One goal all growers seem to agree on is the need to increase density in their houses. How that gets done, well, there are a variety of ways and here’s one way a grower chose to do it:
With 45,000 square feet of greenhouse space, Nathan Fumia, a cannabis grower and consultant for a commercial operation in California, wasn’t pleased with what he was seeing. “If I put my hand inside the canopy and I can see sunlight on it, I’m losing money,” was how he described the situation. Unfortunately, the operators and staff of the greenhouse disagreed. They thought increasing density would rob the leaves of needed light.
He chose to test his theory by increasing the number of plants on one of his benches from 140 to 150 plants. To ensure the validity of the research, Nathan grew the same strain on Bench 1 as Bench 2, and to make sure all the metrics were equal, he even processed the crops separately. After weighing, Bench 2 (his research bench) showed an 8% higher yield than Bench 1.
“The post-harvest data from the weight, yield confirmed my decision to maximize density by increasing the total number of plants per bench,” says Fumia. “Whenever I saw red on the canopy heat map from LUNA, I knew there was room for improvement and I knew that I wasn’t making the money that I should have from those areas.”
His next challenge was where to place the extra ten plants? Did it make a difference or could he just shove 150 plants in a space that was originally planned for 140? Again, his greenhouse system was able to pinpoint the best sub-sections on the benches and Nathan was able to see exactly which plants were growing the fastest. That also gave him the ability to understand why certain quadrants of the bench were doing better than others.
“We were able to determine which quadrant on which bench was already at 100% density, and determine which quadrant wasn’t. Without that data, it would have been pure guesswork.”
He dialed down even further to find out which cultivars grew the best on a particular bench in the greenhouse. “Some cannabis cultivars need more light, some need less, some need warmer climates, and some need cooler climates,” Fumia noted. “Additionally, in order to increase the density of flowering points/buds, we began focusing on better pruning techniques in the vegetative phase, directly increasing branches for flowering.”
With optimization even more important now than it was 12-18 months ago, Nathan summed up the impact on his bottom line. “With a crop cycle averaging just over six a year, at that time we were averaging $600-$800 a pound depending on the strain. Some were even more. Ten extra plants per bench per cycle was a nice bounce for us.”
Obviously, this isn’t the only way to increase density. What’s your suggestion? Share your ideas with the rest of us by posting your comments below.
Can the laboratory accurately analyze sample products like my sample?
Can the laboratory reproduce the sample results for my type of sample?
Now let’s discuss the most important QC test that will protect your crop and business. That QC sample is the Matrix Sample. In the last article in this series, you were introduced to many QC samples. The Matrix Sample and Duplicate were some of them. Take a look back at Part 3 to familiarize yourself with the definitions.
The key factors of these QC sample types are:
Your sample is used to determine if the analysis used by the laboratory can extract the analyte that is being reported back to you. This is performed by the following steps:
Your sample is analyzed by the laboratory as received.
Then a sub-sample of your sample is spiked with a known concentration of the analyte you are looking for (e.g. pesticides, bacteria, organic chemicals, etc.).
The difference between the sample with and without a spike indicates whether the laboratory can even find the analyte of concern and whether the percent recovery is acceptable.
Examples of failures are from my experiences:
Laboratory 1 spiked a known amount of a pesticide into a wastewater matrix. (e.g. Silver into final treatment process water). The laboratory failed to recover any of the spiked silver. Therefore the laboratory results for these types of sample were not reporting any silver, but silver may be present. This is where laboratory results would be false negatives and the laboratory method may not work on the matrix (your sample) correctly. .
Laboratory 2 ran an analysis for a toxic compound (e.g. Cyanide in final waste treatment discharge). A known amount of cyanide was spiked into a matrix sample and 4 times the actual concentration of that cyanide spike was recovered. This is where laboratory results would be called false positives and the laboratory method may not work on the matrix (your sample) correctly.
Can the laboratory reproduce the results they reported to you?
The laboratory needs to repeat the matrix spike analysis to provide duplicate results. Then a comparison of the results from the first matrix spike with its duplicate results will show if the laboratory can duplicate their test on your sample.
If the original matrix spike result and the duplicate show good agreement (e.g. 20% relative percent difference or lower). Then you can be relatively sure that the result you obtained from the laboratory is true.
But, if the original matrix spike result and the duplicate do not show good agreement (e.g. greater than 20% relative percent difference). Then you can be sure that the result you obtained from the laboratory is not true and you should question the laboratory’s competence.
Now, the question is why a laboratory would not perform these matrix spike and duplicate QC samples? Well, the following may apply:
These matrix samples take too much time.
These matrix samples add a cost that the laboratory cannot recover.
These matrix samples are too difficult for the laboratory staff to perform.
Most importantly: Matrix samples show the laboratory cannot perform the analyses correctly on the matrix.
So, what types of cannabis matrices are out there? Some examples include bud, leaf, oils, extracts and edibles. Those are some of the matrices and each one has their own testing requirements. So, what should you require from your laboratory?
The laboratory must use your sample for both a matrix spike and a duplicate QC sample.
The percent recovery of both the matrix spike and the duplicate will be between 80% and 120%. If either of the QC samples fail, then you should be notified immediately and the samples reanalyzed.
If the relative percent difference between the matrix spike and the duplicate will be 20% or less. If the QC samples fail, then you should be notified immediately and the samples should be reanalyzed.
The impact of questionable laboratory results on your business with failing or absent matrix spike and the duplicate QC samples can be prevented. It is paramount that you hold the laboratory responsible to produce results that are representative of your sample matrix and that are true.
The next article will focus on how your business will develop a quality plan for your laboratory service provider with a specific focus on the California Code Of Regulations, Title 16, Division 42. Bureau Of Cannabis Control requirements.
As many US States and Canadian provinces approach legalization of cannabis, the question of regulatory oversight has become a pressing issue. While public awareness is mainly focused on issues like age restrictions and impaired driving, there is another practical question to consider: should cannabis be treated as a drug or a food product when it comes to safety? In the US, FDA governs both food and drugs, but in Canada, drugs are regulated by Health Canada while food products are regulated under the CFIA.There are many food safety hazards associated with cannabis production and distribution that could put the public at risk, but are not yet adequately controlled
Of course, there are common issues like dosage and potency that pharmaceutical companies typically worry about as the industry is moving to classifying its products in terms of percentage of chemical composition (THC, CBD, etc. in a strain), much as we categorize alcohol products by the percentage of alcohol. However, with the exception of topical creams and ointments, many cannabis products are actually food products. Even the herb itself can be brewed into teas, added to baked goods or made into cannabis-infused butters, oils, capsules and tinctures.
As more people gain access to and ingest cannabis products, it’s only a matter of time before food safety becomes a primary concern for producers and regulators. So when it comes to food safety, what do growers, manufacturers and distributors need to consider? The fact is, it’s not that different from other food products. There are many food safety hazards associated with cannabis production and distribution that could put the public at risk, but are not yet adequately controlled. Continue reading below for the top four safety hazards for the cannabis industry and learn how to receive free HACCP plans to help control these hazards.
Aflatoxins on Cannabis Bud
Just like any other agricultural product, improper growing conditions, handling and storage can result in mold growth, which produce aflatoxins that can cause liver cancer and other serious health problems. During storage, the danger is humidity; humidity must be monitored in storage rooms twice a day and the meter must be calibrated every month. During transportation, it is important to monitor and record temperatures in trucks. Trucks should also be cleaned weekly or as required. Products received at a cannabis facilities should be tested upon receiving and contaminated products must always be rejected, segregated and disposed of safely.
Chemical Residues on Cannabis Plants
Chemical residues can be introduced at several points during the production and storage process. During growing, every facility should follow instructions for applying fertilizers and pesticides to crops. This includes waiting for a sufficient amount of time before harvesting. When fertilizer is being applied, signs must be posted. After cannabis products have been harvested, chemical controls must be in place. All chemicals should be labelled and kept in contained chemical storage when not in use to prevent contamination. Only food-grade chemicals (e.g. cleaners, sanitizers) should be used during curing, drying, trimming and storage.
Without a comprehensive food safety program, problems will inevitably arise.There is also a risk of excessive concentration of chemicals in the washing tank. As such, chemical concentrations must be monitored for. In general, water (obviously essential for the growing process) also carries risks of pathogenic bacteria like staphylococcus aureus or salmonella. For this reason, city water (which is closely controlled in most municipalities) should be used with an annual report and review. Facilities that use well water must test frequently and water samples must be tested every three months regardless.
Pathogenic Contamination from Pest Infestations
Insects, rodents and other pests spread disease. In order to prevent infestations, a pest control program must be implemented, with traps checked monthly by a qualified contractor and verified by a designated employee. It is also necessary to have a building procedure (particularly during drying), which includes a monthly inspection, with no holes or gaps allowed. No product should leave the facility uncovered to prevent fecal matter and other hazards from coming into contact with the product. Contamination can also occur during storage on pallets, so pallets must be inspected for punctures in packaging material.
Furthermore, even the best controlled facility can fall victim to the shortcomings of their suppliers. Procedures must be in place to ensure that suppliers are complying with pest and building control procedures, among others. Certifications should be acquired and tracked upon renewal.
Pathogenic Contamination Due to Improper Employee Handling
Employee training is key for any food facility. When employees are handling products, the risk of cross-contamination is highest. Facilities must have GMP and personnel hygiene policies in place, with training conducted upon hiring and refreshed monthly. Employees must be encouraged to stay home when sick and instructed to wear proper attire (gloves, hair nets, etc.), while glass, jewelry and outside food must not be allowed inside the facility. Tools used during harvesting and other stages may also carry microorganisms if standard cleaning procedures are not in place and implemented correctly by employees.
As the cannabis industry grows, and regulatory bodies like the FDA and CFIA look to protect public safety, we expect that more attention will be paid to other food safety issues like packaging safety (of inks and labels), allergen control and others. In the production of extracts, for example, non-food safe solvents could be used or extracts can be mixed with ingredients that have expiration dates, like coconut oil. There is one area in which the cannabis industry may lead the way, however. More and more often, risks of food terrorism, fraud and intentional adulteration are gripping the food industry as the global food chain becomes increasingly complex. It’s safe to say that security at cannabis facilities is probably unparalleled.
All of this shows that cannabis products, especially edibles (and that includes capsules and tinctures), should be treated the same as other food products simply because they have the same kinds of hazards. Without a comprehensive food safety program (that includes a plan, procedures, training, monitoring and verification), problems will inevitably arise.
Marijuana. Mary Jane. Pot. Reefer. Ganja. Weed. Joint. Grass.
The variety of terms used to describe cannabis are as diverse as the potentials of the plant itself – as well as the opinions of its proper nomenclature. A quick web search came up with a number of articles about how we should refer to cannabis, and opinions can be just as annoying and stinging as mosquitoes in the Everglades at the peak of season. Each of these words has an origin with which, having all the facts, you might not choose to align yourself. Words matter, and whether born from racism, xenophobia, or just plain ignorance, one will never go wrong following one simple piece of advice: “Never use a word or a phrase unless you know its meaning.” That said, it is not my intention here to add another opinion, but rather to present the topic from a different vantage. I’ll leave it up to you to decide whether or not it is worth your while to learn what you are saying, and in so doing, empower yourself to consider your audience as you consider your slang, just as you would with any other word.
The legalized cannabis industry has opened a plethora of professional opportunities. Thoughtfully considered, these opportunities can lead to new heights of professional accomplishment and financial earning capability. For those with the good fortune to have such opportunity in legalized cannabis, congratulations! You are a member of a very small group of pioneers who have the potential to shape an entire industry (remember that what Henry Ford did by creating the assembly line brought benefit, not just to the automotive industry, but to all industry.)
In this industry we are not just creating medical cannabis dispensaries, cultivation and processing facilities, we are creating new ideas and platforms for compliance, security, financial planning, quality assurance, botany, agriculture, sustainability, packaging, retail, inventory control, human capital – the list is as endless as the imagination – with the potential to influence capacity in every aspect of all types of industry, around the world. In the course of your career as a cannabis professional you will have a chance to interact with legal and healthcare professionals, legislators, regulators and investors. You may attend high profile events, hobnob with those who inspire social change and exchange dialog with thought leaders from all walks of life. As you represent your particular cannabis company, you will recognize that you also represent yourself, and in that very recognition will your thoughtfully chosen vernacular reveal your personal level of professionalism, eloquence and dignity; and irrespective of what, or from whom, any opinion originates, these core values are irreplaceable. Simply put, adults speak like adults.
A colleague reflected that we are not winning a long and drawn out struggle to divest ourselves from outdated prohibitions against the use of medical cannabis because of the words we are using, but because of education. While I agree with that assessment, the use of slang in professional discourse has a tendency to discredit the speaker and narrow the audience receptive to his message. As the scientific community and cannabis industry continues to re-educate society, our efforts will be bolstered by reaching as broad an audience as possible. Education presented professionally, eloquently, and with maturity engenders respect, goodwill and understanding. And that makes for fertile ground upon which to plant new ideas.
Budtenders represent the front line of any cannabis dispensary, and as such they are responsible for fostering a valuable customer service experience that will have clients returning in the future. However, the role of budtender goes much deeper than simply providing customer service. If you want to develop a profitable business with deeply embedded customer loyalty, you can do no better than to hire an exceptional team of budtenders to provide your patrons with useful information and a memorable customer service experience that will keep them coming back for repeat sales.
Offering Education for All Customers
Perhaps the most important role the budtender plays in any dispensary is providing the customer with useful knowledge that will help them make an informed purchase. For many people, legal cannabis is still a very new concept, and there are a good deal of customers who have never tried cannabis products during prohibition. For these customers, it will be essential that an experienced budtender walk them through everything they need to know and help them choose a strain that will be best suited to their needs. In addition to dosing and strain advice, budtenders can help explain how various paraphernalia works, as pipes and bongs will likely be foreign to them.
For less seasoned smokers, information on dosing can be the difference between a positive and negative experience. This is primarily a concern with edibles due to the long lasting nature of their effects, but can benefit other methods of delivery as well. The effects and potency of different strains can vary widely, so it can be difficult to judge how much to ingest. Though it is impossible to overdose on cannabis, using too much can have a negative impact on the experience. By offering experienced insight into the product they are selling, budtenders can ensure that the customer will have a more positive experience with cannabis, leading to lasting relationships with your company.
Budtenders can provide plenty of value for more experienced consumers as well. The fact of the matter is, there is an endless sea of different types of cannabis products on the market, and learning all of them requires more research than many cannabis consumers are willing to invest. Whether a customer uses cannabis for medicinal or recreational purposes, they will likely have developed preferences when it comes to what they like to smoke. It is important that budtenders be knowledgeable enough to direct the customer to a product that will live up to their expectations.
A client suffering from anxiety shouldn’t be recommended towards an energetic sativa, for example, as this will likely give them a bad case of paranoia, resulting in a negative experience that could send their business elsewhere. Likewise, a daytime smoker probably won’t be happy with a relaxing Indica that will put them to sleep. Budtenders need to keep up with the various strains that are in stock at all times and be able to direct their customers to the right product.
Budtender Presentation and Service
Of course, being knowledgeable about cannabis is a necessity, but a good budtender must also be able to convey this information in a manner that educates the customer. The best budtenders will be approachable and prepared to answer any question thrown their way. They should be able to present the information like a teacher, a quality that will put customers at ease and leave them confident they are in good hands.
Dispensaries can set themselves apart from the competition by choosing their budtenders wisely. It is important to hire budtenders who present themselves in a highly professional manner including down to their manners and clothing. When a customer buys cannabis from a store, they may have preconceived notions about the budtenders working there. By hiring knowledgeable, personable and professional budtenders, businesses can tackle negative stereotypes surrounding the newly emerging cannabis industry and improve customer satisfaction.
If you’ve been to a lot of cannabis dispensaries, you’ll know that some of them might feel like a drug dealer just leased a building and set up shop, business as usual. With legalization comes the opportunity to legitimize cannabis consumption to a degree not possible before, and many dispensaries are helping to change the perception of the industry by catering to more refined crowds with attractive shops and a professional atmosphere. A good team of budtenders can go a long way towards establishing a dispensary as an upscale business.
Overall, A great budtender is an invaluable asset to any dispensary, and staffing your business with them is your best bet at building lasting relationships with your customers. Budtenders with expansive knowledge of cannabis strains, effects, and dosage, as well as a professional and personable demeanor are essential to the success of a dispensary, and without them a business might suffer.
Dr. Hope Jones, chief scientific officer of C4 Laboratories, believes there are a number of opportunities for cannabis growers to scale their cultivation up with micropropagation. In her presentation at the CannaGrow conference recently, Dr. Jones discussed the applications and advantages of tissue culture techniques in cannabis growing.
Dr. Jones’ work in large-scale plant production led her to the University of Arizona Controlled Environment Agriculture Center (CEAC) where she worked to propagate a particularly difficult plant to grow- a native orchid species- using tissue culture techniques. With that experience in tissue culture, hydroponics and controlled environments, she took a position at the Kennedy Space Center working for NASA where she developed technologies and protocols to grow crops for space missions. “I started with strawberry TC [tissue culture], because of the shelf life & weight compared with potted plants, plus you can’t really ‘water’ plants in space- at least not in the traditional way,” says Dr. Jones. “Strawberries pack a lot of antioxidants. Foods high in antioxidants, I argued, could boost internal protection of astronauts from high levels of cosmic radiation that they are exposed to in space.” That research led to a focus on cancer biology and a Ph.D. in molecular & cellular biology and plant sciences, culminating in her introduction to the cannabis industry and now with C4 Labs in Arizona.
Working with tissue culture since 2003, Dr. Jones is familiar with this technology that is fairly new to cannabis, but has been around for decades now and is widely used in the horticulture industry today. For example, Phytelligence is an agricultural biotechnology company using genetic analysis and tissue culture to help food crop growers increase speed to harvest, screen for diseases, store genetic material and secure intellectual property. “Big horticulture does this very well,” says Dr. Jones. “There are many companies generating millions of clones per year.” The Department of Plant Sciences Pomology Program at the Davis campus of the University of California uses tissue culture with the Foundation Plant Services (FPS) to eliminate viruses and pathogens, while breeding unique cultivars of strawberries.
First, let’s define some terms. Tissue culture is a propagation tool where the cultivator would grow tissue or cells outside of the plant itself, commonly referred to as micropropagation. “Micropropagation produces new plants via the cloning of plant tissue samples on a very small scale, and I mean very small,” says Dr. Jones. “While the tissue used in micropropagation is small, the scale of production can be huge.” Micropropagation allows a cultivator to grow a clone from just a leaf, bud, root segment or even just a few cells collected from a mother plant, according to Dr. Jones.
The science behind growing plants from just a few cells relies on a characteristic of plant cells called totipotency. “Totipotency refers to a cell’s ability to divide and differentiate, eventually regenerating a whole new organism,” says Dr. Jones. “Plant cells are unique in that fully differentiated, specialized cells can be induced to dedifferentiate, reverting back to a ‘stem cell’-like state, capable of developing into any cell type.”
Cannabis growers already utilize the properties of totipotency in cloning, according to Dr. Jones. “When cloning from a mother plant, stem cuttings are taken from the mother, dipped into rooting hormone and two to five days later healthy roots show up,” says Dr. Jones. “That stem tissue dedifferentiates and specializes into new root cells. In this case, we humans helped the process of totipotency and dedifferentiation along using a rooting hormone to ‘steer’ the type of growth needed.” Dr. Jones is helping cannabis growers use tissue culture as a new way to generate clones, instead of or in addition to using mother plants.
With cannabis micropropagation, the same principles still apply, just on a much smaller scale and with greater precision. “In this case, very small tissue samples (called explants) are sterilized and placed into specialized media vessels containing food, nutrients, and hormones,” says Dr. Jones. “Just like with cuttings, the hormones in the TC media induce specific types of growth over time, helping to steer explant growth to form all the organs necessary to regenerate a whole new plant.”
Having existed for decades, but still so new to cannabis, tissue culture is an effective propagation tool for advanced breeders or growers looking to scale up. In the next part of this series, we will discuss some of issues with mother plants and advantages of tissue culture to consider. In Part 2 we will delve into topics like sterility, genetic reboot, viral infection and pathogen protection.
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