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Hop Latent Viroid (HLVd) & Pathogen Diagnostics: A Comprehensive Overview

By Tassa Saldi, Ph.D.
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Hop latent viroid (HLVd) has gained attention as the molecular cause of “dudding disease” and is causing significant economic losses in the cannabis industry.1,2 Estimates indicate that upwards of 4 billion dollars of market value are lost each year to this pathogen alone.3 The impact of HLVd on cannabis plants necessitates the development and implementation of effective pathogen diagnostics to mitigate its spread and minimize crop damage. With collaborative research efforts, we can gain valuable insights into the characteristics, spread, symptoms and preventive measures associated with HLVd in the cannabis industry.

Viroids: A Brief Overview

Figure 1: Virus vs Viroid

Viroids are unique infectious agents composed solely of genetic material, distinct from viruses. Unlike viruses, viroids lack a protective protein layer and solely rely on the host plant for replication and spread. Their stability and ability to persist in various environments make viroids a formidable threat to plant health.

Hop Latent Viroid: Origin and Global Spread

Hop latent viroid was initially identified in hop plants in 19884 and was found to be largely asymptomatic in this crop. Consequently, HLVd has spread worldwide, mostly unchecked by the hops industry. This pathogen has been identified on most continents and in some fields more than 90% of hops plants are infected.5 Hop latent viroid very likely jumped from hops into cannabis, due to similar genetics. The timing and mechanism of cross-species transmission to cannabis remains unknown, but the prevalence of HLVd suggests this viroid has been circulating within cannabis for an extended period. Data collected at TUMI Genomics indicates that HLVd is present in all states in the United States where cannabis is legal as well internationally including; Canada, the United Kingdom, France, the Netherlands, Thailand, Austria and Switzerland.

Symptoms and Impacts on Cannabis Plants 

Figure 2: HLVd Symptoms

HLVd exhibits a wide range of symptoms, which can vary from severe to subtle, affecting the growth, leaf development, flower quality and overall vitality of cannabis plants. Understanding these symptoms is crucial for timely diagnosis and appropriate disease management strategies.  However, HLVd can also present asymptomatically, especially in vegetative plants. The only way to determine if your plants are infected is by routine molecular testing.

Modes of Transmission

Mechanical Transmission: HLVd primarily spreads mechanically through contact with infected sap during activities like trimming and handling. Additionally, transmission through contaminated water and the potential role of insects, fungal pathogens and seeds in spreading HLVd have also been observed.

Seed Transmission: Although no published studies exist in cannabis describing the frequency of seed transmission, HLVd does transmit through seeds in hop plants at a rate of around 8%.7 Preliminary studies performed by TUMI Genomics in collaboration with EZ-genetics suggest cannabis seed transmission does occur at variable rates depending on strain and level of infection of the parent plants.

Water Transmission: It has also been observed that viroids are in high concentration in the roots8 and can move from the root into runoff water.9 Plants sharing a common water source with infected plants, such as recirculating water systems or flood and drain procedures, are at risk for transmission of the viroid.

Insect and Other Vector Transmission: The jury is still out as to whether or not insects can transmit HLVd. However, multiple viroids are transmitted via insects, so it is likely that HLVd insect transmission occurs. Recent studies also indicate that fungal pathogens, like Fusarium, can transmit viroid infections.6 While pathogenic fungus is a major concern for cannabis growers in its own right, limiting the prevalence and spread of fungal pathogens in your facility could help limit hop latent viroid transmission as well.

Therefore, implementing proper sanitation practices and limiting pest access can help minimize transmission risks.

Preventive Measures

Prevention plays a vital role in safeguarding cannabis crops against HLVd. The STOP program, developed by TUMI Genomics, offers a comprehensive approach that includes maintaining a Sterile environment, Testing mother plants regularly, Organizing the facility to minimize pathogen spread, and Protecting the facility’s borders from introduction of infected plant material, insects and contaminated water. More details on these preventative measures can be found here.

Pathogen Diagnostics

Protecting your plants from hop latent viroid requires accurate identification and removal of infected plants before the infection spreads to other plants. To accomplish this, several critical factors should be considered:

Type of test: HLVd and all viroids can only be detected by a molecular test (a test that detects the presence of DNA/RNA). Among common molecular tests, PCR is generally the most sensitive and accurate method. PCR can provide both a diagnosis and an approximate viroid level, allowing informed management decisions. Other types of molecular tests, such as LAMP and RPA, can formally be as sensitive as PCR, but the classic versions of these assays often suffer from false positive/negative results, reducing accuracy.

Figure 3: HLVd Levels and Distribution

Tissue type: An important consideration for HLVd detection is the plant tissue selected for testing, especially when identifying low-level or early infections when HLVd is not yet systemic. Studies completed by TUMI Genomics and others show root tissue contains the highest levels of HLVd and is the most reliable tissue for detection of viroid infection. While upper root tissue appears to contain the highest levels of viroid, roots from anywhere in the root ball are predictive of infection. Samples taken from the leaves/foliage tend to have lower levels of viroid and may produce false negative results.

Figure 4: Testing Schedule

Testing frequency: Routine pathogen testing is standard practice in general agriculture and is critical to maintain a healthy cannabis crop. Testing of mother plants every 4-6 weeks for economically critical pathogens (such as HLVd) will help ensure a successful run and a high-quality product.

Disinfection Methods

Studies have shown that viroids can remain infectious for longer than 24 hours on most common surfaces11 and 7 weeks in water.10 Making effective disinfection methods essential to limit the spread of HLVd. While common disinfectants like alcohol and hydrogen peroxide are ineffective against viroids, a 10% bleach solution has shown efficacy in destroying HLVd. Proper tool sterilization practices, such as soaking tools in bleach for 60 seconds, are crucial to prevent transmission during plant handling.

Figure 5: Bleach Dilution

Hop latent viroid poses a significant threat to the cannabis industry, leading to substantial economic losses. Timely and accurate pathogen diagnostics, along with stringent preventive measures, are essential for minimizing the impact of HLVd. Regular testing, proper disinfection protocols and adherence to pathogen prevention programs can help ensure the health and vitality of cannabis crops in the face of this global pandemic.

References

  1. Bektas, A., et al. “Occurrence of Hop Latent Viroid in Cannabis Sativa with Symptoms of Cannabis Stunting Disease in California.” APS Journals, 21 Aug. 2019, doi.org/10.1094/PDIS-03-19-0459-PDN.
  2. Warren, J.G., et al. “Occurrence of Hop Latent Viroid Causing Disease in Cannabis Sativa in California.” APS Journals, 21 Aug. 2019, doi.org/10.1094/PDIS-03-19-0530-PDN.
  3. Cooper, Benjie. “Hop Latent Viroid Causes $4 Billion Cannabis Industry Loss – Candid Chronicle.” Candid Chronicle – Truthful, Straightforward, Blunt Cannabis News, 16 Aug. 2021, candidchronicle.com/hop-latent-viroid-causes-4-billion-cannabis-industry-loss/.
  4. Puchta H, Ramm K, Sänger HL. The molecular structure of hop latent viroid (HLV), a new viroid occurring worldwide in hops. Nucleic Acids Res. 1988 May 25;16(10):4197-216. doi: 10.1093/nar/16.10.4197. PMID: 2454454; PMCID: PMC336624.
  5. Faggioli, Franceso, et al. “Geographical Distribution of Viroids in Europe.” Viroids and Satellites, 31 July 2017, www.sciencedirect.com/science/article/abs/pii/B9780128014981000449#bib47.
  6. Wei S, Bian R, Andika IB, Niu E, Liu Q, Kondo H, Yang L, Zhou H, Pang T, Lian Z, Liu X, Wu Y, Sun L. Symptomatic plant viroid infections in phytopathogenic fungi. Proc Natl Acad Sci U S A. 2019 Jun 25;116(26):13042-13050. doi: 10.1073/pnas.1900762116. Epub 2019 Jun 10. PMID: 31182602; PMCID: PMC6600922.
  7. Singh RP. The discovery and eradication of potato spindle tuber viroid in Canada. Virus disease. 2014 Dec;25(4):415-24. doi: 10.1007/s13337-014-0225-9. Epub 2014 Dec 2. PMID: 25674616; PMCID: PMC4262315.
  8. Jama, Aisha, et al. TUMI Genomics, Fort Collins, CO, 2022, Hop Latent Viroid Levels and Distribution in Cannabis Plant Tissue.
  9. Mackie AE, Coutts BA, Barbetti MJ, Rodoni BC, McKirdy SJ, Jones RAC. Potato spindle tuber viroid: Stability on Common Surfaces and Inactivation With Disinfectants. Plant Dis. 2015 Jun;99(6):770-775. doi: 10.1094/PDIS-09-14-0929-RE. Epub 2015 May 15. PMID: 30699527.
  10. Mackie AE, Coutts BA, Barbetti MJ, Rodoni BC, McKirdy SJ, Jones RAC. Potato spindle tuber viroid: Stability on Common Surfaces and Inactivation With Disinfectants. Plant Dis. 2015 Jun;99(6):770-775. doi: 10.1094/PDIS-09-14-0929-RE. Epub 2015 May 15. PMID: 30699527.
  11. Mackie AE, Coutts BA, Barbetti MJ, Rodoni BC, McKirdy SJ, Jones RAC. Potato spindle tuber viroid: Stability on Common Surfaces and Inactivation With Disinfectants. Plant Dis. 2015 Jun;99(6):770-775. doi: 10.1094/PDIS-09-14-0929-RE. Epub 2015 May 15. PMID: 30699527.

Navigating ISO/IEC 17025: Key Considerations for Cannabis Lab Software

By Montserrat Valdes
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In some states, cannabis testing facilities must undergo a third-party audit as a condition for obtaining their license. This may involve obtaining an ISO/IEC 17025 accreditation, which requires an evaluation from a qualified auditor. Alternatively, some laboratories may undergo a voluntary audit in certain regions to showcase their competency.

ISO/IEC 17025 is a widely acknowledged global benchmark for the expertise of testing and calibration laboratories. It establishes guidelines for laboratories to showcase their technical proficiency and ability to produce precise and trustworthy results.

For cannabis testing laboratories, obtaining ISO/IEC 17025 accreditation can offer a significant edge over their rivals. Such accreditation can result in several advantages, such as improved credibility, lower operational expenses, better conformity with local and state regulations and more efficient cross-border trade.

Integrating any standard into a regulated enterprise can be a complex undertaking and ISO/IEC 17025 is no exception. This standard puts a strong emphasis on quality by requiring laboratories to exhibit their impartiality, consistency and proficiency in all aspects of their work. Compliance with ISO/IEC 17025 necessitates timely and secure data retrieval, which is difficult to achieve without an information management system. Therefore, laboratories are increasingly turning to laboratory information management systems (LIMS) to modernize their practices, improve quality and meet ISO/IEC 17025 compliance standards. This article explores the critical factors that laboratory managers and staff should consider when selecting a LIMS that can help them fulfill the demands of ISO/IEC 17025. However, let’s first discuss the sections the ISO/IEC 17025 requirements are classified into.

ISO/IEC 17025 Requirements 

The ISO/IEC 17025 requirements are divided into five sections:

  1. General Requirements (Section 4): The fourth section of the ISO/IEC 17025:2017 standard details the general conditions that laboratories must follow. This section is primarily concerned with two critical aspects: impartiality and confidentiality. The impartiality requirement mandates laboratories to remain unbiased and take measures to prevent any potential bias. Similarly, the confidentiality requirement mandates that any information collected or generated during laboratory operations must be treated as private and safeguarded adequately to prevent unauthorized access. In instances where the release of confidential information is necessary by law or contract, the laboratory must communicate such release in an appropriate and timely manner.
  2. Structural Requirements (Section 5): In order to achieve the three key objectives of competence, impartiality, and consistent operations, this section addresses the fundamental organizational requirements of a laboratory. This entails being a legal entity with well-defined management responsibilities and documenting all activities, procedures and methods that fall within the standard’s scope. It highlights the importance of human resources by requiring laboratories to provide individuals with the necessary authority and resources to identify and rectify deviations from procedures, methods and the quality management system.
  3. Resource Requirements (Section 6): This section highlights the crucial role of resources in helping a laboratory achieve its objectives and maintain high standards. The section covers five areas, namely personnel, facility and working environment, equipment, metrological traceability and third-party products and services. To meet the standard’s requirements, personnel must demonstrate competence and impartiality, and lab personnel must record their current training status. Lab staff should also be provided with adequate resources to perform their duties. The facility and working environment should be suitable for generating accurate analytical results, while equipment must be properly calibrated and maintained. Metrological traceability is important to establish the connection between measurement results and a reference. Additionally, it is essential to thoroughly evaluate and approve third-party products and services to ensure their suitability. Clear communication of the requirements to third parties is also necessary in this regard.
  4. Process Requirements (Section 7): This section of the standard outlines 11 essential processes that aim to improve efficiency in laboratory operations. The processes include evaluating requests, tenders, and contracts, as well as selecting, verifying and validating methods. This section covers areas such as sampling, test item handling, and technical record-keeping. Other requirements include reporting outcomes, managing complaints and non-conforming work and controlling data and information management, which is especially important in the current digital era.
  5. Management System Requirements (Section 8): Section 8 deals with the laboratory’s management system, which must support consistent adherence to the standard’s requirements while ensuring the quality of the laboratory results. The section offers two options for the management system: Option A for new systems and Option B for existing systems driven by ISO 9001. The section consists of eight tasks which involve activities such as documenting the quality management system (QMS), identifying and addressing potential risks and opportunities, implementing measures for improvements and taking corrective actions. The final clause of the section involves conducting an internal audit of the laboratory’s management system to ensure it complies with the standard’s requirements.

Key Considerations for Selecting a Cannabis Lab Testing Software or LIMS

A cloud-based cannabis lab testing software to manage staff training with ease

Before selecting a Laboratory Information Management System (LIMS) for your cannabis testing lab, it is crucial to comprehend the informatics requirements of your laboratory. This involves understanding analysis necessities, limitations on reporting and data sharing, demands for instrument interfacing, requirements for sample barcoding and tracking, and procedures for ensuring quality assurance. Once all this is in place, a laboratory should take into account the following considerations:

Technology Considerations

When considering technology options, it’s important to consider future growth, data management and security and regulatory responsibilities. If a laboratory expects to grow in the future, it should consider investing in technologies that could enhance data management practices and security. The laboratory must also take into account how compliance with ISO/IEC 17025 will impact its future expansion and technological needs. To determine hardware and software investment, the laboratory must consider the type of work it will be performing and the associated regulatory and customer-centric responsibilities. It is also essential to identify the person or team responsible for addressing any potential technological problems, like setting up and maintaining software. If the laboratory wants to avoid procuring IT infrastructure and hiring IT personnel for maintaining LIMS, they should deploy a cloud-based LIMS that eliminates the need to have an elaborate IT infrastructure or dedicated IT staff. 

Cybersecurity Considerations

As the need for cybersecurity continues to grow in various industries, it has become apparent that cannabis testing laboratories are also vulnerable to cybersecurity threats regardless of size. Therefore, it is important to consider additional cybersecurity measures for these laboratories. Although the ISO/IEC 17025 standard does not explicitly mention cybersecurity, it does address the proper control of data in section 7.11. The standard emphasizes that LIMS, whether hosted locally or in the cloud, should be protected from unauthorized access and tampering. To comply with the ISO/IEC 17025 standard, laboratories should integrate cybersecurity considerations into their LIMS selection process. This can be achieved by creating a cybersecurity plan and including cybersecurity controls in the user requirements specification (URS) for LIMS software. Using a pre-built URS that includes cybersecurity controls can simplify the process of evaluating and selecting informatics software for laboratories. It is important to maintain the LIMS to ensure data and information integrity, recording any security breaches or non-conformance and addressing them promptly.

Regulatory Compliance Considerations

Meeting well-designed standards like ISO/IEC 17025 can enhance a laboratory’s operational culture and assure the reproducibility and accuracy of test results. If a laboratory is considering purchasing a LIMS solution and is unsure about how it can align with ISO/IEC 17025 and other regulations and standards, they can refer to resources like ASTM E1578-18 Standard Guide for Laboratory Informatics for guidance. The laboratory’s own requirements list can then be used as a checklist for vendors.

System Agility

A schematic representation of the various requirements of ISO 17025

Laboratories should consider if the LIMS under consideration can handle adding other types of testing, protocols, and workflows in the future. A flexible LIMS that allows for configuring various aspects of the system, such as sample registration screens, test protocols, labels, reports, and measurement units, is essential. When evaluating a vendor’s system, it’s important to understand what makes it user-configurable and how easy it is to make changes. Moreover, you must check if you can make changes in the system without requiring programming skills.

Cost Concerns

For a laboratory to have a clear understanding of what is included in the sales agreement, it is important to provide an estimate or statement of work (SOW) that outlines the details of the anticipated elements with as much specificity as possible. These elements should include the cost of licensing or subscription, core items needed to comply with regulations, the total cost of optional items, and the required services such as LIMS implementation, maintenance, technical support, training, product upgrades, and add-ons. There are two main pricing models for LIMS solutions: a one-time license fee and a subscription fee for cloud-hosted LIMS. If a laboratory has an internal IT team, it may prefer the one-time fee, but a SaaS subscription may be more cost-effective if they don’t have an IT team and want to save on hefty upfront cost. To accurately reflect the various pricing nuances, the estimate or SOW should specify whether the costs are for monthly or annual subscription services, hourly support and training, or a one-time fixed cost. 

The ISO/IEC 17025 accreditation offers several benefits, including improved credibility, lower operational costs, and better conformity with local and state regulations. However, integrating ISO/IEC 17025 requirements into a laboratory’s practices can be challenging. That’s where a cannabis lab testing software comes in. Laboratory managers and staff must consider several critical factors when selecting a LIMS to meet the requirements of ISO/IEC 17025. Key considerations for selecting a LIMS to meet ISO/IEC 17025 requirements with ease include technology considerations, cybersecurity considerations, regulatory compliance considerations, system agility and cost considerations. By meeting the compliance requirements of the ISO/IEC 17025 standard, cannabis testing laboratories can ensure the quality of their results and provide trustworthy services to their customers.

Building An Integrated Pest Management Plan – Part 6

By Phil Gibson
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This is the sixth and final in the series of articles designed to introduce an integrated pest management framework for cannabis cultivation facilities. To see Part One, an overview of the plan and pest identification, click here. For Part Two, on pest monitoring and record keeping, click here. For Part Three, on preventative measures, click here. For Part Four, control methods, click here. For Part Five, pest control action thresholds, click here.

This is Part 6: Emergency Response

When all prevention efforts have failed and your escalation procedures must be implemented, your emergency response document takes the stage.

Figure 1: We never want to see these at our door

It sounds obvious, but your emergency response document is your team’s guide to structure your response to an emergency. This begins with the simple definition of what is an emergency for your business. Emergencies can be to your personnel (personal injury) or your infrastructure (broken pipes/floods, power failure), and finally, a pest or pathogen outbreak that threatens the entire facility (insects/fungus, molds). Be sure to get the advice of your local service providers on the important things to put in to your response plan. This article is far from an exhaustive list, but it can get you started quickly with the basics for example purposes.

Personal Injury

Personal injuries are the events where you would call your local fire or police resources after stabilizing trauma events. Examples are chemical exposure, cuts, lacerations or broken bones from falls or crush events, burns, electric shock or earthquake or weather events. Injury response is to assess, call for medical assistance if appropriate, provide first aid and stabilize the injured, move to safety if possible, treat the injury and after the event is over and still fresh in everyone’s mind, consider what can be done to avoid the repeat of this or similar events in the future. Work those changes into your standard operating procedures.

Emergency Response to Facility Events

Figure 2: Cultivation IPM Prevention with Beneficial Insects

Whether the event is broken pipes or flooding, power failure or interruption, fire, HVAC failure or weather event, emergencies come in all sizes possible. It is likely that you built up a plan for emergency response as part of your city permitting process. Be sure to use those experts to refine your plan to include your operations.

Broken pipes start with the basics of turning off the source feeds and fixing the plumbing. If the water is actually rich fertilizer nutrients, cleaning and disinfectant is necessary as part of the drying and mop up process.

Environmental damage from fire, HVAC or weather event, lead to immediate treatment to try and save the current crops. This would include manual watering/misting, portable heater/cooler/CO2 burners. Verifying that backup power supplies turned on as planned. Are emergency fixes sufficient to power or run the systems necessary for plant life until power is returned?

Cultivation Events

Figure 3: Emergency Response Team Investigating Treatments

This entire paper has been about pest management, so emergency is expected to mean a pest or pathogen outbreak. We defined the escalated response actions up to the point of direct action and chemical interventions in chapters four and five. Your emergency response plan takes those actions to a site wide effort. Identify the pest and location/s that are causing the crisis, isolate the infested plants, remove the infected materials, clean, disinfect, and purify the contacted surfaces. Follow your plan and contact your emergency leaders.

Emergency Response Team

Your emergency response document identifies each of your team leaders and executives that are to be contacted in the event of an emergency. These leaders should be identified in the document with contact details and methods/on-call schedules for days and times of responsibility (after normal hours and holidays included). Someone is always on-call. The personal injury, facility and cultivation lead responsible should be identified and aware that they are the assigned resource and to treat emergencies as a priority.

Figure 4: IPM Preparation – Put It All Together for Success!

In Conclusion

We have covered an example integrated pest management philosophy from prevention through observation to limiting expansion to treatment and review. This continuous monitoring and learning process is a living document of standard operating procedures for any facility.

The attention of your team, their scouting observations, and attention to detail give you an opportunity to address and restrict any pest outbreak before it destroys your crop. Teach your operators well and reward them for their attention to your plan.

Clean and sterilize your facilities regularly. Preventing the emergence of pests will pay for the investment in a multitude of ways in both savings and profits. Plan your response thresholds and use traps to monitor your escalating protections. Target your treatments and remediations to match the threats to your harvests. As a last resort, apply approved chemical treatments judiciously to minimize the impact on non-target organisms.

Evaluate the effectiveness of your plan on an annual basis. Put your improvements to work for you to minimize your pest footprint and to increase your profits in every harvest.

For a copy of the complete Integrated Pest Management guide, download the document here.

Building An Integrated Pest Management Plan – Part 5

By Phil Gibson
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This is the fifth in a series of articles designed to introduce an integrated pest management framework for cannabis cultivation facilities. To see Part One, an overview of the plan and pest identification, click here. For Part Two, on pest monitoring and record keeping, click here. For Part Three, on preventative measures, click here. For Part Four, control methods, click here. Our final chapter, Part Six, discussing emergency response, comes out next week to wrap it all up.

This is Part 5: Pest Control – Taking Action

Previous chapters have covered the many preparations you can take to protect your facilities from pest attacks and outbreaks before they get started. This chapter will summarize the concepts of pest control thresholds and the actions you can take for the painful event when you surpass those limits (and various examples). The Integrated Pest Management (IPM) recommendations provide you with a framework for these plans.

Figure 1: Cleaning regimen, the heart of successful operations – no biofilm buildups

Preventative actions are part of your regular site operations; in other words, they are how you avoid problems before they happen. Just to hit this action one more time: cleaning must be fundamental to your facility. Water sanitation and changing filters must be done on schedule and frequently to avoid biofilm build up and nasty self-multiplying eco-systems.

For each of the rooms in your facility, identify the acceptable tolerance level for each type of pest that you may encounter. Define the intervention levels per room: preventative, direct action and escalated direct action. Follow your predefined procedures and defend your facility. Let’s cover high, medium and low tolerance example responses.

High Threshold for Tolerance

For example, the impact on your plants, your profits and your yields from the discovery of a white fly fluttering inside of one of your flower rooms may be very small. If this presence is late in your harvest cycle, your tolerance of this discovery may be very high. Your team could take preventative actions to clean the room more aggressively or to check your traps more frequently, but you are probably not going to want to invest in aggressive actions at that time in the harvest cycle.

Move from passive observation to the shake test. With sticky traps in place, shake or brush your plants. Do you see the bug counts increase on your test sheets?

Figure 2: Thrip Evidence c/o UC ANR Publication 7429

As that infestation grows, you may set a threshold for direct action (i.e. 5-10 flies per trap per week). If you reach that level, implement a treatment action with a non-chemical microbial biofungicide to stop growth in the roots or neem oil as a direct chemical action.

When you reach your escalated threshold of 10-20 flies per trap or direct plant damage is apparent, an infestation is more serious. In that event, you may choose to take steps to directly reduce the pest population with knock down sprays of approved direct chemical pesticides like citric acid or insecticidal soaps. Be sure to use your Personal Protective Equipment (PPE) for breathing and contact safety if you get into this situation.

Medium Threshold for Tolerance

Depending on the timing in your harvest cycle, the discovery of fungus gnats in your grow room may trigger a medium level alarm for you. Is the location, a small example with a minimal frequency? Is this addressable with additional attention to cleaning the area and longer dry periods in the irrigation or is this the beginnings of an infestation? Fungus gnats feed off of fungus or organic matter in soil triggered from an overly moist root environment. You may choose to react with immediate cleaning at the first existence in a room. Or you could set your “Medium” level alert status to be additional sticky trap distribution at the first visible gnat. If those counts reach 10-20 gnats per sticky trap per week, begin your foliar spray regimen with Zerotol or the equivalent.

Figure 3: Fungus Gnats

If these counts do not respond to your treatment, meaning that the next sticky trap count reaches beyond 20+ gnats per trap or visible direct plant damage, then institute your root drench protocol with a solution of BActive 1-2 times per week until the problem is under control and the counts are reduced. If the growth continues, look to approved pesticides in your area (as an example, AzaGuard Asadirectin).

Low Threshold for Tolerance

Alternatively, you may have a unified air circulation system due to facility limitations. Your air circulation may be shared across all of your mother plants, clones, veg and flowering plant areas. In that case, any presence of an airborne fungal infection like powdery mildew would have a very low tolerance of acceptance. Selective de-leafing of the infection and increased airflow are your first defense. Any visible presence beyond that would trigger a low threshold alert and immediately start a preventative action, such as carefully removing the infected plant material much wider than a few leaves and treating the area with foliar sprays like Zerotol (hydrogen peroxide plus).

If the penetration continues or expands, treatment would escalate to minimal risk pesticide follow up and observation. Chemical oils or citric acid might be in your mix in this case.

Figure 4: Powdery mildew in cannabis – Ryan Douglas Cultivation LLC

Finally, if repetitive treatments once a week are not turning the tide, increasing to once per day or even once per ON/OFF lighting cycle until the infection is controlled. At this point, you may decide to strip the room down and start over. Clearly the choice to “throw in the towel” is a total loss of the crop, but it may be the best option relative to minimal yields and failed flowers that will not sell.

Pest Control Actions

Our Integrated Pest Management recommendations paper gives you examples of what to consider for plans with white flies, fungus gnats, root aphids, powdery mildew and biofilm on plumbing or surfaces. These follow the preventative action, direct action, escalated direct action and pesticide approaches for each example. These are options to plan for water sources, root treatment, tunneling, crawling and flying phases.

In summary this week

As covered, preventative measures are your best defense. Hire expert consultants and plan these well. Escalate your response based on your scouting activity and your plan. Add your sticky traps, de-leafing, root drench, foliar sprays or knock down sprays as defined by your pest population control actions document.

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

In our final chapter, Emergency Response, we will review control thresholds and example plans for a range of problems from biofilm build up to white flies and more.

Our final chapter after will describe emergency response framework and reviewing your complete plans. See you next week.

The Distressed Cannabis Business: An Alternative to Bankruptcy

By Paula Durham, Scott E. Evans
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Bankruptcy is Not an Option

Bankruptcy courts do not provide protection to cannabis and cannabis-related businesses.Bankruptcy can be a very helpful tool for a distressed business. Bankruptcy allows a business to stop collection actions, discharge certain debts, cancel unfavorable contracts and provides breathing room to restructure the business.

What if your cannabis operation is struggling or failing – file for bankruptcy, right? Not so fast. Despite cannabis being legalized or decriminalized for certain activities at the state level, it remains illegal at the federal level. Therefore, the bankruptcy court will not provide protection to cannabis and cannabis-related businesses (CRB).

Alternatives to Bankruptcy

A State Court receiver may be the best alternative when bankruptcy is not an option.Enter the state court receivership. Receivership is an equitable remedy that is often employed as an alternative to a bankruptcy proceeding. A receivership can address business insolvency or can be a temporary remedy during legal proceedings between disputing business partners, with control of the enterprise hanging in the balance.

In either scenario, the court appointed receiver takes control of the business and must assess the posture of the business and determine the best path forward. The receiver’s options run the gamut from operating the company as is, restructuring operations to maximize profit or closing shop and liquidating the business as a whole or in pieces. The receiver has a fiduciary responsibility to determine the option that best satisfies creditors, similar to duties required of a trustee in a bankruptcy.

The importance of having a receiver well-versed in the cannabis industry cannot be overstated.Distressed cannabis companies are often prime candidates for receivership. Cannabis is a burgeoning industry with huge growth and profit potential. However, worlds have collided in the Green Rush, where business-minded individuals, often with little knowledge of cannabis, have partnered with individuals well-versed in cannabis culture, cultivation and consumption, but with little experience operating a business. Add a dash of complex state laws and regulatory drama in the form of the federal/state divide on legality, a dollop of fraud potential due to the largely all-cash nature of the business and you’ve created the perfect recipe for insolvency, litigation or both. In these often-chaotic conditions it is easy for a cannabis company to become unprofitable. A receiver can add significant value by stabilizing the business while the litigation proceeds or while developing a restructuring plan. In either case the goal of a receivership is to maximize the value of a business for the benefit of its stakeholders.

If you are considering restructuring options for your cannabis operation, a receivership can be an excellent choice. However, a cannabis receivership is not for the faint of heart. There are two significant areas that distinguish cannabis receiverships from receiverships involving non-cannabis businesses: First, the complex regulatory environment and second, banking. The importance of having a receiver well-versed in the cannabis industry cannot be overstated. Making a mistake in these areas can cause more harm than good. 

Complex Regulatory Environment

Cannabis operations are subject to a complicated regulatory framework that varies by state as well as by type of legalization (medical versus adult use cannabis). Receivers unfamiliar with the cannabis industry and the associated regulatory framework will be behind the curve on day one.

Upon appointment over a cannabis entity a receiver becomes responsible for the regulatory posture of that entity.Regulatory hurdles begin at the outset of a receivership. Although receivership is an excellent restructuring option for cannabis operators in distress, regulations surrounding the authorization requirements for those operating the business on a day-to-day basis (including receivers) vary by state. Some states, but not all, even have specific regulations for receiverships.

For example, the rules and regulations for cannabis operators in Colorado administered by the Colorado Marijuana Enforcement Division (MED) include provisions for receiverships. Specifically, the MED requires court appointees, including receivers, to register with the State Licensing Authority as Temporary Appointee[s] of the Court within seven days of appointment.

Similarly, Washington State cannabis regulations directly address receiverships. Specifically, Title 314 allows receivers or trustees to operate a licensed cannabis business, but the receiver must be qualified by the Washington State Liquor Control Board (LCB). Qualification requirements include  active status on the LCB preapproved receiver list or submission of an application to serve as a receiver for a licensee within two days of appointment. Furthermore, to serve as a receiver of a Washington state cannabis licensee the receiver must meet residency requirements.

Conversely, the Arizona cannabis laws and rules do not specifically address cannabis receiverships. Nevertheless, Arizona does require anyone volunteering or working at a medical or recreational cannabis dispensary to be registered with the Arizona Department of Health Services as either a Dispensary Agent (DA) or a Facility Agent (FA). Therefore, a receiver appointed over a licensed cannabis business in Arizona must obtain the applicable registration upon appointment in order to take control of the licensed entity in a compliant manner.

The fun doesn’t stop after the initial appointment hurdles are cleared. The regulatory environment across the country is a patchwork of complex laws. States that have legalized or decriminalized cannabis on some level have instituted often complex rules surrounding the cultivation, manufacture, wholesale and retail sale of cannabis. Even seemingly simple concepts such as the definition of cannabis are not so simple in some states. For example, Massachusetts includes cannabidiol (CBD) in its definition of cannabis while Arizona does not.

Some states, like California, do not allow the sale of cannabis licenses. Other states, like Colorado, allow for the transfer of commercial cannabis licenses. In a turnaround situation it is particularly important to understand the options available to liquidate a licensee’s assets.

Similarly, many, but not all states have rules requiring cannabis product testing by accredited laboratories prior to retail sale. Most states require THC potency testing, while others (like California and Colorado) also require testing for pesticides and toxins. Conversely, testing for toxins and contaminates is voluntary in Florida. Product testing is expensive and time-consuming, and operators must have a comprehensive system in place to ensure compliant product is available for sale to retail and wholesale customers.

Even taxes are different for cannabis businesses. A receiver must understand and be able to manage a cannabis business in order to comply with and minimize taxes under the infamous 280e regulations of the U.S. tax code.

Upon appointment over a cannabis entity a receiver becomes responsible for the regulatory posture of that entity. Accordingly, the receiver must ensure that any regulatory deficiencies are identified and corrected in order to ensure compliant operation.

We’ve highlighted just a few of the myriad of regulatory concerns facing a receiver upon appointment. It is critical to engage a receiver who has experience working under the complex cannabis regulatory structure for your distressed cannabis operation.

Banking

One of the most important things a receiver does upon appointment is to identify and secure the assets of the entity in receivership, including cash. This normally involves opening a bank account in the name of the receivership entity that is controlled solely by the receiver and moving cash assets into the controlled account.

This typically ordinary task is not so easy with a cannabis operation. Because cannabis remains illegal under federal law, processing funds derived from the sale of cannabis (even sales that are legal at the state level) can be considered by the Department of Justice (DOJ) as aiding and abetting criminal activity or money laundering.A receiver must negotiate the complex banking regulations regarding cannabis businesses and effectively manage the large amounts of cash, which may not be bankable.

The Financial Crimes Enforcement Network (FinCen) issued guidance in 2014 that cleared the way for financial institutions to service canna-businesses (2014 Guidance). The 2014 Guidance requires financial institutions who choose to provide services to CRBs to design and implement a thorough customer due diligence review that includes, in part, analyzing the licensing of the entity, developing an understanding of the business operations of the entity, and ongoing monitoring of the entity. In addition, financial institutions are required to file a Suspicious Activity Report (SAR) for every transaction they process for a CRB, should they choose to accept the business.

While this is a positive step forward, it is a heavy compliance burden that comes at a cost. Naturally, compliance costs incurred by banks to service cannabis operators are passed on to the customer; fees of $2,500 per month per account are not uncommon. The high compliance costs, coupled with the significant regulatory risk, keeps most banks out of the cannabis market; thus, making it hard, but not impossible, for a receiver appointed over a cannabis operation or CRB to obtain banking.

While banking options do exist, the reality is that most canna-businesses operate on a cash basis. Distressed cannabis operations may not have the cashflow to afford banking services, at least at the outset of a receivership. Further compounding the banking problem, some banks that are open to cannabis are not open to receiverships, further limiting banking options.

A receiver therefore must be prepared to quickly secure all cash assets of the receivership entity and ensure appropriate internal controls are in place to control cash on an ongoing basis.

Cannabis has been legalized or decriminalized in a majority of U.S. states but remains illegal at the federal level. Therefore, federal bankruptcy protection is not generally an option available for a distressed canna business. However, not all is lost because state receiverships offer an excellent restructuring option for distressed cannabis operations.

An Inside Look at the Creation and Growing Popularity of Solventless Cannabis Products

By Tim Nolan
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A top product trend this year is the rise of solventless cannabis products, according to recent statistics from cannabis market analyst firm BDSA. In fact, from June 2021 to June 2022, BDSA research also showed that the category grew an average of 132% each month.

Copperstate Farms

Nearly all cannabis products start with cannabis concentrates, which are made with a solvent that contains the desirable compounds from cannabis. Solventless concentrates however are made from the cannabis flower without the use of any chemicals and are becoming popular among businesses and consumers. This broad category of cannabis products includes everything from hash to live rosin.

Mitch Lindback, Lab Director at Copperstate Farms, has been growing and extracting cannabis for 15 years and has over a decade of experience working with cannabis derivatives. “Solventless is the truest expression of the cannabis plant,” he says.

Copperstate Farms is one of the largest greenhouse cannabis producers in North America and home to 1.7 million square feet of canopy and 40 acres under glass. Here is an inside look into the company’s solventless creation process:

The Harvest

One of the most important growth factors in cannabis is light, so cannabis grown in full-spectrum light often brings the best flower to harvest. In the weeks before harvesting, the lab conducts a test wash on cannabis plants before hand-selecting which will be used in rosin. Plants are selected based on appearance, aroma and test wash results. On harvest day, all flowers are lightly hand-trimmed and frozen within two hours of harvest.

The Wash

The wash system

Using only chilled RO water and minimal ice, our cannabis extraction experts gently break the trichome heads off the fresh-frozen cannabis using a stainless-steel wash system, by gently agitating the flower. Then they collect the 73μ-159μ trichome heads while pushing the immature trichome heads and stalks to pass through collection bags with a cold spray wash.

The Press

After carefully freeze drying, sifting and packing the hash into double-wrapped mesh rosin bags, Copperstate Farms uses rosin presses to gently express the nectar from the trichome heads using a little heat and a lot of pressure.

The Cure

All live rosin goes through a minimum 7-day cure. “We have found through extensive analytical testing that curing rosin for a minimum of seven days increased its terpene content by over 30 percent,” Lindback says.

The final product: live rosin

The extensive process to create solventless cannabis products is time and energy intensive, but leads to quality offerings, like full melt hash and live rosin. In fact, the solventless category is “primed for premiumization and growth in legal cannabis markets,” according to BDSA retail sales analytics. This is especially true in the dabbable concentrate product category and predicted in the vaping concentrate category as well.

With popular annual holidays like 7/10 (the cannabis community’s holiday for celebrating oil products, dabs and concentrates) gaining traction, solventless products are predicted to grow in market share and are worth cannabis companies looking into producing as demand rises among consumers who are always looking for innovative products that feature solventless concentrate.

To learn more about Copperstate Farms, visit www.copperstatefarms.com.

Minnesota Legalizes Adult Use Cannabis: Part 2

By Abraham Finberg, Rachel Wright, Simon Menkes
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In Part 1, we examined the current status of adult use cannabis in Minnesota, paying particular attention to the licensing framework, taxation and social equity considerations. In this article, we’ll cover some important need-to-know info if you’re considering opening an adult use business in the “Land of 10,000 Lakes.”

Starting a Cannabis Business in Minnesota: Important Considerations

As the state does not expect to begin issuing licenses before the first quarter of 2025, now is the time to plan a licensing campaign. With a population of 5,714,000, 64% of which live in the Twin Cities of Minneapolis-Saint Paul, Minnesota is close in population to Colorado, with 5,774,000 residents. Colorado currently has around $1.8 billion in yearly retail cannabis sales. This may suggest a similar possible level of sales for Minnesota once its retail cannabis market matures.

In a recent op-ed piece for Marijuana Moment, the New York cannabis consulting firm of Bridge West Consulting suggested three reasons, in addition to low cannabis excise taxes and reasonable license fees, why entrepreneurs should consider investing in a retail cannabis business in Minnesota:

  • Minnesota legislation prohibits localities from banning cannabis businesses. This avoids serious problems that have plagued cannabis businesses in other states including California and Montana in which access for cannabis companies has been denied and, in Montana’s case, even reversed. (Minnesota’s new legislation does allow local governments to limit the number of cannabis retailers to one for every 12,500 residents, however.)
  • Minnesota has allocated funds to assist social equity cannabis businesses, including $6 million to the CanStartup which will fund non-profits to make loans to budding cannabis businesses.
  • Bridge West makes the interesting observation that Minnesota is bordered by four states—Wisconsin, Iowa, South Dakota and North Dakota—none of which have legalized adult use cannabis. Moreover, an estimated 1.9 million people live outside of Minnesota within a 50-mile radius. That means that not only will Minnesotans not have to compete with out-of-state cannabis dispensaries but will benefit from the purchases of out-of-state residents that live within a comfortable distance.

How a License Application is Scored

HF100 gives some guidance as to how the Office of Cannabis Management (OCM) will score license applications, awarding points for the following 9 categories: social equity status, veteran status, security and record keeping, employee training plan, business plan and financial situation, diversity plan, labor and employment practices, knowledge and experience and environmental plan.

The OCM may award additional points if the applicant would expand service to an underrepresented market. Points may also be awarded to those applicants who can demonstrate a negative impact from cannabis prohibition such as arrest or imprisonment of the applicant or their immediate family. This is different from social equity status and the law says points may be awarded to the applicants “in the same manner as points are awarded to social equity applicants.”

Emphasis on Market Stability; Prohibition of Vertical Integration

Minnesota is taking measures to ensure “market stability,” which it doesn’t specifically define, but which it says involves:

  1. Ensuring an adequate supply of cannabis, but not a glut.
  2. Eliminating the illicit cannabis market.
  3. Promoting a craft cannabis industry.
  4. Prioritizing growth and recovery in communities that have experienced a disproportionate, negative impact from cannabis prohibition.

HF100 states, “The office shall issue the necessary number of licenses in order to ensure the sufficient supply of cannabis flower and cannabinoid products to meet demand, provide market stability, and limit the sale of unregulated cannabis flower and cannabinoid products.”

Continuing its emphasis on “smaller is better,” HF100 says, “Unless the office determines that the issuance of bulk cultivator licenses is necessary to ensure a sufficient supply of cannabis flower and cannabinoid products, the office shall not issue a bulk cultivator license before July 1, 2028.”

Vertical integration is also prohibited. “The office shall not issue licenses to a single applicant that would result in the applicant being vertically integrated.” HF100 goes on to state that microbusinesses are exempted, and that if the OCM determines that vertical integration is necessary to ensure a sufficient supply of cannabis and cannabis products during the first year of such products being sold to customers, it may authorize one or more applicants to be vertically integrated. However, such a group of licenses are very temporary and will expire at the end of that first year period.

An entity holding a cannabis retailer license may also hold a delivery license, a medical retailer license and an event organizer license. But no retailer may hold any other license. Also, no entity may own or operate more than one retail business in one city or county.

Interestingly, Minnesota is also allowing cities or counties to own and operate a municipal cannabis store, possibly similar to the way Utah has government liquor stores which compete with private bars, breweries, wineries and distilleries.

In Summary

Minnesota is just beginning to define and establish its adult use cannabis market. Like other states before it, it is attempting to promote social equity aims at the same time as it’s working to avoid the serious problems of a competitive illegal market and an over-or-under supply of cannabis to its citizens.

With low license fees and excise taxes and a good-sized population, 420CPA believes cannabis entrepreneurs should seriously consider Minnesota for possible investment. The first cannabis retail businesses are not expected to open for another 18 months, so now is the time for businesspeople to lay the groundwork for their applications and future locations.

Building An Integrated Pest Management Plan – Part 4

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

This is Part 4: Direct Control Options

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

Figure 1: Fungus Gnats Unleashed In A Grow Room

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

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

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

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

Figure 2: Municipal Water Treatment, RAIR Cannabis, Michigan

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

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

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

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

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

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

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

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

Sanitizing Acids for Surfaces & Irrigation Sources

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

Treatment Tools

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

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

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

Non-Chemical Microbial Bioinsecticides for Larval Stages

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

Minimal Risk Chemical Pesticides for Airborne Critters

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

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

Biochemical Pesticides

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

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

In summary, this week

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

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

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

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

The Sensory Branding Opportunity for Cannabis Products

By Dr. Ed Szczygiel
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Cannabis brands are facing a proverbial fork in the road: determining whether their product evolves into a luxury consumable or affordable agricultural commodity. While it is reasonable to assume the cannabis market space will organically grow into a luxury goods industry such as wine and spirits, the luxury brands that serve as the foundation of these markets were built over years of engagement between consumers, connoisseurs and producers. If cannabis companies want to successfully market their products as luxury items, a concerted effort towards well-defined, consumer-accessible branding is required.

The first step towards evolving a cannabis brand towards luxury is overcoming the fixation on cultivar identity. Unregulated cultivar naming currently impedes creativity and craftsmanship, disrupting brands and salespersons’ abilities to clearly communicate strain aesthetics.

The good news is the alcohol, coffee and consumer packaged food (CPG) industries have done most of the heavy lifting, paving the way with robust sensory science and analytical approaches to product characterization. Cannabis stakeholders need only adapt their tools and apply them to cannabis with similar intention.

Research suggests that aroma is one of the strongest predictors of positive consumption experience. As adult use consumers become familiar with current product offerings and increasingly legal availability, they will seek products that consistently yield the best experience. The most successful brands will be those that most effectively communicate that experience and then deliver it. The status quo – describing aroma using strain names, top terpenes or THC content – is not effective at harmonizing a brand’s promise with consumer experience.

Figure 1: Illustration of both the conventional branding approach (top) and the sensory-based branding opportunity (bottom).

The conventional cannabis product branding approach leaves to be desired a tremendous opportunity to characterize cultivars (Figure 1). Sensory science, the discipline used to evoke, measure, analyze and interpret reactions to materials through human perception, has been used for decades to characterize CPGs from skin lotion to washing machines. Adapting these well-established techniques for use in cannabis can be challenging, but it is certainly worth the investment.

These shifts in the cannabis industry have already begun to occur. I recently was the principle investigator on a white paper that presented a novel cannabis aroma wheel derived from aroma descriptors and a panel of trained sensory experts. In the study, sensory scientists evaluated randomly sampled cannabis flower over a period of several months. The researchers combined qualitative focus panels, literature review and formal blinded sensory tests to develop a comprehensive lexicon that served as a tool for trained evaluators to characterize cannabis aroma. This novel and robust tool (Figure 2) was designed to be used by trained panels to characterize cannabis aroma, is freely available and is just the beginning of a collective development of a data-driven cannabis lexicon.

Much like the World Coffee Research Lexicon referenced here, the Cannabis Aroma Lexicon is a tool with a specific purpose: collecting an objective description of the product aroma. It is a living document that will grow along with the industry. In the future, we may have lexicons to describe more than just aroma. Tactile and appearance sensory attributes of cannabis will gradually be defined by sensory scientists, presenting more opportunities for deep craftsmanship in the cannabis industry.

Figure 2: Expert-derived aroma wheel tool for cannabis aroma characterization.

The role that dispensaries play in adoption of standardized quality metrics is critical. The product features that position cannabis to be a craft product warrant the presence of a third-party expert to translate and guide consumers during the purchasing process. It’s intuitive to ask a waiter to recommend a pairing (i.e., a dry red wine to pair with a seafood dish), given the trust that consumers put in the restaurant to understand the properties of the food they are serving. Dispensaries have thus far filled the service structure role for cannabis, but the vast amount of unknowns regarding the physiological and sensorial effects of cannabis have resulted in inconsistent experiences that leave something to be desired in terms of consumer trust.

Application of sensory science in cannabis is an unparalleled opportunity for brands to build consumer trust and differentiate their products in a sea of strain names and high potency flower. Cultivars that can be established as measurably aromatic in a specific character can leverage that aroma profile to add significant value to the product. For example:

  • Cultivar name can be aligned with the perceived aroma (e.g., garlic is not bad, but expecting tropical and getting garlic can harm consumer trust).
  • Product catalog can be consolidated and optimized to avoid sales cannibalization by growing specific products to meet consumer group’s needs.
  • Guesswork is removed from breeding by measuring when a product is meeting sensory goals and ensuring it doesn’t drift over time.
  • Demonstrating transparency will win over ethical consumers. Utilizing controlled, blinded studies to profile aromas will add value to ethics-minded consumers.
  • Becoming a leader in connoisseurship. In the forefront of this shift in branding, one can position a brand to be ahead of the competition.
  • Elevating the dispensary experience. By utilizing aroma profiling, products can be more easily sold by budtenders and salespeople.
  • Opening doors to new application types (e.g., seasonal, occasion centered or geographically unique cultivars).

These are just some of the ways that aroma characterization will differentiate products and simultaneously contribute to cannabis brands’ ability to communicate craftsmanship and the maturity of the industry as whole. Not only will adoption of robust sensory-based branding improve the consumer experience by providing a means to compare products to one another, it will promote adoption of good manufacturing practices that simultaneously improve the quality and safety of cannabis products. Without consumer-accessible quality metrics, brands have little incentive to produce products of elevated quality and are conversely incentivized to prioritize quantity and meet minimum regulatory requirements.

Importantly, cannabis businesses will use this tool to adapt to an inevitable industry-wide shift towards connoisseurship and application of robust sensory science. While it may be challenging to shake off the “bad habits” that currently plague many brands, cannabis has significant potential as a luxury good. Consumers are eager for a better cannabis experience from purchase to consumption. How will your brand use sensory profiling to expand or evolve product offerings to succeed in a cannabis market full of luxury brands and what steps will you take now to prepare?