Regardless of whether your grow is indoor or in a greenhouse, mold is a factor that all cultivators must consider.
After weeks of careful tending, pruning and watering to encourage a strong harvest, all cultivators are looking to sell their crop for the highest market value. A high mold presence, measured through a total yeast and mold count (TYMC), can cause a change of plans by decreasing crop value. But it doesn’t have to.
There are simple steps that any cultivator can take that will greatly eliminate the risk of mold in a grow. Below are some basic best practices to incorporate into your operation to reduce contaminants and mold growth:
Isolate dirty tasks. If you are cleaning pots, filling pots or scrubbing trimming scissors, keep these and other dirty tasks away from grow and process areas. Dirty tasks can contaminate the grow area and encourage mold growth. Set up a “dirty room” that does not share heating, ventilation and air conditioning with clean areas.
Compartmentalize the grow space. Mold can launch spores at speeds up to 55 miles per hour up to eight feet away without any air current. For this reason, if mold growth begins, it can become a huge problem very quickly. Isolate or remove a problem as soon as it is discovered- better to toss a plant than to risk your crop.
No drinks or food allowed. Any drinks or food, with the exception of water, are completely off limits in a grow space. If one of your employees drops a soda on the ground, the sugars in the soda provide food for mold and yeast to grow. You’d be surprised how much damage a capful of soda or the crust of a sandwich can do.
Empty all trash daily. Limiting contaminants in turn limits the potential for issues. This is an easy way to keep your grow clean and sterile.
Axe the brooms. While a broom may seem like the perfect way to clean the floor, it is one of the fastest ways to stir up dirt, dust, spores and contaminants, and spread them everywhere. Replace your brooms with hepa filter backpack vacuums, but be sure that they are always emptied outside at the end of the work day.
No standing water or high humidity. Mold needs water to grow, therefore standing water or high humidity levels gives mold the sustenance to sporulate. Pests also proliferate with water. Remove standing water and keep the humidity level as low as possible without detriment to your plants.
Require coveralls for all employees. Your employee may love his favorite jean jacket, but the odds are that it hasn’t been cleaned in months and is covered with mold spores. Clean clothing for your staff is a must. Provide coveralls that are washed at least once a week if not daily.
Keep things clean. A clean and organized grow area will have a huge impact on mold growth. Clean pots with oxidate, mop floors with oxidate every week, keep the areas in front of air returns clean and clutter-free, and clean floor drains regularly. The entire grow and everything in it should be scrubbed top to bottom after each harvest.
Keep it cool. Keep curing areas cool and storage areas cold where possible. The ideal temperature for a curing area is roughly 60 degrees and under 32 degrees for a storage area. Just like food, the lower the temperature, the better it keeps. High temperature increases all molecular and biological activity, which causes things to deteriorate faster than at cooler temperatures. However, curing temperature is a function of water activity more than anything.
Be Careful With Beneficials. Beneficial insects certainly have their place in the grow environment. However, if you have a problem with mold on only a small percentage of plants, any insect can act as a carrier for spores and exacerbate the problem. By the same token, pests spread mold more effectively than beneficials because they produce rapidly, where beneficials die if there aren’t pests for them to eat. It is best to use beneficials early in the cycle and only when necessary.
I have been studying microorganisms for over 35 years, and the elusive critters still fascinate me! Here in Microbiology 101, I write about the foundation of knowledge on which all microbiologists build. You may have a general interest in microbiology or have concerns in your operation. By understanding microbiology, you understand the diversity of microorganisms, their source, control of microorganisms and their importance.
The term microbiology covers every living being we cannot see with the naked eye. The smallest microbe is a virus. Next in size are the bacteria, then yeast and mold cells, and the largest microbes are the protozoans. The tiny structure of a virus may be important in the plant pathology of cannabis, but will not grow in concentrates or infused products. A virus is not living, until it storms the gate of a living cell and overtakes the functions within the cell. Viruses are the number one cause of foodborne illness, with the number one virus called Norovirus. Think stomach flu. Think illness on cruise ships. Viruses are a food service problem and can be prevented by requiring employees to report sickness, have good personal hygiene including good hand washing, and, as appropriate, wear gloves. Following Good Manufacturing Practices (GMPs) is critical in preventing the transfer of viruses to a product where the consumer can be infected.
The largest microbial cell is the protozoan. They are of concern in natural water sources, but like viruses, will not grow in cannabis products. Control water quality through GMPs, and you control protozoans. Viruses and protozoans will not be further discussed here. Bacteria, yeast and mold are the focus of further discussion. As a food microbiologist, my typical application of this information is in the manufacturing of food. Because Microbiology 101 is a general article on microbiology, you can apply the information to growing, harvesting, drying, manufacture of infused products and dispensing.
It is not possible to have sterile products. Even the canning process of high temperature for an extended time allows the survival of resistant bacterial spores. Astronauts take dehydrated food into space, and soldiers receive MREs; both still contain microbes. Sterility is never the goal. So, what is normal? Even with the highest standards, it is normal to have microbes in your products. Your goal is to eliminate illness-causing microorganisms, i.e. pathogens. Along the way, you will decrease spoilage microbes too, making a product with higher quality.
Yeast and mold were discussed on CIJ in a previous article, Total Yeast & Mold Count: What Cultivators & Business Owners Need to Know. Fuzzy mold seen on the top of food left in the refrigerator too long is a quality issue, not a safety issue. Mold growth is a problem on damaged cannabis plants or cuttings and may produce mycotoxin, a toxic chemical hazard. Following Good Agricultural Practices (GAPs) will control mold growth. Once the plant is properly dried, mold will not grow and produce toxin. Proper growing, handling and drying prevents mycotoxins. Like mold, growth of yeast is a quality issue, not a safety issue. As yeast grow, they produce acid, alcohol and carbon dioxide gas. While these fermentation products are unwanted, they are not injurious. I am aware that some states require cannabis-infused products to be alcohol-free, but that is not a safety issue discussed here.
What are the sources of microorganisms?
People. Employees who harvest cannabis may transfer microorganisms to the plant. Later, employees may be the source of microbes at the steps of trimming, drying, transfer or portioning, extract processing, infused product manufacture and packaging.
Ingredients, Supplies and Materials. Anything you purchase may be a source of microorganisms. Procure quality merchandise. Remember the saying, “you get what you pay for.”
Environment. Starting with the outdoors, microbes come from wind, soil, pests, bird droppings and water. When plants are harvested outdoors or indoors, microbes come from the tools and bins. Maintain clean growing and harvesting tools in good working condition to minimize contamination with microbes. For any processing, microbes come from air currents, use of water, and all surfaces in the processing environment from dripping overhead pipes to floor drains and everything in between.
In Part 2 I will continue to discuss the diversity of microorganisms, and future articles will cover Hazard Analysis and Critical Control Points (HACCP) and food safety in more detail. What concerns do you have at each step of operations? Are you confident in your employees and their handling of the product? As each state works to ensure public health, cannabis-infused products will receive the same, if not more, scrutiny as non-cannabis food and beverages. With an understanding and control of pathogens, you can focus on providing your customers with your highest quality product.
The Craft Cannabis Alliance is a values-driven industry association whose mission is to define, promote, and celebrate authentic Oregon craft cannabis. Though it has only recently launched, it already counts many of Oregon’s most important local brands among its members, and looks poised to help lead a craft cannabis movement both within the industry and among consumers.
When recreational cannabis was originally legalized in Oregon,according to the Portland Mercury, there were residency requirements for obtaining a license, but in 2016 those rules were removed. In the wake of that decision, Adam J. Smith, founder and executive director of theCraft Cannabis Alliance, saw the prospect, and, increasingly, the reality of out-of-state businesses with deep pockets buying up local cannabis businesses, expanding out of state brands into the market, or financing new brands here. It was quickly apparent to Smith that the big money threatened to overwhelm the market, push Oregon-owned companies off of shelves and eventually dominate Oregon’s much-anticipated export market. In May, drawing on his experience as an organizer and drug policy reform advocate, as well as several years working in with Oregon craft industries, he launched the Craft Cannabis Alliance.
Smith has a long history of taking aim boldly at seemingly implacable interests. In 1998, Smith launched the Higher Education Act Reform Campaign (HEA Campaign), which successfully won back the right to federal financial aid for students with drug convictions. That campaign led to the founding ofStudents for Sensible Drug Policy, now the world’s largest student-led drug policy reform organization, active in more than 40 states and 26 countries. Since then, he has participated in a number of public policy and civic engagement campaigns and organizations, serving on the founding boards of the League of Young Voters and the Oregon Bus Project. He’s also written for dozens of publications on drug policy.
The Craft Cannabis Alliance is a membership-based industry association of cannabis businesses with like-minded values, who believe that cannabis is, in fact, Oregon’s next great craft industry. And they want to make sure that means something. We sat down with Smith to learn more about his organization and why he wants to fight big cannabis.
CannabisIndustryJournal: How exactly do you define craft cannabis?
Adam Smith: In the beer industry, the Brewers Association defines a craft producer as one who produces fewer than 6 million barrels per year, and is not more than 25% owned by a larger brewer. And that’s fine for beer, but with cannabis just emerging from its own prohibition, there are broader concerns that we believe a craft industry needs to be responsive to. So we’re less concerned with the size of a company’s production than how it’s producing that product, and how it’s contributing to communities and a healthy industry.
Here in Oregon, there’s a core of the cannabis industry that cares deeply about people, place, planet, and plant. As someone who has spent considerable time writing about and organizing around ending the drug war, it is important to me that cannabis’ first foray into the post-prohibitionist world is not only successful, but that it reflects a shared set of values. When I started talking with people in the industry who take their values seriously, I asked a lot of questions. I wanted to go from “we know it when we see it” to something that could be defined and therefore legitimately promoted. Pretty soon, it became clear that there were six major areas of agreement.
Ethical employment practices
Substantial local ownership
Meaningful participation in the movement to end the disastrous drug war.
The first three requirements, clean, sustainable, and ethical employment practices, are pretty obvious core values for craft producers, and we believe for many Oregon consumers as well.
Substantial local ownership, particularly in a place like Oregon, is an essential component of what the Alliance is trying to organize and represent. We grow some of the finest cannabis in the world in Oregon, and while we’re a small market, we know that eventually, probably sooner than most people realize, the federal walls will come down and we’ll be able to export our products to other states and internationally. At that point, Oregon will be home to a multi-billion dollar industry. The question then, is who will own that?
We are already seeing big out of state and international companies and investment groups buying up brands or starting their own brands here. With tens of millions of dollars behind them, they have the marketing and distribution muscle to push locally owned companies, even those producing superior product, off of shelves. And if foreign-owned companies are dominating shelf space here when those federal walls crumble, those are the companies that will own the export market, and who will ultimately own the Oregon Cannabis brand globally. And if that happens, we will never buy it back.
Southern Oregon, in particular, is a region that has seen little economic growth since the waning of the timber industry. The communities there have a huge stake in how this plays out. Will the cannabis industry build wealth, and economies, and institutions here? Or will Oregon become a low-wage factory for out of state and international corporations.
Beyond local ownership, community engagement is another important component of craft cannabis. The industry, which still faces PR challenges, many of them well earned, needs ambassadors who can demonstrate what a healthy cannabis industry looks like, and who will build the relationships and the credibility necessary to gain the loyal support of their neighbors, local media, and public officials.
Finally, participation in the anti-drug war movement, beyond the self interest of simply opening up the next market, is a must. This industry stands atop a mountain of eighty years of ruined lives and destroyed communities. If you are in the industry, and you are not looking for ways to support drug policy reform, you are profiteering, plain and simple. The drug war is teetering on the brink of the dustbin of history, but it is not over yet. The very existence of a legalized industry is the product of decades of work by many, many individuals, most of whom will never earn a dime from the end of prohibition, and never intended to. We view a healthy legal cannabis market as an important platform for social progress on this front, and we are going to use it.
CIJ: Doesn’t capitalism guarantee that the big money will win out? That striving to maintain one’s values in the face of competition that is laser-focused on profits above all else is inefficient and doomed to failure?
Adam: Believe me, when your name is Adam Smith, you spend a lot of time thinking about capitalism. Let’s be clear, our members are committed to profits. We just don’t believe that nihilism is going to be a profitable strategy in Oregon cannabis, nor should it be. Our goal is to monetize our values by offering a win-win proposition to consumers, opinion makers, political leaders, and everyone else who will benefit from a visionary, responsible, and successful Oregon industry feeding into the local economy.
The choice is not between capitalism and something else. It is between an extractive model of capitalism and a value-adding model of capitalism. Between an industry that seeks to bleed value from the earth, and communities, and employees, and consumers, and one that adds value to everything it touches at every level while producing the best cannabis in the world.
In the end, consumers are the key. If we can be the coolest thing happening in Oregon cannabis, if we can bring consumers into this movement, we will succeed. There’s simply no reason for Oregonians to be buying cannabis grown by a Canadian bank account, even if it’s physically produced here. That is SO not cool. And what’s cool in Oregon will be what’s cool and in demand nationally and internationally as we are able to expand the reach of the legal Oregon industry.
We believe that offering the world’s best cannabis, grown responsibly, by Oregonians who are actually committed to the environment, to their communities, and to social justice is a going to be a powerful marketing proposition here. More powerful than having a famous person on your label or weak attempts at greenwashing.
Within the authentic Oregon craft universe will be super high-end products, as well as more value-oriented offerings, and everything in between. We’re going to make it easy for Oregonians to recognize and support the kind of industry that we’d all like to see here.
CIJ: Why do you think this could be successful in Oregon? Is the industry receptive to this idea?
Adam: Not only the industry, but the media, elected officials, and most importantly, we believe, consumers.
Oregon sees itself, not unjustifiably, as the birthplace of the craft movement in America. Our craft beer, artisan wine, and craft distilling industries are world-class by any standard, and are very well supported locally. Include in that list our local food scene and the myriad artisans of all stripes who ply their trades in the region, and it’s pretty obvious that there will be strong support for a values-driven, locally owned cannabis industry.
Craft is about people making something they love, as well as they possibly can, for themselves and their friends, and to share with others who will love it too. It’s not a coincidence that those products tend also to be of the highest quality.
The key, as I’ve mentioned, is for craft cannabis is to build a partnership with consumers. Let them know who we are, and what we are trying to build, which is an authentic, and authentically Oregon craft cannabis movement.
There are quite a lot of people in the Oregon industry who share this vision, including many of the best and most important brands in the state. The are people who got into cannabis for the right reasons, with a craftsperson’s dedication to quality and mindfulness on all fronts. To truly be a craftsperson is not only to make an exceptional product, but also to be cognizant of the historical and social context of your craft, with a respect for what has come before, and a commitment to setting an example for those who will follow.
Those are our people, and they are well represented in the industry here. Our goal is to organize them and help insure a path to their success.
CIJ: Tell us about how you are educating the industry, consumers and political leaders.
Adam: Well, we launched at the end of May, from the stage at the Cultivation Classic, which highlights and honors the best cannabis in Oregon, grown sustainably and regeneratively. That was a great opportunity for us to introduce ourselves to the part of the industry that we’re targeting, and we were very grateful to Jeremy Plumb of Farma, who is also an Alliance member, and who puts on that incredible event, for that stage.
Right now, we are still a manageable group, size-wise, and we are doing a lot of personal networking in the industry, seeking out the right people to join us. It’s been a lot of “who do we like and trust, who is making great product?” As a long-time organizer, I believe in starting out by putting together the strongest possible group of leaders who are also good people and fun to work with. I’d say that that’s going very well, since we have just an incredible group, who I am honored to stand beside. Over the past several weeks, as we have started to be a bit outward facing, we have had more and more folks in the industry reaching out to us, rather than the other way around. So we’re in a great spot to grow.
On the political side, we really launched the project at the very end of the most recent state legislative session, and so we purposely did not engage that process this year. But over the past several months, we have been seeking out and introducing ourselves to key public officials. Their response has been extremely positive. Here we are, a group of companies who are substantially locally owned, and committed to being transparent and accountable to the health of our employees, our communities, and our state. In an industry that is still very chaotic, and not well organized, with plenty of shady players, I think that they see us as a compelling partner going forward.
CIJ: Some of these standards seem pretty difficult to quantify. How do you expect to judge new member businesses?
Adam: Well, in the areas of clean product, sustainable methods, and ethical employment practices, we will adopt standards being developed and promulgated by third-party certification efforts such as Resource Innovation Institute (energy, water, carbon footprint) and the Cannabis Certification Council (“organic” and fair labor standards). There are others as well, some that exist, things like Clean Green, and some that are still in development. We are beginning to meet with these folks to gauge where they are, and to give input on their standard-setting processes. In the end, hopefully within the next year as more third-party standards come online, we will choose which of those standards to adopt or accept.
Community engagement and anti-drug war participation will be things that we undertake as an alliance, as well as providing support for our members to do these things individually behind their brands
As for “substantial local ownership” we are already discussing the parameters of what that means. Certainly, here in Oregon, there is a need for outside capital. We are not going to fund a robust industry, especially one that is prepared to take advantage of the coming interstate and international markets, with all local funding.
That said, there is a huge difference between having an out of state partner who owns a piece of a local business, and having an out of state or international corporate overlord with a 90-100% ownership stake. And the distinction is important for the future of the industry and for Oregon’s economy.
The temptation is to set the bar at 50% in-state ownership. But what if you are a large cannabis brand, selling in four or five or six states, that is 35% or 40% Oregon-owned? That would likely meet the definition of “substantial.” It is a difficult line to draw, in some sense, but not impossible. As we move forward, we will develop guidelines on this, and we will have a membership committee that can look at an individual company and say “yes, you are substantially Oregon-owned” or “not you are not” as well as a process in place to insure fairness in that decision. Right now, every cannabis company in the Alliance is majority Oregon-owned, and I would expect that to continue except in very rare cases.
CIJ: One of your standards for membership requires participation in the movement to end the drug war. Some might see this as a given, but could you shed some light on this?
Adam: As I mentioned earlier, we see reform movement participation as a moral imperative, and since a lot of my background is in drug policy reform, it’s important to me personally. As an alliance, we hope to partner with organizations like Students for Sensible Drug Policy and NORML, and within the industry with groups like the Minority Cannabis Business Association to both advocate for broad drug policy reform, and hopefully to provide opportunities and support for communities that have been most negatively affected by Prohibition. We believe that those of us participating in the legal, regulated cannabis market have both a responsibility and an opportunity to use our voices to point out the difference between the chaos, corruption, and violence of prohibition, and the the sanity, humanity, and opportunity of a post-prohibitionist world.
Demand for cannabis extracts, in particular vaping products, is at an all-time high. People want good oil, and they want to know something about the quality of it. It is therefore time to take a step back and consider the process from plant to cartridge. What is the current industry standard for cannabis extraction, what constitutes quality and where might we need to make some adjustments?
Right now, “clear” oil is hot. Customers have been led to believe that a pale gold extract is synonymous with the best possible cannabis concentrate, which is not necessarily the case. Producing a 95% pure THC extract with a translucent appearance is neither a great scientific feat nor a good representation of the whole cannabis flower. Moreover, it runs counter to the current trend of all-natural, non-processed foods and wellness products.
“My carrots are organic and fresh from the farmers market, my drink has no artificial sweeteners and my honey is raw, but my cannabis oil has undergone a dozen steps to look clear and still contains butane.”Cannabis is a fascinating plant. It is the basis of our livelihood, but more importantly, it enhances the quality of life for patients. The cannabis plant offers a plethora of medicinally interesting compounds. THC, CBD and terpenes are the most popular, but there are so many more. As of the most recent count, there are 146 known cannabinoids1. Cannabinoids are a group of structurally similar molecules2, including THC and CBD, many of which have shown biological activity3.
Then there are terpenes. These are the smaller molecules that give cannabis its distinct smell and flavor, over 200 of which have been identified in cannabis4. But wait, there’s more. The cannabis plant also produces countless other metabolites: flavonoids, alkaloids, phenols and amides5. All these components mixed together give the often-cited entourage effect6,7.
Current industry standards for cannabis oil extraction and purification stand in marked contrast to the complexity of the plant’s components. Due to an unsophisticated understanding of the extraction process and its underlying chemistry, cannabis oil manufacturers frequently produce oil of low quality with high levels of contamination. This necessitates further purifications and clean up steps that remove such contaminants unfortunately along with beneficial minor plant compounds. If one purifies an extract to a clear THC oil, one cannot also offer the full spectrum of cannabinoids, terpenes and other components. Additionally, claiming purities around 95% THC and being proud of it, makes any self-respecting organic chemist cringe8.
The labor-intensive, multi-step extraction process is also contrary to “the clean-label food trend”, which “has gone fully mainstream”9. Exposing the cannabis flower and oil to at least half a dozen processing steps violates consumer’s desire for clean medicine. Furthermore, the current practice of calling supercritical-CO2-extracted oils solvent-less violates basic scientific principles. Firstly, CO2 is used as a solvent, and secondly, if ethanol is used to winterize10, this would introduce another solvent to the cannabis oil.
We should reconsider our current extraction practices. We can offer cannabis extracts that are free of harmful solvents and pesticides, give a better, if not full, representation of the cannabis plant and meet the patients’ desire for clean medicine. Realizing extracts as the growth-driver they are11 will make us use better, fresher starting materials12. Understanding the underlying science and learning about the extraction processes will allow us to fine-tune the process to the point that we target extract customized cannabis concentrates13. Those, in turn, will not require additional multi-step purification processes, that destroys the basis of the entourage effect.
The cannabis industry needs to invest and educate. Better extracts are the result of knowledgeable, skilled people using precise instruments. Backroom extraction with a PVC pipe and a lighter should be horror stories of the past. And only when the patient knows how their medicine is made can they make educated choices. Through knowledge, patients will understand why quality has its price.
In short, over-processing to make clear oil violates both the plant’s complexity and consumers’ desires. Let us strive for pure extracts, not clear. Our patients deserve it.
 Prof. Meiri; lecture at MedCann 2017
 ElSohly, Slade, Life Sciences2005, 539
 Whiting, et. al.,JAMA.2015, 2456
 Andre, Hausman, Guerriero, Frontiers in Plant Science2016, 19
Clean Green Certified is a third-party certification program that incorporates aspects of the USDA’s National Organic Program (NOP), international organic programs and sustainable farming practices. Cannabis is not eligible for USDA organic certification because it is not a federally recognized crop, so Clean Green Certified is the closest certification nationally available. More than 200 cultivators are currently Clean Green Certified in California, Oregon, Washington, Colorado and Nevada.
Chris Van Hook, attorney and founder of Clean Green Certified, started the program in 2004 out of requests from growers to certify their cannabis as organic. Van Hook has decades of experience working in environmental law and USDA organic certifications. “About 95% of the Clean Green Certification is based on the USDA’s NOP,” says Van Hook. “The Clean Green Certified cannabis farmer would be eligible for an organic certification as soon as it becomes available, so we are helping the industry get accustomed to the regulations, inspections, and audits that come with getting organically certified.”
Getting Clean Green Certified requires an initial application. Upon inspection, Van Hook’s program examines all the inputs, including water and energy usage, nutrients, pesticides, and soil, along with inspecting the actual plants for agricultural vitality. “We follow the plants from seed to when it is harvested, checking for clean surfaces and containers, as well as drying, curing, trimming, and processing practices,” says Van Hook. “Just like organic farming, the cultivator needs to be an engaged manager and heavily involved with the plants. Much more monitoring is involved to prevent pest problems from getting out of control without using pesticides.”
The initial screening process takes into consideration traceability and legal compliance, which in cultivation and processing alike is an eligibility requirement. “We use USDA organic standards as guidance for processor facility reviews as well, which include concentrates and edibles manufacturers, breaking it down to labeling, food handling, standard operating procedures, mock recalls, and more,” says Van Hook.
“In a market so used to a lack of oversight, there definitely are some challenges, but we are bringing the necessary agricultural and food handling regulations into the cannabis industry,” adds Van Hook.
The option to grow organically and acquire a third party certification for it can benefit cultivators across the country looking to market their product as environmentally sustainable and pesticide-free.
Strictly Necessary Cookies
Strictly Necessary Cookie should be enabled at all times so that we can save your preferences for cookie settings.
We use tracking pixels that set your arrival time at our website, this is used as part of our anti-spam and security measures. Disabling this tracking pixel would disable some of our security measures, and is therefore considered necessary for the safe operation of the website. This tracking pixel is cleared from your system when you delete files in your history.
If you disable this cookie, we will not be able to save your preferences. This means that every time you visit this website you will need to enable or disable cookies again.