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CannaGrow Expo

The CannaGrow Expo is open to all, 18+, and is intended for cannabis growers, grow managers, dispensary owners, and grow enthusiasts to explore the latest cannabis cultivation technology, tools, and techniques.

CannaGrow Palm Springs will feature a selection of 35+ cultivation-focused educational sessions lead by world-class growers over two action-packed days, endless networking with cultivators from around the globe, and an expo hall packed with the latest tools & technology for growing cannabis.

The First Map of the Cannabis Genome

By Aaron G. Biros
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Sunrise Genetics, Inc., the parent company for Hempgene and Marigene, announced last week they have successfully mapped the cannabis genome. The genome map was presented at the 26th Annual Plant and Animal Genome Conference in San Diego, CA during the panel “Cannabis Genomics: Advances and Applications.”

According to CJ Schwartz, chief executive officer of Sunrise Genetics, the full genome map will allow breeders to develop strains using DNA sequence information to complement phenotyping. “In this way a breeding program can be guided by the breeder versus blindly as it is for just pheno-hunting,” says Schwartz. “At the DNA level, we can identify what version of a set of genes a plant contains, and make predictions as to the phenotype, without ever growing the plant. As we make more and more gene markers, we have more genes to track, and breeding becomes more rapid, efficient and precise.” Schwartz says this is essential for breeding stable, repeatable plants. “A commercial strain will be grown in different environments, with solid genetics, the phenotype will mostly stay true, a term we call Genetic Penetrance.”

Ancestry-painted chromosomes for marijuana Image: Chris Grassa / Sunrise Genetics

Determining a plant’s DNA can be extremely valuable and completing the map of the genome now makes this more precise. It can serve as a point of proof, according to Schwartz, providing evidence of lineage in a breeding project and confirming the uniqueness and identity of a strain. The genome map can also allow breeders to select specific genes to develop custom strains. And in addition to all that, it provides legal protection. “Knowing your plants DNA code is the first step to being able take action so no one else can protect it,” says Schwartz. “Well documented evidence in the development of a customized strains is essential to maintaining control of your plant and keeping those you distrust (big pharma) away, many of which have minimal interest in the whole plant anyhow.”

CJ Schwartz, chief executive officer of Sunrise Genetics

Schwartz says this project took them roughly 18 months to wrap up. “One of the biggest problems was just finding the right plants to grow,” says Schwartz. “In addition we used some emerging technologies and those had some challenges of their own.” According to Schwartz, a key aspect in all this was finding the right collaborators. They ended up working with CBDRx and the plant biology department at the University of Minnesota, where a DEA-licensed lab has been researching cannabis since 2002. “George Weiblen’s group at UM has been working on Cannabis for over a decade,” says Schwartz. “During that time they did repeated selfing to make highly inbred marijuana and hemp lines. The lines were instrumental in deterring the physical order of the genes.”

Ancestry-painted chromosomes for hemp Image: Chris Grassa / Sunrise Genetics

After finishing up some experiments, they expect to get the genome map published on public domain in less than a year, opening up their research to the general public and allowing breeders and growers to use their data. “This will be a very significant publication,” says Schwartz. “The genome assembly allows for the assimilation of all the currently incompatible Cannabis genome sequence datasets from academia and private companies,” says Schwartz. “Joining datasets from 1000s of strains, and from every continent, will generate an essential public resource for cannabis researchers and aficionados alike.” With a tool like this, we can discover the genes that help produce desirable traits. “This project is a major accomplishment for cannabis, bringing it on par with other important crops, providing a scientific tool to unravel the secrets of this incredibly versatile plant,” says Schwartz.

Sunrise Genetics is assisting cannabis businesses in evaluating strains and developing breeding programs, working with a number of customers currently to develop strains for many different specific traits. “We have the expertise to help select parental strains and guide the selection process at each generation using genotype and phenotype information,” says Schwartz. “Essentially we are bringing all the tools any modern plant breeder would use for improving strawberries to cannabis.”

photo of outdoor grow operation

How to Reduce Mold & Contaminants in Indoor, Greenhouse and Outdoor Grows

By Ketch DeGabrielle
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photo of outdoor grow operation

Controlling your grow environment doesn’t start when you germinate your first seeds, it starts before you build your grow. There are steps you can take that will have a significant impact on mold growth and contamination, and these will vary based on the grow environment you choose.

Below is a roadmap to where each grow environment stands in terms of mold and contamination risk, and simple steps you can take to mitigate these factors.

Outdoor

The benefits of an outdoor grow are significant – using natural sunlight to grow plants is both inexpensive and environmentally sound. However, it allows the least amount of control and makes plants susceptible to weather conditions and outdoor contaminants including dust, wind, rain and insects. Depending on humidity and precipitation levels, mold can be a big issue as well.

Outdoor growing has obvious benefits, such as natural sunlight, but may also require extra steps to prevent contamination

When selecting an outdoor area for a cannabis farm, there are two important factors to consider: location and neighboring farmland. Geographical environments and sub-climates vary and once you have purchased land, you are committed, so be sure to consider these factors prior to purchase.

While arid desert climates have abundant sunlight and long growing seasons, flat, dry lands are subject to dust-storms, flash floods and exceedingly high winds that can damage crops. Conversely, more protected areas often have high humidity and rainfall late in the season, which can create huge issues with bud rot and mold. Neighboring farms also have an impact on your grow, so be sure to find out what they cultivate, what they spray, their harvest schedule and how they run their operation. Large farming equipment kicks up a lot of contaminant-laden dust and can damage crops by displacing insects to your farm if they harvest before you. Pesticide drift is also a major issue as even tiny amounts from a neighbor’s farm can cause your crops to fail testing, depending on what state you are in.

With outdoor grow environments always at the mercy of Mother Nature, any cultivator is wise to control contamination potential on the ground. Cover soil and protect your crop by planting cover crops and laying plastic mulch on as much ground as reasonable. In many cases it makes sense to irrigate uncultivated parts of your farm just to keep dust down.

Greenhouse

Greenhouses are the future of cannabis cultivation. They allow growers to capture the full spectrum and power of the sun while lessening environmental impact and operating expenses, while still being able to precisely control the environment to grow great cannabis. With recent advancements in greenhouse technology such as automated control systems, positive pressure, geothermal heating or cooling and LED supplemental lighting, greenhouses are the future. However, older or economy greenhouses that take in unfiltered air from outside still have a medium amount of mold and contamination risk.

A greenhouse grow facility

Before building your greenhouse, study the area while taking into account climate, weather conditions and sun exposure. Excessively windy areas can blow in contaminants, and extremely hot climates make cooling the greenhouse interior a challenging and costly endeavor.

There are several simple operational tactics to reduce contaminants in a greenhouse. Add a thrip screen to keep insects out, thoroughly clean pad walls with an oxidizing agent after each cycle, and keep plants at least 10 feet from pad walls. Plan to flip the entire greenhouse at once so that you can clean the greenhouse top to bottom before your next crop. A continuous harvest in your greenhouse allows contaminants to jump from one plant to the next and reduces the ability to control your environment and eliminate problems at the end of a cycle. Lastly, open shade curtains slowly in the morning. This prevents temperature inversion and condensation, which can cause water drops to fall from the ceiling and transfer contaminants onto plants below.

Indoor

An indoor environment offers ultimate control to any grow operation. Cultivators can grow high-quality cannabis with the smallest potential for yeast and mold growth. Unfortunately, indoor environments are extremely expensive, inefficient and environmentally costly.

Talltrees
An indoor cannabis operation set up (Image: Tall Trees LED Company)

With indoor grow environments, keeping mold and contaminants at bay comes down to following a regimented plan that keeps all grow aspects clean and in order. To keep your grow environment clean, change HVAC filters multiple times a month. It’s also important to install HEPA filters and UV lights in HVAC systems to further reduce contamination threats. Clearly mark air returns if they are near the ground and keep those areas free of clutter. They are the lungs of your grow. Also, stop using brooms in the grow space. They stir up a lot of contaminants that have settled to the floor. Instead, use HEPA filter backpack vacuums or install a central vacuum system. Set up a “dirty room” for anything messy on a separate HVAC system, and be sure to thoroughly clean pots after every harvest cycle.

Learn more about reducing mold and contaminants in an indoor or greenhouse grow in another article from our series: 10 Ways to Reduce Mold in Your Grow.

10 Ways to Reduce Mold in Your Grow

By Ketch DeGabrielle
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Regardless of whether your grow is indoor or in a greenhouse, mold is a factor that all cultivators must consider.

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

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:

  1. 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.
  2. 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.
  3. 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.
  4. 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.
  5. 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.
  6. 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.
  7. 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.
  8. 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.
  9. 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.
  10. 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.

Sunrise Genetics Partners With RPC, Begins Genetic Testing in Canada

By Aaron G. Biros
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Sunrise Genetics, Inc., the parent company of Marigene and Hempgene, announced their partnership with New Brunswick Research & Productivity Council (RPC) this week, according to a press release. The company has been working in the United States for a few years now doing genomic sequencing and genetic research with headquarters based in Fort Collins, CO. This new partnership, compliant with Health Canada sample submission requirements, allows Canadian growers to submit plants for DNA extraction and genomic sequencing.

Sunrise Genetics researches different cannabis cultivars in the areas of target improvement of desired traits, accelerated breeding and expanding the knowledge base of cannabis genetics. One area they have been working on is genetic plant identification, which uses the plant’s DNA and modern genomics to create authentic, reproducible, commercial-ready strains.

Matt Gibbs, president of Sunrise Genetics, says he is very excited to get working on cannabis DNA testing in Canada. “RPC has a long track record of leadership in analytical services, especially as it relates to DNA and forensic work, giving Canadian growers their first real option to submit their plant samples for DNA extraction through proper legal channels,” says Gibbs. “The option to pursue genomic research on cannabis is now at Canadian cultivator’s fingertips.”

Canada’s massive new cannabis industry, which now has legal recreational and medical use, sales and cultivation, previously has not had many options for genetic testing. Using their genetic testing capabilities, they hope this partnership will better help Canadian cultivators easily apply genomic testing for improved plant development. “I’m looking forward to working with more Canadian cultivators and breeders; the opportunity to apply genomics to plant improvement is a win-win for customers seeking transparency about their Cannabis product and producers seeking customer retention through ‘best-in-class’ cannabis and protectable plant varieties,” says Gibbs. The partnership also ensures samples will follow the required submission process for analytical testing, but adding the service option of genetic testing so growers can find out more about their plants beyond the regular gamut of tests.

RPC is a New Brunswick provincial research organization (PRO), a research and technology organization (RTO) that offers R&D testing and technical services. With 130 scientists, engineers and technologists, RPC offers a wide variety of testing services, including air quality, analytical chemistry of cannabis, material testing and a large variety of pilot facilities for manufacturing research and development.

They have over 100 accreditations and certifications including an ISO 17025 scope from the Standards Council of Canada (SCC) and is ISO 9001:2008 certified. This genetic testing service for cannabis plants is the latest development in their repertoire of services. “This service builds on RPC’s established genetic strengths and complements the services we are currently offering the cannabis industry,” says Eric Cook, chief executive officer of RPC.

Total Yeast & Mold Count: What Cultivators & Business Owners Need to Know

By Parastoo Yaghmaee, PhD
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Editor’s note: This article should serve as a foundation of knowledge for yeast and mold in cannabis. Beginning in January 2018, we will publish a series of articles focused entirely on yeast and mold, discussing topics such as TYMC testing, preventing yeast and mold in cultivation and treatment methods to reduce yeast and mold.


Cannabis stakeholders, including cultivators, extractors, brokers, distributors and consumers, have been active in the shadows for decades. With the legalization of recreational adult use in several states, and more on the way, safety of the distributed product is one of the main concerns for regulators and the public. Currently, Colorado1, Nevada and Canada2 require total yeast and mold count (TYMC) compliance testing to evaluate whether or not cannabis is safe for human consumption. As the cannabis industry matures, it is likely that TYMC or other stringent testing for yeast and mold will be adopted in the increasingly regulated medical and recreational markets.

The goal of this article is to provide general information on yeast and mold, and to explain why TYMC is an important indicator in determining cannabis safety.

Yeast & Mold

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

Yeast and mold are members of the fungi family. Fungus, widespread in nature, can be found in the air, water, soil, vegetation and in decaying matter. The types of fungus found in different geographic regions vary based upon humidity, soil and other environmental conditions. In general, fungi can grow in a wide range of pH environments and temperatures, and can survive in harsh conditions that bacteria cannot. They are not able to produce their own food like plants, and survive by breaking down material from their surroundings into nutrients. Mold cannot thrive in an environment with limited oxygen, while yeast is able to grow with or without oxygen. Most molds, if grown for a long enough period, can be detected visually, while yeast growth is usually detected by off-flavor and fermentation.

Due to their versatility, it is rare to find a place or surface that is naturally free of fungi or their spores. Damp conditions, poor air quality and darker areas are inviting environments for yeast and mold growth.

Cannabis plants are grown in both indoor and outdoor conditions. Plants grown outdoors are exposed to wider ranges and larger populations of fungal species compared to indoor plants. However, factors such as improper watering, the type of soil and fertilizer and poor air circulation can all increase the chance of mold growth in indoor environments. Moreover, secondary contamination is a prevalent risk from human handling during harvest and trimming for both indoor and outdoor-grown cannabis. If humidity and temperature levels of drying and curing rooms are not carefully controlled, the final product could also easily develop fungi or their growth by-product.

 What is TYMC?

TYMC, or total yeast and mold count, is the number of colony forming units present per gram of product (CFU/g). A colony forming unit is the scientific means of counting and reporting the population of live bacteria or yeast and mold in a product. To determine the count, the cannabis sample is plated on a petri dish which is then incubated at a specific temperature for three to five days. During this time, the yeast and mold present will grow and reproduce. Each colony, which represents an individual or a group of yeast and mold, produces one spot on the petri dish. Each spot is considered one colony forming unit.

Why is TYMC Measured?

TYMC is an indicator of the overall cleanliness of the product’s life cycle: growing environment, processing conditions, material handling and storage facilities. Mold by itself is not considered “bad,” but having a high mold count, as measured by TYMC, is alarming and could be detrimental to both consumers and cultivators. 

Aspergillus species niger
Photo: Carlos de Paz, Flickr

The vast majority of mold and yeast present in the environment are indeed harmless, and even useful to humans. Some fungi are used commercially in production of fermented food, industrial alcohol, biodegradation of waste material and the production of antibiotics and enzymes, such as penicillin and proteases. However, certain fungi cause food spoilage and the production of mycotoxin, a fungal growth by-product that is toxic to humans and animals. Humans absorb mycotoxins through inhalation, skin contact and ingestion. Unfortunately, mycotoxins are very stable and withstand both freezing and cooking temperatures. One way to reduce mycotoxin levels in a product is to have a low TYMC.

Aspergillus flavus on culture.
Photo: Iqbal Osman, Flickr

Yeast and mold have been found to be prevalent in cannabis in both current and previous case studies. In a 2017 UC Davis study, 20 marijuana samples obtained from Northern California dispensaries were found to contain several yeast and mold species, including Cryptococcus, Mucor, Aspergillus fumigatus, Aspergillus niger, and Aspergillus flavus.3 The same results were reported in 1983, when marijuana samples collected from 14 cannabis smokers were analyzed. All of the above mold species in the 2017 study were present in 13 out of 14 marijuana samples.4

Aspergillus species niger, flavus, and fumigatus are known for aflatoxin production, a type of dangerous mycotoxin that can be lethal.5 Once a patient smokes and/or ingests cannabis with mold, the toxins and/or spores can thrive inside the lungs and body.6, 7 There are documented fatalities and complications in immunocompromised patients smoking cannabis with mold, including patients with HIV and other autoimmune diseases, as well as the elderly.8, 9, 10, 11

For this reason, regulations exist to limit the allowable TYMC counts for purposes of protecting consumer safety. At the time of writing this article, the acceptable limit for TYMC in cannabis plant material in Colorado, Nevada and Canada is ≤10,000 CFU/g. Washington state requires a mycotoxin test.12 California is looking into testing for specific Aspergillus species as a part of their requirement. As the cannabis industry continues to grow and advance, it is likely that additional states will adopt some form of TYMC testing into their regulatory testing requirements.

References:

  1. https://www.colorado.gov/pacific/sites/default/files/Complete%20Retail%20Marijuana%20Rules%20as%20of%20April%2014%202017.pdf
  2. http://laws-lois.justice.gc.ca/eng/acts/f-27/
  3. https://www.ucdmc.ucdavis.edu/publish/news/newsroom/11791
  4. Kagen SL, Kurup VP, Sohnle PG, Fink JN. 1983. Marijuana smoking and fungal sensitization. Journal of Allergy & Clinical Immunology. 71(4): 389-393.
  5. Centre for Disease control and prevention. 2004 Outbreak of Aflatoxin Poisoning – Eastern and central provinces, Kenya, Jan – July 2004. Morbidity and mortality weekly report.. Sep 3, 2004: 53(34): 790-793
  6. Cescon DW, Page AV, Richardson S, Moore MJ, Boerner S, Gold WL. 2008. Invasive pulmonary Aspergillosis associated with marijuana use in a man with colorectal cancer. Diagnosis in Oncology. 26(13): 2214-2215.
  7. Szyper-Kravits M, Lang R, Manor Y, Lahav M. 2001 Early invasive pulmonary aspergillosis in a leukemia patient linked to aspergillus contaminated marijuana smoking. Leukemia Lymphoma 42(6): 1433 – 1437.
  8. Verweii PE, Kerremans JJ, Voss A, F.G. Meis M. 2000. Fungal contamination of Tobacco and Marijuana. JAMA 2000 284(22): 2875.
  9. Ruchlemer R, Amit-Kohn M, Raveh D, Hanus L. 2015. Inhaled medicinal cannabis and the immunocompromised patient. Support Care Cancer. 23(3):819-822.
  10. McPartland JM, Pruitt PL. 1997. Medical Marijuana and its use by the immunocompromised. Alternative Therapies in Health and Medicine. 3 (3): 39-45.
  11. Hamadeh R, Ardehali A, Locksley RM, York MK. 1983. Fatal aspergillosis associated with smoking contaminated marijuana, in a marrow transplant recipient. Chest. 94(2): 432-433.
  12. http://apps.leg.wa.gov/wac/default.aspx?cite=314-55-102
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Medical Cannabis & The Vernacular Of Maturity

By RJ Starr
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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.

Protecting Your Cannabis Plant IP

By Brian J. Amos, Ph.D, Charles R. Macedo, M.S
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You’ve bred a new strain of cannabis, or perhaps discovered an excellent new hybrid outgrowing the other plants in your cannabis plot. Can you claim the new plant as yours and legally protect it? The short answer is potentially yes. The long answer follows below:

Plant Patents


Since a 1930s’ Act passed by Congress, the US government has permitted a person land, and (ii) asexually reproduces that plant, to apply for a Plant Patent. If granted, the Plant Patent will protect the patent holder’s right to “exclude others from making, using, selling, offering for sale and importing the plant, or any of its parts.” In other words, if you have a Plant Patent, you have a monopoly on that particular plant and its progeny plants, as long as they are asexually reproduced (for example, from cuttings – i.e. a clone). There is a hole in the protection – once you’ve sold or given anyone the plant they can use the seed or pollen from it without your permission.

Originally this sort of coverage was thought to be useful for things like new apple varieties, which are often from spontaneous new mutants found by farmers in their orchards (i.e. “cultivated land”). But is it possible this coverage can be extended to cannabis plants? The answer is yes. Unlike the traditional refusal of the US Patent & Trademark Office (USPTO) to register “offensive” or “disparaging” trademarks on moral grounds, US patent law does not have any well-established “morality exception.” And, indeed, Plant Patents have already been issued for cannabis strains. In December 2016, US Plant Patent No. 27,475 was issued for a cannabis plant called “Ecuadorian Sativa.” This plant is said to be distinct in its exceptionally high level of a particular terpene (limonene) at levels of 10 to 20 times the usual range, and is a single variety of a cross between what are commonly named as Cannabis sativa and Cannabis indica.

How do you get a Plant Patent? Firstly – a Plant Patent is not automatically granted. The application has to be written correctly, and the USPTO will examine it to determine if your plant is new and distinct (non-obvious) from other known varieties, that it is described as completely as is reasonably possible, and that it has been asexually propagated. In addition, if the plant was “discovered” as opposed to “invented” then the USPTO will need to be shown that it was found in a cultivated area. A plant discovered simply growing wild cannot be patented. If you pass these hurdles, you will have a Plant Patent that lasts for 20 years.

Utility Patent
 

Another type of patent that can protect your new cannabis plant, and much more besides that, is a Utility Patent. Utility Patents have a longer history than Plant Patents in the US and, while they may be harder to obtain, a Utility Patent gives you broader protection than a Plant Patent. A Utility Patent can cover not only the plant itself, but if properly written can also cover parts of the plant, uses of the plant, methods used to create the plant, methods for processing the plant, and even edibles (like brownies) that contain an extract from that plant. If granted, the Utility Patent will protect your right, for 20 years from the date you filed the application, to “exclude others from making, using, offering for sale, or selling the invention throughout the United States or importing the invention into the United States.” An additional protection is that if the invention you claim in the patent is a “process,” you can assert the Utility Patent to exclude others from importing into the United States any products made by that process. Of course, given that present U.S. federal law regards cannabis as a DEA Schedule 1 drug, this importation blocking right is currently irrelevant. Nevertheless, it should be remembered that utility patents have a 20-year term, and Federal law may shift during that time.

Utility Patents are harder to obtain than Plant Patents. The USPTO will examine your application to determine whether what you are claiming protection on (for example: plants, cells, methods or processes) is new and non-obvious, does not cover a naturally occurring product or process, and is fully described. The simple description used in a Plant Patent is not enough for the more rigorous description needed in a Utility Patent. In addition, meeting the “enablement requirement” of a Utility Patent may require you to have the plant strain deposited with a recognized depository which will maintain that specimen plant – and you must agree that the public is permitted to access that deposit if a Utility Patent is granted to you.

So has the US government granted any patents on cannabis plants? Yes it has, multiple patents. A recent example is US Utility Patent No. 9,095,554 granted to Biotech Institute LLC (Los Angeles), which covers hybrid cannabis plants of a particular type with a CBD content of greater than 3%, as well as methods of breeding or producing them. Biotech Institute was also granted claims in the same Utility Patent for cannabis extracts from those plants, and edibles containing the extract. In this case, the plant samples were deposited with the NCIMB, which is a recognized depository in Aberdeen, Scotland. It should be noted that while the depository has to be internationally recognized, it does not have to be in the US. Another corporation, GW Pharma Ltd. (a UK firm), was early in the game and, according to USPTO records, has more than 40 U.S. Utility Patents issued relating to cannabis in some form or another, the earliest dating back to 2001.

Plant Variety Protection Act


A third type of protection is potentially available under the Plant Variety Protection Act (PVPA) if you breed a new cannabis plant by sexual reproduction. Colloquially, this protection is more often known as “breeder’s rights” and the USDA administers it. This right is not mutually exclusive with other protections – in 2001 the U.S. Supreme Court ruled that that sexually reproduced plants eligible for protection under the PVPA are also eligible for Utility Patents.

In theory, obtaining a PVPA certificate is a relatively straightforward procedure for seed reproduced plants, which are new, distinct, uniform and stable. If you are granted a PVP certificate it will last for 20 years from the grant date. You can bring a civil action against someone who sells, offers for sale, delivers, ships or reproduces the covered plant. So have any PVPA Certificates been issued for new cannabis strains? We have reviewed the USDA published certificates for the last two years and have not found any. Why is this? One obstacle may be what happens after you file your application. The US code governing these certificates states that a seed sample “will be deposited and replenished periodically in a public repository.” However, the government body that administers the PVPA, the USDA, specifically requires that all applicants submit a seed sample of at least 3,000 seeds with an 85% or more germination rate within 3 months of filing the application. Sending cannabis seeds in the mail to a federal agency – that’s a deterrent given current uncertainty. Ironically, the location that the seeds must be sent to is Fort Collins in Colorado, a state where cannabis has been decriminalized. The USDA’s published PVPA guidance describes courier delivery of the seed sample to the Fort Collins repository, but does not mention hand delivery of the seed samples. We contacted the seed depository and were informally told that seed samples can be deposited by hand delivery – but this still entails handing over to a federal agency actual seeds of a plant which is a DEA Schedule 1 drug. In any event, no PVPA Certificates that have yet been issued for new cannabis strains. It is possible that a new federal administration might deschedule cannabis, permitting an easier route to PVPA coverage. But for the present at least, PVPA protection may be hard to obtain.

Notice

The views expressed herein are those of the authors and do not necessarily represent those of Amster, Rothstein & Ebenstein, LLP, or its clients. Nothing in this article is to be construed as legal advice or as a substitute for legal advice.

How To Select The Best Monitoring System For Your Cannabis Greenhouses

By Rob Fusco
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Maintaining an environment that supports cultivation and keeps plants healthy is not an easy task. In cannabis growing, there are a variety of factors that greenhouse managers and personnel must monitor to ensure that their plants are in a healthy environment that fosters growth and development. Temperature, humidity, lighting and CO2 levels are a few of the conditions that need to be tailored to each cannabis greenhouse operation. However, it can be difficult to constantly monitor the status of your equipment and the greenhouse environment, especially after hours or during the off-season.

A remote monitoring system that’s properly selected and installed can help greenhouse managers keep their cannabis plants healthy, multiply their yields and increase return on investment. This type of system also helps operators identify patterns and trends in environmental conditions and get insight into larger issues that can prevent problems before they arise.

Cloud-based monitoring system base unit in weatherproof enclosure

Here are some tips on key conditions to monitor and what you need to consider when selecting a monitoring system for your cannabis greenhouse operation:

Temperature

Temperature plays a crucial role in any cannabis grow operation. The climate in your greenhouse must be warm enough to nurture photosynthesis and the growth of cannabis plants. Setting the incorrect temperature will significantly impact the potential yield of the plant and the rate at which it develops. A temperature too low will slow the growth of the cannabis, but too hot can lead to heat stress for your plants. The ideal temperature for a standard greenhouse is between 70 and 80 degrees Fahrenheit. However, depending on the stage of plant and desired growth densities, the temperature of the greenhouse needs to be adjusted accordingly.

Humidity Levels

Humidity directly affects plant photosynthesis and transpiration, so controlling humidity is vital in greenhouse growing. The ideal relative humidity (RH) for cannabis growth is around 60%. A low humidity level can cause water to evaporate too quickly for photosynthesis, while a humidity level that is too high can cause poor growth and possible mold and fungal disease. Monitoring the moisture content in the air of your greenhouse will help the plants during the transpiration process, increasing absorption of nutrients and overall health of the cannabis. 

Lighting

Your cannabis may be getting an abundance of natural light during the summer months, but maintaining adequate sunlight during the winter months can be a challenge. As a solution to this, many greenhouse managers equip their facilities with additional lights to supplement natural light during off-seasons or off-hours. To achieve the best possible yield, a cannabis plant in the budding stage should receive twelve hours of light each day, while other stages could require additional lighting. For example, the growth stage could require your cannabis to be exposed to sunlight for up to eighteen hours a day.

CO2 Levels

Like any other plant, cannabis requires CO2 to breathe. Greenhouse managers must set and monitor the CO2 levels in their facility to make sure that there is an adequate amount for the plants to develop, grow and be healthy. The amount of carbon dioxide required for your cannabis depends of the size of the facility and the amount of light the plants are receiving. However, a standard grow area for cannabis can maintain a CO2 range from 1000 to 1500 parts per million (PPM). A level below that threshold can result in slower growth of the plants, while a level above would lead to unused and wasted CO2.

Soil moisture sensor

Irrigation and Soil Moisture

One way to ensure a good yield from your cannabis is to water it regularly and monitor your soil moisture. Overwatering your plants can have the same effect, if not worse, than letting the soil become too dry. Plants’ roots need oxygen to survive, unlike leaves that breathe CO2, and when the soil is waterlogged the roots can’t provide their function. The lack of oxygen interferes with the roots’ nutrient uptake and photosynthesis causing the cannabis plant to wilt. The exact moisture content of the soil depends on the size of your greenhouse, temperature and humidity. Whether you hand water or are using a drip irrigation system, being aware of your soil moisture is vital to the long-term health of your cannabis.

Air Circulation

Your greenhouse environment should mimic the ideal conditions in which cannabis plants flourish. With an indoor facility, you have the ability to control air circulation by venting hot air out and blowing fresh air in. Creating a circulation of air inside your greenhouse will increase your cannabis plant’s growth speed and yield. Additionally, an exhaust system helps control the temperature and humidity, while also preventing the invasion of mold and pests that thrive in hot, stagnant air.

Greenhouse Security

When growing something of value, like cannabis, there will always be a threat of intruders. Whether your greenhouse is in a populated area or around hungry wildlife, any intruder could be detrimental to your overall yields and profit. Remote monitoring systems can give you peace of mind and instantly alert you when there is an unwanted presence in your greenhouse.

Knowing all the possible threats to your cannabis greenhouse helps you evaluate your specific needs, and ultimately identify the proper remote monitoring system.

Selecting the Right Monitoring System

Other factors to consider when choosing a monitoring system right for your operation include:

  • Base unit and sensors
  • Wireless or hardwired sensors
  • Communications to your site (Phone, cellular, Wi-Fi, etc.)
  • Alarm notification
  • Programming and status checks
  • Data logging
  • Return on investment

Base Units and Sensors

Each condition in your greenhouse that you want to monitor requires its own input on the base unit of the monitoring system. You must match your needs with the number of inputs available. A good fit for a smaller cannabis greenhouse may be a lower-cost, non-expandable monitoring system. However, larger facilities have many monitoring points and more people to alert when there’s a problem. If your cannabis operation is poised for growth, purchasing an expandable system could add value to the initial purchase because you wouldn’t have to replace your entire system in the future.

Your monitoring system should also have an internal rechargeable battery backup to ensure continuous monitoring and alerts in the event of a power outage. It is also recommended to have each base unit in a sheltered enclosure to protect it from moisture, dirt and other hazards.

Placement of sensors is also crucial. For example, temperature sensors in your greenhouse should be placed throughout the facility. They should be next to your thermostat and in the center of your greenhouse, preferably away from direct sunlight.

Wireless or Hardwired Sensors

Remote monitoring systems offer the option to have sensors hardwired directly to the base unit or sensors wirelessly connected. A hardwired monitoring system connects the sensors to the base device with wires. Generally, trenching long distances for wires is time consuming and costly. So alternatively, a wireless system uses built-in radio transmitters to communicate with the base unit. Some monitoring systems can accommodate a combination of hardwired and wireless sensors.

Communications to Your Site

Monitoring devices that use cellular communications must be registered on a wireless network (like Verizon or AT&T) before you can send or receive messages. Because cellular devices perform all communications over a wireless network, it is important that there be sufficient signal strength at the greenhouse. It is a good idea to check the signal quality in the area before purchasing a cellular product. If the cellular network has less than desirable coverage, it is possible to install an external antenna to help increase cellular signal.

Alarm Notifications

When monitoring systems identify a change in status, they immediately send alerts to people on the contact list. If you don’t want all of your personnel to receive notifications at the same time, certain devices can be programmed to send alerts in a tiered fashion. It is important to consider the reach of the communications, so that you’ll be notified regardless of your locations. Multiple communications methods like phone, email and text provide extra assurance that you’ll get the alert. Also, note of the number of people the system can reach and if the system automatically cycles through the contact list until someone responds. Make sure the system allows for flexible scheduling so that it doesn’t send alarms to off-duty personnel.

Programming and Status Check

If you’re responsible for maintaining a commercial greenhouse facility, you want a system that will provide real-time status of all monitored conditions on demand. There are a few different ways to access your sensor readings. Options include calling to check status, viewing a web page, either on a local network or on the cloud, or accessing the information via an app on your mobile device. With a cloud-based system, the devices supervise themselves. This means if the internet or cellular connection goes down, the device will send an alarm to alert the appropriate personnel.

If you don’t select a cloud-based system, you will be limited to logging in through a local area network, which will allow you to make programming changes, access status conditions and review data logs. If internet connectivity is not available at your location, you will want to choose a cellular or phone system rather than Ethernet-based option.

Data Logging

Sample greenhouse monitoring data log

Data history is valuable in identifying patterns and trends in your cannabis greenhouse conditions. Manually monitoring and recording environmental parameters takes a significant amount of personnel time and detracts from other important workplace demands. However, many monitoring systems automatically save information, recording tens of thousands of data points, dates and times. Cloud-based logging provides an unlimited number of records for users to view, graph, print and export data trends.

Analyzing data samples may lend insight to larger issues and prevent problems before they arise. For example, if the data log shows power fluctuations occurring at a regular time, it could be indicative of a more serious problem. Or, if the data shows signs of a ventilation fan or supplementary lighting beginning to malfunction, they can be repaired or replaced before total failure occurs.

Return On Investment

When deciding how much you should pay for a remote monitoring system, tally up the entire cost, fully installed with additional peripherals and sensors and any labor fees for installation. Then consider the value of your cannabis plant inventory and greenhouse equipment. Finally, factor in the cost of downtime, should an environmental event shut down your operation for a period of time.

Final Thoughts

Choosing the right greenhouse monitoring system and sensors could mean the difference between life and death for your cannabis plants. Understanding the conditions you need to watch and monitoring systems’ capabilities are they best way to protect your investment.