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Technical advances in cannabis curing focus on water activity and terpene stability

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Curing is one of those phases of cannabis production that almost everyone agrees is important, but that importance hardly translates into cannabis facilities. It’s understandable that growers want to maximize their canopy space first and foremost. After all, more flowers, more income. However, the irony is that by the time a plant reaches the curing room, most of the money has already been spent. The genetics are locked in, the lights have done their job, the rooms have been marked, the harvest has been carefully handled. And yet, quality is often validated or left behind.

Simon Knobel of Calyx Containers has spent an amazing amount of time thinking about this disintegration. The company started about 9 years ago, when Simon and his co-founder Alex were still in school and adult cannabis was becoming legal in Massachusetts. “Back then, cannabis packaging meant pill bottles, borrowed wholesale from the pharmaceutical world and reused without much thought,” explains Simon. “Our initial instinct wasn’t to do something revolutionary. It was just to build something that made sense for cannabis.”

As the company developed a range of packaging formats, the focus was on quality at the point of sale. “Scent retention, ease of use, shelf life, that was the pace of our design process. What took longer to fully register was that the degradation didn’t just happen after packaging. In many cases, it was already baked in during curing.”

Simon and Calyx did extensive market research to understand what was happening with quality degradation. “It’s good to talk not only with operators, but with consumers.” A story stuck. Simon recalls interviewing a client who was on a ski trip with his family and trying to hide the fact that he had cannabis with him. This awkwardness of smell, discretion and manipulation became a design problem. The sliding cover, integrated gasket, meant the elimination of the twisting motion that gave some users a literal pain in the wrist. But it also opened up a deeper line of research.

As Calyx began to talk more seriously with growers, a recurring question came up. Where exactly does quality start to slip? To answer this, the company partnered with the Cannabis Research Coalition and worked with Dr. Allison Justice on research based on the cure. “What we found was that it wasn’t particularly comfortable for anyone relying on legacy methods,” says Simon. “One of the biggest drivers of terpene preservation was the stability of water activity. When water activity drops below 0.55 aW, the stomata begin to collapse, then shrink, then break. At that point, the mono-terpenes escape.”

These mono-terpenes are responsible for most of the aromas associated with quality cannabis. “They are also volatile in nature. Once they’re gone, they’re gone,” highlighted Simon.

© Calyx Vessels

Basic methods and alternatives
Traditional healing methods are based on burping. Opening containers, exchanging air, manually regulating humidity. “This methodology works, but it also introduces oxygen. In addition, the plant material is also subject to mechanical stress. Both oxygen and mechanical stress accelerate degradation, thus hampering quality.”

Calyx Cure was designed as an alternative to that ritual. “Instead of active intervention, Calyx Cure uses a passive atmospheric film with selective permeation properties. The layers are designed to allow specific gases to move through the material while others are restricted. Biological curing processes continue, but without opening the container, without introducing excess oxygen and without handling the flower.”

In controlled studies, Calyx saw a 33% improvement in monoterpene profile preservation compared to traditional approaches such as turkey pouches. “Practically speaking, that first hit of aroma you get when you open a jar, driven largely by monoterpenes, is intact.”

Complicating the picture is that curing is not reversible. There is a persistent belief that if cannabis dries out too much, there are no moisture packs or other interventions that can bring it back. “Excessive drying slows down the enzymatic reactions, alters the aging process and permanently changes the composition of the terpenes. Once the quality is lost at that stage, the bottle cannot revive it,” he said.

© Calyx Vessels

Curing and speed to market
Therefore, post-harvest processes cannot be the last element of cannabis facility design. “Sometimes speed or short-term cost savings drive the decision. Cure less, move product faster and assume the container will handle the rest.” Market dynamics don’t help either. When a new market opens and the shelves are empty, speed is rewarded and cutting corners can be the difference between hitting dispensaries later.

Calyx approaches it as a manufacturing and engineering problem rather than a branding exercise. Unlike much of the packaging industry, which operates largely as a middleman, Calyx operates its own factory in Utah. “That vertical integration allows us to iterate quickly. New designs can be prototyped in 1 or 2 weeks.”

This can be a huge plus, as quality control is a hot topic in the wider world of agriculture, not just cannabis. The industry often talks about wanting nutraceutical or food standards. These industries have already solved the complexity of the supply chain. They know how to produce in one region and deliver consistently to another. Cannabis, especially if it wants to move globally, will need similar discipline.”

And as with food packaging, sustainability is part of that equation in cannabis. Calyx has extensively studied compostable and hemp-based structures. “Compostable materials struggle with terpene conservation and water activity control. If the package breathes too much, the plant pays the price.”

Instead, Calyx’s approach to sustainability is based on reducing the use of materials at the manufacturing level. “The cover molded joint is a good example,” explains Simon. “Traditional seals require cutting circular inserts from large sheets, creating huge waste. We’ve designed molds where a small amount of polymer forms the cover and joint in one plane, creating almost zero waste and a fully recyclable component.”

Healing, it seems, is not passive waiting. “It’s an active and fragile process,” says Simon. “And like most fragile things in cannabis, it benefits from being engineered rather than inherited.”

For more information:
Calyx vessels
1991 W Parkway Blvd. West Valley City, UT, 84119-2026
724-303-7481
(email protected)
calyxcontainers.com

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CEA Awards handed out at Indoor Ag-Con

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A new tradition in the CEA industry is the annual Gala Luncheon at Indoor Ag-Con, presenting the CEAs — Cultivating Excellence Awards. This year, Jiffy won the Product Innovation award for its gel, and Bright Farms won the Operational Excellence award. The Trainblazer Award was presented to Dr. Gene Fiacomelli, who has dedicated much of his professional and personal life to furthering the cause of growers.

© Eelkje Pulley | MMJDaily.com

© Eelkje Pulley | MMJDaily.com

“These teams are setting the pace for controlled environment agriculture while pushing the boundaries in innovation, operations and product development while proving what’s possible in our industry right now,” said organizers Indoor Ag-Con and Inside Grower Magazine.

The awards program is designed to recognize and celebrate excellence, innovation and leadership in the controlled environment agriculture (CEA) sector, highlighting achievements in three categories: Operational Excellence, Product Innovation and a special Trailblazer Award.

© Eelkje Pulley | MMJDaily.com

Voltiris and Zayndu were nominated for the Product Innovation Award, but Jiffy won for Jiffy Gel, a biodegradable gel-based substrate specifically designed for controlled environment agriculture (CEA).

© Eelkje Pulley | MMJDaily.com

The nominees for the Operational Excellence Award were haven greens and Planet Farms, and Bright Farms ended up winning. In their words: “BrightFarms measures its success through operational expansion and measurable business results.”

© Eelkje Pulley | MMJDaily.com

For the Trailblazer award, there were no nominees, but there was a winner. “In our industry there are those who explore the unexplored, ask the questions that no one else asks and push the boundaries of what is possible,” said the organizers. “The Trailblazer Award recognizes those who are not afraid to challenge the status quo and push research and CEA application into new areas.” And that’s Dr. Gene Fiacomelli. Since the beginning of the 80s, his research interests include the research, design, development and applications of controlled environment plant production systems (greenhouse and growth chamber): crop production systems, nutrient supply systems, environmental control, mechanization and labor productivity.

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Colorado Marijuana Revenue Is Declining As Other States Legalize, But It Still Outpaces Alcohol Taxes, Report Shows

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Marijuana sales tax revenue has steadily declined in Colorado over the past five years as more states have implemented legalization and intoxicating hemp products have grown in popularity, state officials say in a new report. However, cannabis brings in more tax dollars than alcohol or cigarettes.

In a memo to the nonpartisan Legislative Council of the Colorado legislature, staff “wanted to answer common questions about how marijuana industry revenues fit into Colorado’s state budget.” That includes $231.1 million in cannabis collected by the state in fiscal year 2024-25.

Adult marijuana is taxed at three levels in Colorado: a 15 percent excise tax, a 15 percent sales excise tax, and a 2.9 percent general state sales tax. As one of the first states to legalize recreational marijuana, Colorado’s revenue from such sales “grew steadily over the first eight years of legalization, reaching $424.4 million in FY 2020-21.”

After that, however, “revenues fell for the first time in 2021-22, and have declined every year,” the Legislative Council said. “Marijuana tax revenue fell to $231.1 million in FY 2024-25, 45.5 percent below the peak in FY 2020-21.”

It is remarkable notice He says the decline in marijuana tax revenue in recent years “has been largely due to low prices and a drop in demand as other states across the country legalize marijuana, and alternatives like intoxicating hemp become more available.”

Gov. Jared Polis (D), a longtime champion of cannabis reform, noted the potential economic impact of expanding legalization, He hoped states like Texas would continue to stave off the problem by scoffing so Colorado could continue to collect marijuana tourism dollars.

Texas may remain a prohibitionist state, but cannabis is now legal for adults in almost half of US states, a broader shift. has obviously contributed to the decrease in income.

But the new report also says the rise of intoxicating hemp products is diverting tax dollars. Whether the federal ban on such products changes when it takes effect in November remains to be seen.

Even as statewide legalization expanded and consumer demand increased in the hemp market, however, the Legislative Council released data comparing marijuana to other vices, including alcohol and cigarettes.

In fiscal year 2024-25, marijuana sales generated more tax revenue than alcohol ($54.3 million), tobacco products ($68.2 million), nicotine products ($91.6 million) and cigarettes ($213.9 million).

through LCS.

Until then, surveys have consistently found this More and more Americans are choosing marijuana and cannabis-infused drinks over alcohol and cigarettes.

Meanwhile, only in 2025, Colorado saw more than $1 billion in marijuana sales, a milestone the governor announced in December. And while the Legislative Council attributed part of the decline in cannabis sales to the sale of intoxicating hemp products, Polis also said recently. The pending federal ban will “stifle growth and innovation” in the market.


It’s Marijuana Time tracking hundreds of cannabis, psychedelic and drug policy bills in state legislatures and Congress this year. Patreon supporters By pledging at least $25 per month, you’ll get access to our interactive maps, charts and audio calendars so you never miss a development.


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Meanwhile, the governor said that last week his state did not have to join a lawsuit supporting a federal ban on the possession of guns by people who use marijuana that’s now before the US Supreme Court, and he personally opposes the state attorney general’s “legal position on it.”

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Large Dutch greenhouse grower turns energy volatility into opportunity

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Volatility in energy prices continues to affect greenhouse gas producers across Europe, as the growing share of renewable energy and developments in electricity markets lead to stronger and more frequent price increases. For a large Dutch greenhouse grower, this challenge became the starting point for a more flexible and efficient approach to lighting management.

Like many high-intensity greenhouse operations in the Netherlands, the business faced rising electricity costs and major surprises while requiring precise light control to maintain consistent crop quality throughout the year.

To meet these challenges, the manufacturer implemented the Netvion intelligent control system. The solution enables real-time control of light intensity and spectrum without the need to rewire or make major changes to the existing greenhouse infrastructure.

© Netvion

Responding to extreme electricity prices
Electricity prices in the Netherlands have shown considerable volatility in recent years, ranging from negative prices during periods of renewable overproduction to sharp peaks in demand. “Traditional wired lighting systems offer limited flexibility to respond to rapid price changes,” says Sharan Avati with Netvion. “This often results in inefficient energy use and higher operational costs.”

With Netvion’s system, the grower can dynamically adjust lighting levels based on real-time electricity prices. During high price periods, light intensity is reduced to the minimum level required for crop development. When prices are low or negative, lighting levels can be increased to support plant growth, taking advantage of favorable market conditions.

© Netvion

Improve crop yield through clear precision
High-value greenhouse crops require precise control of light intensity at different growth stages. Using Netvion’s multi-channel lighting control, the manufacturer fine-tuned light levels from 30 µmol/m²/s at high prices to 200 µmol/m²/s when energy costs were low.

This level of precision optimized energy consumption while maintaining consistent crop quality. Instead of increasing stem length, the cultivar saw a measurable increase in crop weight, reporting 3-7% heavier crops, depending on crop type and growing conditions.

According to the grower, this improvement was driven by better alignment of light levels to plant needs during favorable energy price windows, without overstressing the crop during high-cost periods.

© Netvion

Fast financial impact through the fast energy manager
The financial impact of the wireless lighting system was very dynamic. With a capacity of 3 MW to connect to the grid (“knip”), the producer uses Netvion to respond quickly to fluctuations in electricity prices.

© Netvion In practice, correcting lighting levels allows growers to recover approximately 20-30% of their total daily energy costs in 15 minutes under extreme market conditions.
Depending on electricity prices, it can be worth up to 1,500 euros received in a single 15-minute window, shares Sharan. “This emphasizes the importance of real-time control speed rather than fixed hourly savings.”

“Combined with the reduced installation and maintenance costs enabled by the wireless infrastructure, the system provided a strong business case and approximately a two-year return on investment, while also reducing cabling, labor requirements and overall system complexity.”

© Netvion

Easy integration into existing greenhouses
Although Netvion is designed to integrate with existing climate control platforms, this manufacturer followed a different approach. Instead of using a standard third-party climate computer, the company developed custom in-house software to handle the control logic and system connections.

Netvion’s open and flexible architecture enabled integration with this custom-built platform, allowing the producer to implement their own advanced control strategies, taking advantage of wireless high-resolution lighting.

Sharan: “For other greenhouse operations using commercial climate control systems, integration can be easier. This case demonstrates that Netvion supports both standard integration and highly customized control environments based on the grower’s operational configuration.”

© Netvion

For more information:
Netvion
+31 613921828
(email protected)
www.netvion.io

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