will suggest an emergency response framework and how to address pest outbreaks. See you next week.

May 23, 2023

Building An Integrated Pest Management Plan – Part 1

By Phil Gibson

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This is the first part of a series of articles designed to introduce an integrated pest management framework for cannabis cultivation facilities. Part one details an overview of the plan as well as pest identification. Part two comes out next week and will delve into the world of pest monitoring and record keeping. Stay tuned for more!

Figure 1: Integrated Pest Management Cycle

Background

Integrated Pest Management (IPM) is a philosophy of pest prevention and control that integrates cultural, mechanical, physical and chemical practices to control pest populations within an acceptable degree of economic tolerance.

IPM encourages growers to take a step-wise approach to determine the most appropriate means necessary for avoiding pest-related economic injury through careful consideration of all available pest control practices.

When practicing IPM, less invasive non-chemical practices are given priority, until escalation necessitates otherwise.

This is Part 1: Pest Identification & Monitoring/Communications

Personal experience in a facility is a great place to start. Review your history and identify a list of pests that you have experienced in this or previous grows. Point out which pests currently exist where they were or are currently and possible sources of the contamination/infestation.

Map out your facility with clear entry/exits, plumbing & drainage and air flow access to visually see and understand potential access points for crawling, flying or airborne pests.

From your nursery mother room to cloning and vegetation areas, what are the transfer methods as you move from one area to another. Are pests present in these areas? Where could they have come from? Oftentimes, a cultivator may not have the space for their own mother and cuttings/cloning space. In these cases, where did the outsourced clones come from? What are the IPM controls in place for these genetic sources? Are they carriers of the challenges transferred to your own facility? It is important to identify the possible source of pest potentials

Does your flower room have white flies or fungus gnats? Locating these and identifying the likely source is a good place to start if you have an ongoing infestation.

Figure 3: Example Aeroponic Facility Layout For IPM Planning

Powdery mildew is a routine challenge if air into your facility is not filtered and sterilized to eliminate these spores.

What is the Source of Your Irrigation/Fertigation Water?

Water is a crucial element for high-value indoor farms such as those that grow cannabis. However, water can also be a source of disease-causing microorganisms that can negatively impact the growth and yield of crops. Monitoring, filtering and sterilizing the biological contents of water is therefore crucial in ensuring the health and quality of high-value crops.

Unfiltered water can contain a range of pathogens such as bacteria, viruses, fungi and parasites that can cause root, stem and bud rot. These diseases can cause significant losses in crop yield and quality, which can be devastating for indoor farmers growing high-value crops.

Figure 4: Precision Aeroponics at FarmaGrowers GMP Facility, South Africa

Monitoring the quality of water that is brought into the indoor farm is the first step in ensuring that the water is free from harmful pathogens. This involves regular testing of the incoming water for parameters such as pH, dissolved oxygen, TDS, nutrient content and microbial load. This allows cultivators to identify aspects of the incoming water they need to address before the water is provided to their crops to prevent potential problems.

Is your plumbing building biofilm that is feeding into your irrigation lines? Obviously, there are many potential sources when you go through an inventory of the risks for your facility. From that initial step, you will build your management team and label who should be contacted when a pest is found. Do you have an IPM specialist or is this a resource that needs to be contracted to address an infection?

Building this communications tree is your first step to fewer pest issues and higher yields and potency.

For the complete white paper on Integrated Pest Management Recommendations, download the document here. Part two comes out next week and will delve into the world of pest monitoring and record keeping. Stay tuned for more!

November 29, 2022

Addressing Cannabis Price Compression With Science

By Mark Doherty

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Cannabis cultivators across the U.S. are confronting plummeting wholesale prices and tighter profit margins. Operators in Pennsylvania say flower prices have fallen from around $4,000 a pound to around $3,000, on average, and prices in the more mature markets of California, Oregon and Colorado have experienced extreme volatility. Prices in those states are averaging around $700 per pound but of course, that’s an average. There are whispers that prices are as low as $150, revealing how bad the situation really is.

Oversaturation of legal cannabis affects commercial growers everywhere. For example, when Oklahoma opened its free-wheeling medical cannabis program with unlimited business licenses, the pipeline of cannabis from legacy markets in California was disrupted and a glut of flower from the gray market began to influence pricing within the state’s legal market. Although cannabis is not federally legal and interstate commerce is banned, what happens in one state definitely affects what happens in another.

Competition in legal markets has also increased dramatically in recent years as multistate operators expand their footprint and consolidation proliferates. Vertically integrated cultivation, manufacturing and retail is becoming unsustainable for many mom-and-pop businesses, while MSOs can leverage their cash and resources to weather the current storm.

Economic Viability Meets High Quality Production

All of this news is not necessarily negative, but it’s a definite cautionary tale: Being complacent opens opportunities for others. Growing cannabis is complex. It is working with a living and breathing machine. Some businesses fail because operators are not able to find the perfect blend of horticulture, plant science and manufacturing efficiency necessary for success. Some see it simply as a manufacturing concern, others a scientific endeavor, and still others as an artform. An understanding of growing cannabis as a blend of all three is paramount.

Squeezing more high-quality product out of existing facilities is essential. Costs for labor and electricity are relatively fixed, so operators must turn to technology to improve yield, quality, consistency and plant health without increasing operating expenses.

Over the years, growers have often resisted change surrounding what they view as “the way” or “the best,” but with the industry in such distress, the time is now to address facility inefficiencies.

Much like the evolution of LED use, there might be an initial skepticism at the cost and real value of new cultivation technology, but the economics are too compelling to ignore. The majority of all indoor grows now use LED. The progression from single-ended bulbs, to double-ended HPS, to LED is analogous to plants on the floor of a grow facility, to rolltop benches, and now to vertical farming using racks.

Vertical Cultivation Science

Crop steering applies plant science directly to commercial production. The methodology is based on the idea that plants can be manipulated to grow and perform a certain way. For cannabis plants, the science really comes into play with inter-canopy airflow.

When airflow occurs under the surface of the leaf of the plant, the stomata opens and gas exchange increases as water vapor and oxygen are released and carbon dioxide is absorbed. The micro-barrier of air trapped against the leaves is broken and the exchange of gasses and energy in the cultivation environment is improved, enabling the entire grow to increase its yield. And while CO2 supplementation is widely used and has been for years with positive effect, the under-canopy airflow provides greater efficiency relative to the operating expense of pumping CO2 into the grow room. Money can be saved by applying science to encourage the plant to uptake the extra CO2 that has been naturally released.

Proper Drainage Is Also Key

Controlling the space with proper drainage will keep a host of problems at bay

Drainage issues like the puddling of water in vertical farming are detrimental to the efficiency of a cultivation facility. Even when growers use precision irrigation techniques to give the plants pinpointed irrigation volumes over different time periods, rack systems can still suffer from drainage issues. That means that affected plants are not receiving the precision irrigation strategy and the entire purpose of the scientific application is defeated.

Precise drainage is critical because standing water opens the door to root born disease, pests, and microbial issues. Spray regimes can address this problem, but they cost money. The key is to reduce dependency on mitigation efforts by better controlling the agricultural space and improving outcomes with a scientifically approached plan.

Greenhouses, warehouses and vertical farming facilities all have potential environmental issues that reduce their economic viability, but with proper vertical air movement, drainage equipment and an understanding of microclimates and how to address them scientifically, efficiency and product quality are enhanced.

Time to Embrace Change

As with any industry, there is resistance to adopting new technology in cannabis cultivation. The original and legacy players will always claim they know how to best grow their plants, but the reality is that the business needs must be addressed.

As canopies increase within a facility, advancements like robotics, LEDs and advanced airflow technology define how the industry operates and continues to improve. Efficiency keeps business alive—cannabis growers must continually assess their operations and make the capital investments that will pay off as wholesale prices continue to decline.

June 30, 2022

Your Cultivation Plan is the Most Important Factor to Increase Your Yield

By David Perkins

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Having a well-built grow room with adequate lighting, the ability to properly control the environment, proper nutrient feedings, a good pest management plan, well trained employees and an experienced cultivation manager are very important to the overall output of cannabis plants. However, even if you have all those measures in place, there’s no guarantee of success. One factor that is often overlooked is how many harvests you can get per year, as clearly the more harvests you can get in a given time period, the more likely your chances of success are in this competitive industry. This is why having a good cultivation plan in place, with proper foresight and planning, is so essential to success.

Increasing yield or production output in a cannabis cultivation facility can often be as simple as having the right cultivation plan in place to ensure that you are harvesting the maximum number of times per year. All it requires is a well thought out plan, and best of all, that does not cost any money if you have someone with enough cultivation experience assisting you and will earn back more than the cost of paying a consultant to get such a plan in place.

In this article I will explain why changing nutrients, grow media or even a cultivation manager may not necessarily increase yield, quality or your chance of success. What you should be focusing on is your cultivation plan and the scheduling of your cultivation cycles.

Why changing nutrient companies may not necessarily increase your yield

Nutrient dosers are used to inject fertilizer directly into irrigation lines

For the most part, nutrient companies use the same ingredients in their product lines and often buy them from the same source, but they combine them in different forms and ratios to create their “unique” product. You can go to a grow store, pick five different nutrient products, read the labels and compare the different nutrients in each one. You will find for the most part that they are very similar. Generally speaking, you could pick any one of those five nutrient companies and have great results. Mixing nutrients into a nutrient tank needs to be done precisely and if your employees are not doing it properly this can lead to plant health issues. In larger cultivation facilities, often nutrient dosers are used to inject fertilizer into the irrigation lines without having to mix nutrients. However, if the dosers are not set to the proper ratios, this can also lead to plant health issues.

There are a few companies that I really like that have a different approach to plant nutrition, which saves time and can prevent human error associated with mixing and applying liquid nutrients. Soilscape solutions, Organics Alive and Beanstock Agriculture all have nutrient lines that are intended to be used with soil or soilless media that can be amended into the soil which provide a slow steady release of nutrients that the plants can uptake as needed. This avoids the risk of human error in repeatedly applying liquid nutrients to the plants.

Why changing grow medium and nutrients will not necessarily improve your yield but may increase yourquality

Whether it is rock wool, coco fiber, a soilless mix or living soil, everything has a limit. Giving your plants the proper amount of water and the frequency at which you water, along with having sufficient room for the roots to grow are key factors to ensuring plant health. If your plants aren’t getting watered properly, no matter what media you are growing in, you will be having problems. Changing things like grow media won’t result in instant success, as there will always be a learning curve when making changes to your cultivation. If you cannot adapt quickly enough, you can quickly create major problems.

plebanisoil — Changing things like grow media won’t result in instant success, as there will always be a learning curve when making changes to your cultivation.

You would be better off to master the grow media you are currently working; you will have more chance of success making slight alterations to your current media than you will if you switch your grow media altogether. There are so many different nutrient lines, soil companies, coco coir companies and the truth is any of them can lead to success.

Changing grow media and nutrients do play a large role in quality though. With cannabis being legalized in many states, the overall quality of cultivation inputs have increased, especially nutrients. However, in general, with some exceptions, the quality of cannabis has not necessarily increased along with the increase in quality of nutrients. One exception: I would argue that switching from salt nutrients and rock wool, to organic living soil will result in an improvement to the flavor, quality and terpenes of the cannabis.

A lot of people use rock wool with salts because it’s easier to scale up than if you are growing in soil, but some quality is also sacrificed. Soil is heavy and messy and most people throw their soil away which takes a lot of money and labor to do. Reusing your soil is one of the best ways to save time, money and increase quality. I had a friend that grew the same variety, same lights, same ventilation but grew hydroponically with salt-based nutrients and he would always say the cannabis I grew, organically, tasted better. The same was true when we grew the same variety outdoors. He used salt-based fertilizer, I used amended soil with water. There wasn’t really a comparison in flavor and the yield was not compromised either! This was his opinion not mine.

I think the vast majority of consumers have not seen the type of quality that someone in Northern California who has been smoking and growing for 20 plus years has seen. Quality is relative to what you have been able to acquire. Most people especially nowadays will never see the quality that used to be common when we didn’t treat the sacred herb like a commodity. When you do it for the love of the plant it shows. Remember, quality is relative to your experience and if salty weed is all you know, you are probably missing out.

Why changing your Cultivation manager may not necessarily increase your yield

Every cultivation facility should have an experienced cultivation manager who is knowledgeable in the areas of nutrient requirements, pest management, environmental requirements, managing employees and overall facilities operations. If a grow room cannot sustain the proper environmental set points, blaming the problems and issues that arise on the cultivation manager is not fair. It is a common problem in the cannabis industry – the owners of a company are not seeing the results that they want and think that by replacing the cultivation manager it will solve all their problems. In reality, often the problem results from upper management or owners of the company not providing the cultivation manager the tools necessary to perform their job at the highest level. Another common problem is when owners fire the cultivation manager and replace them with lower-level employees to manage the facility. The problem with this is those employees do not have enough experience nor the attention to detail to successfully run a cultivation facility. The result is that yield and quality suffer tremendously.

You should be harvesting every 60-70 days

If you are cultivating strains that finish flowering in 60 to 70 days you should be getting five harvests per year.

The reality is there is no one specific thing you can try or buy that will result in success. It is everything combined, the HVAC system, lights, genetics being grown, water quality, air quality, root zone temperature, ability to control environment, having a clean facility, disease free plants, knowledgeable cultivation manager etc. that are required to operate a successful cultivation.

But all of that is less important to yield than a good cultivation plan. Cultivation methods directly tie into the overall production of a facility. But, regardless of whether you’re growing in soil, hydroponics, using LED or HPS, have low or high plant counts, if you don’t have the ability to harvest a grow room, clean and replant within a very short amount of time (ideally one or two days) then you’re going to be losing out on profit.

If you’re cultivating strains that finish flowering in under 60 days you should be getting six harvests per year. If you are cultivating strains that finish flowering in 60 to 70 days you should be getting five harvests per year. To do this, you will need to have the appropriate amount of plants that are ready to be flowered to refill your grow room or greenhouse ready to flower. With a little bit of planning and foresight you will be able to do this, and you will be on your way to producing your highest yield potential.

If you are struggling to have enough plants that are ready to flower once you are done harvesting and cleaning your grow room, having trouble planning your cultivation schedule to maximize production, or struggling to maintain a mother and clone room to supply your own plants or planning for the appropriate amount of labor, contact Floresco Consulting and talk with one of our cultivation advisors to get you back on track. We can guide you to ensure you are harvesting, cleaning and replanting every 60 days. Contact us today to get your facility producing at its maximum potential.

March 16, 2021

The Ten Biggest Mistakes When Building a Cultivation Facility

By Michael Burnstein

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As cannabis legalization becomes more prolific across the United States, entrepreneurs are entering the cultivation business in droves. With so many new companies entering the market and growing cannabis, there are a lot of common errors made when getting started. Here are ten of the biggest mistakes you can make when building a cannabis grow facility:

Failure to consult with experts in the cannabis business – poor planning in floorplan and layout could create deficient workflow causing extra time and costing profits. Bad gardening procedures may result in crop failure and noncompliance could mean a loss of license. Way too often, people will draft a design and begin construction without taking the time to talk to an expert first. Some important questions to ask yourself and your consultant are: What materials should be used in the building of the grow? Is my bed-to-flower ratio correct? How long will it take before I can see my first harvest?
Contractor selection – DO NOT build your own facility; leave it to the experts. Sure, you have experience building things and you have a friend who has worked in construction. Do not make this mistake – Our experience can save you from the mistake’s others have made. To stay lucrative in this competitive industry and to maximize your products’ quality and yields, have the facility built right the first time. Paying an experienced, qualified cannabis professional to build you a facility will produce better yields and will save you time, stress and money in getting you from start of construction to your first crop.
Not maximizing your square footage potential – With today’s fast changing environment, multi-tiered stationary racks, rolling benches and archive style rolling racks help maximize square footage. Without the proper garden layout, you will find yourself pounds short of your potential each harvest.
Inadequate power – Not planning or finding out if there is sufficient power available at the site for your current and future needs. This will stop you from building the overall square footage you want. When finding a building make sure you first know how much power you will need for the size grow you want. With proper engineering you will find out what load requirements will be so you can plan accordingly.
Material selection – The construction material that goes into a cultivation and extraction facility should consist of nonabsorbent anti-microbial finishes. The days of wood grow benches are long gone. Epoxy flooring, metal studs and other materials are mandatory for a quality-built, long-lasting facility.
Hand watering – Once your facility is up and running, many people feel they have spent enough money and they can save by hiring people to water by hand, rather than going with an automated system to handle the watering and nutrients. The problem with this is your employees are not on your plants timetable. What if an employee calls off and can’t come into water at the right time or they mix the wrong amount of nutrients from the formula you have selected? These are issues we see a lot. It is critical to perform precise, scheduled watering and nutrient delivery to increase your yields.
Failure to monitor and automate – Automating your grow is important for controlling the light and fertigation schedules as well as data collection and is crucial to maximizing yields. Being able to do this remotely gives you peace of mind in that you can monitor your grow room temperature and humidity at all times and be notified when something is not right.
Poor climate – This can cause stunted growth, smaller harvests and test failures. Our experience has taken us to facilities that have had mold and mildew issue due to poor climate. Proper air balancing, additional dehumidification along with a proper cleaning procedure can get a facility back in working order. Installing proper climate control systems could save millions of dollars.
Choosing the wrong site or building – Not knowing the history of the building you are choosing to rent or buy can create logistical and monetary nightmares. The wrong site can be a distribution and marketing disaster. In the wrong building, exponentially more money is spent to bring that building up to the standards needed for successful production and yields. For example, bringing in the ceiling and the cleaning of an existing facility can be a great expense. If you do not know what you are looking at when you purchase, you may be in for months of unaccounted expenses and inaccurate timelines. This can be detrimental for companies and individuals that are on restricted timelines and have to start producing successful and continuous yields from a space that has to be converted into a prime grow facility.
Failure to maintain your facility – A dirty site creates an invitation for pests, workplace injuries, unhealthy working environment and equipment failure. Keeping the facility and equipment properly maintained with routine service will ensure efficiency, longevity of equipment life span and reduce mold and bacteria risk. Clean facilities = clean plants and better flower.

March 25, 2020

Soapbox

Clean Grow Still Failing? Check for Endophytic Mold

By Bernie Lorenz, PhD

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The journal Frontiers in Plant Science recently shared an important article from researchers at Simon Fraser University in British Columbia, highlighting the “Pathogens and Molds Affecting Production and Quality of Cannabis Sativa.”

As a chemist focused on the science of preventing and mitigating mold in greenhouse and indoor cannabis grow facilities, this piece was fascinating to me. Like many others, it details and explains prevalent mold like Penicillium, Cladosporium and Aspergillus – things I see in grows every day.

But wait, there’s more fungi

The research and resulting article also brought up another type of fungi – endophytic mold. Endophytic mold usually lives symbiotically with plants, or is at least beneficial for both plant and fungi.

But not always.

In the past, the industry has believed that damaging mold spores were found on the outside of the flower. When moved, that flower would release the spores and send them flying – often creating massive cross-contamination issues for indoor grows.

“While cannabis is an incredibly powerful plant in terms of its medicinal properties, it is unfortunately highly susceptible to many pest and pathogens,” says Hope Jones, PhD, CEO, Adivina & ECS. “And it is this susceptibility that is so challenging to many inexperienced or undisciplined grow operations.”

Now, however, we know that there’s another culprit to add to the list: the inner parts of the plant can also be a source of endophytic cross contamination and mold.

Since it grows inside of the plant, this fungus creates high spore counts that can cross contaminate from outside, into the flower.

Treating mold in a facility

Here’s the good news:

This seemingly bad news – that there’s a new fungus to worry about, and it is inside the flower – may actually help cannabis grows struggling with mold, and those who are following the proper protocols already.

A petri dish of mold growth from tested cannabis Photo credit: Steep Hill

Effective mitigation protocols can include things like treating HVAC systems, controlling humidity, using products like chlorine dioxide to treat irrigation lines, enforcing protective clothing and shoe covers for employees, reducing the amount of in-and-out for employees around grow rooms.

These are important upstream and environmentally-focused integrated pest management (IPM) programs that will usually keep facilities clean and relatively mold-free.

But if these programs are in place, and there’s still an issue, Endophytic fungi may be to blame.

If you are having ongoing mold issues but have ruled out cross-contamination and a facility without proper protocol, look to the mother plant.

“Small mistakes in agricultural practices are amplified with cannabis,” Dr. Jones continues. “And today’s propagation practices of traditional cloning add to this vulnerability. Cannabis is an annual plant and by keeping mothers in a perpetual state of vegetative growth for years, and taking repetitive cuttings produces clones in a highly stressed state. This stressed state diminishes genetic potential and weakens a plant’s ability to fight disease and pests.”

Testing for and addressing endophytic fungi

If these concerns are ringing a bell, remember, there is also a way to test for Endophytic mold.

Checking cuttings from suspected mother plants over a period of time is the best way to see if the Endophytic mold is present.

A section of the mother plant cutting is placed into a solution (for example, as outlined by the article, a very concentrated hypochlorite followed by 70% Ethanol) that will kill all of the microorganisms that are present on the surface of the plant tissues.

A large tissue culture facility run in the Sacramento area that produces millions of nut and fruit trees clones a year.

From there, an unadulterated dissection of the internal tissues can be extracted and cultured for quantification and identification of endophytic fungi.

“Tissue culture offers a form of genetic rebooting returning the plant to its natural genetic potential and thereby strengthening its natural ability to defend against environment assault,” says Dr. Jones. “It also allows the breeder to conduct pathogenic disease testing which provides the entire industry with a higher level of scientific certainty and analysis.”

If you find this mold inside of the mother plant, your facility’s mold problem could be a systemic issue, not an environmental one.

If you do find that Endophytic mold is causing issues, of course, you may have to destroy the mother plant.

This should not mean the end of a strain. Tissue culture on a cutting is an option that can eliminate the unwanted fungi and save the genetics. Using those genetics to regrow a mother will start fresh and avoid the intrinsic mold that was plaguing the strain prior.

Growing knowledge

The practice of checking mother plants for Endophytic mold is not yet commonplace in cannabis, but the hemp business is leading the way.

They’re testing to create very clean plants, so you don’t have issues during cultivation.

Major growers in the U.S. could save millions in lost harvests with mold mitigation. If your current IPM program isn’t doing the trick, you may want to follow in hemp’s footsteps and look inside the plant.

March 12, 2020

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.

March 5, 2020

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.

February 28, 2020

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.

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.

July 11, 2019

Cannabusiness Sustainability

Environmental Sustainability in Cultivation: Part 3

By Carl Silverberg

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Part 1 in this series went into a discussion of resource management for cannabis growers. Part 2 presented the idea of land use and conservation. In Part 3 below, we dive into pesticide use and integrated pest management for growers, through an environmental lens.

Rachel Carson’s book Silent Spring in 1962, is often credited with helping launch the environmental movement. Ten years later, VP Edmund Muskie elevated the environment to a major issue in his 1972 Presidential campaign against Richard Nixon. 57 years after Ms. Carson’s book, we’re still having the same problems. Over 13,000 lawsuits have been filed against Monsanto and last month a jury in Alameda County ruled that a couple came down with non-Hodgkin’s lymphoma because of their use of Roundup. The jury awarded them one billion dollars each in punitive damages. Is there a safer alternative?

“Effectively replacing the need for pesticides, we use Integrated Pest Management (IPM) which is a proactive program designed to control the population of undesirable pests with the use of natural predators, a system commonly known as “good bugs (such as ladybugs) fighting bad bugs”, states the website of Mucci Farms, a greenhouse grower. While this applies to cannabis as well, there is one major problem with the crop that isn’t faced by other crops.

While states are moving rapidly to legalize it, the EPA is currently not regulating cannabis. That is in the hands of each state. According to a story in the Denver Post in 2016, “Although pesticides are widely used on crops, their use on cannabis remains problematic and controversial as no safety standards exist.” Keep in mind that it takes a lot more pesticides to keep unwarranted guests off your cannabis plant when it’s outdoors than when it’s in a controlled environment.

We’re accustomed to using endless products under the assumption that a range of governmental acronyms such as NIH, FDA, OSHA, EPA, USDA are protecting us. We don’t even think about looking for their labels because we naturally assume that a product we’re about to ingest has been thoroughly tested, approved and vetted by one of those agencies. But what if it’s not?

Again, cannabis regulation is at the state level and here’s why that’s critical. The budget of the EPA is $6.14 billion while Colorado’s EPA-equivalent agency has a budget of $616 million. According to the federal budget summary, “A major component of our FY 2019 budget request is funding for drinking water and clean water infrastructure as well as for Brownfields and Superfund projects.” In short, federal dollars aren’t going towards pesticide testing and they’re certainly got going towards a product that’s illegal at the federal level. That should make you wonder how effective oversight is at the state level.

What impact does this have on our health and what impact do pesticides have on the environment? A former Dean of Science and Medical School at a major university told me, “Many pesticides are neurotoxins that affect your nervous system and liver. These are drugs. The good news is that they kill insects faster than they kill people.” Quite a sobering thought.

“We have the ability to control what kinds of pesticides we put in our water and how much pesticides we put in our water.”Assuming that he’d be totally supportive of greenhouses, I pushed to see if he agreed. “There’s always a downside with nature. An enclosure helps you monitor access. If you’re growing only one variety, your greenhouse is actually more susceptible to pests because it’s only one variety.” The problem for most growers is that absent some kind of a computer vision system in your greenhouse, usually by the time you realize that you have a problem it’s already taken a toll on your crop.

Following up on the concept of monitoring, I reached out to Dr. Jacques White, the executive director of Long Live the Kings, an organization dedicated to restoring wild salmon in the Pacific Northwest. Obviously, you can’t monitor access to a river, but you certainly can see the effects of fertilizer runoff, chemicals and pesticides into the areas where fish live and eventually, return to spawn.

“Because salmon travel such extraordinary long distances through rivers, streams, estuaries and into oceans they are one of the best health indicators for people. If salmon aren’t doing well, then we should think about whether people should be drinking or using that same water. The salmon population in the area around Puget Sound is not doing well.”

We talked a bit more about pesticides in general and Dr. White summed up the essence of the entire indoor-outdoor farming and pesticides debate succinctly.

“We have the ability to control what kinds of pesticides we put in our water and how much pesticides we put in our water.”

If you extrapolate that thought, the same applies to agriculture. Greenhouse farming, while subject to some problems not endemic to outdoor farming, quite simply puts a lot fewer chemicals in the air we breathe, the water we drink and the food we eat.