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How to Fresh-Freeze Cannabis | Cannabis Business Times

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Question: Hi, I keep reading articles and social media posts about freezing freshly harvested buds to preserve freshness, minimize mold and mildew contamination, and lower production costs.

I recently took a few dozen branches from freshly harvested plants and placed them into a walk-in freezer. When I checked on them a few days later, they had basically turned into a frozen mass covered in ice on the surface.

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Can you please explain why and how to freeze, and how this can lower my cost of production? I would certainly like to lower costs, but I’m also very curious about how I can utilize this process as a means of storing my excess cannabis and minimizing its degradation. Also, what is frozen cannabis best utilized for?

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Answer: It’s true enough that more and more growers are freezing cannabis flower destined for specific types of extracts. Live resin and live rosin extracts, in particular, are made using fresh-frozen cannabis. Both heat and oxygen are primarily responsible for terpene loss and THC degradation. This method minimizes exposure and preserves the most terpenes possible.

Fresh Frozen Call Out2

Cannabis buds yield a plethora of terpenes, which are volatile, resulting in a large percentage of these terpenes evaporating during harvesting, drying, and/or curing (see The Volatile Oil Composition of Fresh and Air-Dried Buds of Cannabis sativa” by Samir A. Ross and Mahmoud A. ElSohly). Freezing the freshly harvested buds immediately after harvest solidifies the chemical contents in the trichome heads, thus minimizing losses from evaporation. In a proper sub-zero environment, fresh-frozen cannabis will maintain freshness and quality for over a year.

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Another advantage of fresh-freezing cannabis is that the amount of time between harvest to processing is minimized. The resulting extracts have a much longer shelf life than cannabis buds. Freezing cannabis also helps solidify unwanted compounds such as wax and fats, which are then easier to filter or remove from a hydrocarbon extraction.

A rapid transition from harvest to frozen can also minimize the growth and proliferation of bacteria and molds that can contaminate the buds during hang-drying and curing. By not drying and curing the cannabis, growers can minimize the duration of the post-harvest phase and can avoid having to purchase and operate expensive environmental control equipment to maintain dry and cure rooms.

(Editor’s note: Fresh-freezing is a completely different process from freeze-drying, which is used for consumable flower products. For more on freeze-drying, see this video interview with Buckeye Relief’s team.)

How to Fresh-Freeze Cannabis

The key to fresh-freezing cannabis is to limit the buds’ exposure to room temperatures after harvest. Additionally, if unsealed containers are placed in a conventional non-sub-zero freezer, ice crystals can form on the outer surface of buds. This ice can inhibit the extraction process, resulting in a minimized yield of extract, as well as potency, aroma, and flavor.

Here are the steps to follow to properly fresh-freeze your cannabis:

  1. Remove all fan leaves and secondary leaves without trichomes.
  2. Remove branches and trim/buck off the buds.
    1. Do a second pass to remove all leaves without trichomes.
  3. Immediately place the harvested buds into insulated coolers with dry ice (never allow the buds to make contact with the dry ice) to precool the buds.
  4. Trim the buds.
    1. It is best to work with buds in cold temperatures.
  5. Place trimmed buds into sealable moisture-resistant bags or containers, and place the containers into another cooler with dry ice.
    1. Many growers prefer to precool the buds utilizing dry ice so that they will be below 65°F (18°C) prior to placing them into the blast freezer or freeze tunnel. These rapid freeze processes minimize the formation of ice crystals.
    2. Under perfect conditions, you want the buds to be in the 32°F to -4°F range (zero to -20°C) on the surface of the buds, and preferably within that same range inside the larger buds before rapid freezing.
  6. Lightly vacuum seal the containers that contain the trimmed buds.
    1. Do so gently; do not clump it all together. Layer the buds so there is a loose to medium consistency, and so they are fairly flat to better facilitate the blast freezer. This minimizes freezing time while ensuring even freezing throughout the contents. Vacuum sealing also minimizes oxidation and ensures outside moisture does not migrate to the buds and form surface ice.
  7. Place vacuum-sealed containers into a third cooler with dry ice.
    1. It is imperative that the frozen cannabis is never allowed to thaw before it is utilized for extraction.
  8. When the third cooler is full, place the containers into the blast freezer or freeze tunnel to be frozen.
  9. After blast freezing, place the frozen buds into a sub-zero freezer capable of achieving at least 0°F (-18°C), but preferably, buds should be stored at -4°F to -22°F (-20°C to -30°C). Some growers prefer as low as -40°F to -112°F (-40°C to -80°C).

Fresh-frozen cannabis is a benefit to both consumers and growers because freezing the cannabis minimizes labor costs and reduces the time between harvest, extraction, and processing. A grower can simply harvest, trim, and freeze a harvest, rather than harvest, trim, dry, and cure. When fresh-freezing, the frozen buds are ready for extraction or delivery to the extraction facility only 24 hours after harvest. This results in a lower cost of production of the starting material, and ultimately a lower price for the resulting extract, allowing for a lower price to customers.

Things to Avoid When Fresh-Freezing Cannabis

Frozen trichomes are hard and brittle. Excessive or rough handling of frozen cannabis can damage and dislodge trichomes, thus diminishing potency and flavor. Do not drop or shake frozen cannabis bags.

Look for leaks or holes in containers. Any leaks can result in trichome loss or freezer burn if not under vacuum. Freezer burn causes cellular damage, resulting in terpene compromise, cannabinoid degradation, and discoloration.

Never allow buds to thaw before use; only remove them from the freezer as needed for use in extraction. Letting them thaw allows terpenes to evaporate, and it’s better for the extraction process if the buds are frozen, not thawed.

You must be mindful that the reason for freezing is to best preserve the desired compounds. As such, timing is very important: If you do not arrest terpene loss by immediately solidifying the trichome head by utilizing insulated coolers and dry ice at all trim stations, pre-blast freezer steps, and when utilizing a freeze tunnel, all these steps are meaningless. As the cannabis sits, it wilts and loses the qualities you are attempting to preserve.

Kenneth Morrow is an award-winning grower and breeder. He is the owner of Trichome Technologies, a research and development company. He is also a consultant and author of the book “Marijuana Horticulture Fundamentals” and a founding advisory board member of Cannabis Business Times, where he has been a columnist since 2015. Find him on Instagram @trichometechnologies or reach him via email at: [email protected].



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Cannabis Freedom Isn’t Free

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A close-up of a large legal cannabis flower with a soft-focus US flag in the background

Cannabis freedoms are under attack. 

In numerous states, lawmakers are attempting to roll back marijuana legalization laws. Nationwide, the Trump administration has proposed repealing long standing federal protections for state-legal medical cannabis patients.

NORML is leading the fight to secure and sustain cannabis freedom for millions of responsible consumers. That’s because NORML stands for freedom and independence – not just on special occasions like the July 4th holiday, but every day. And that’s why we won’t rest until we have ended cannabis prohibition and discrimination nationwide.

NORML has always represented responsible cannabis consumers, and it’s you who can help us win this fight.

That’s why we are asking you now – before you head to this weekend’s holiday barbecue or parade – to take a moment to stand with NORML.

Your support helps us continue our important work, like ending workplace discrimination, protecting parental rights, advocating for home cultivation, securing Second Amendment rights, lobbying for lower sales taxes on cannabis, and ending arrests. 

Please give to NORML today, as we as a nation celebrate our most fundamental liberties, so that we can free all Americans from the harms of marijuana prohibition.



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Big Tobacco Is Selling A Corporate Cannabis Blueprint As A Public Mandate, Former New York Regulator Says (Op-Ed)

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“CPEAR’s poll is a thinly veiled attempt to persuade policymakers to take a broadly popular issue in a less popular direction.”

By Damian Fagon, Parabola Center

In 1994, R.J. Reynolds quietly pumped millions into a flag-waving coalition called “Get Government Off Our Back.” The mission was simple: pose as a grassroots movement with an anti-regulation agenda to prevent the Food and Drug Administration from touching cigarettes. Three decades later, a similar playbook has found its way to cannabis, and the fingerprints are unmistakable.

Today’s vehicle is the Coalition for Cannabis Policy, Education and Regulation (CPEAR), bankrolled in part by Altria, the Marlboro parent that sank $1.8 billion into the cannabis firm Cronos Group. Earlier this month, CPEAR released a poll trumpeting a popular “mandate” for the STATES 2.0 Act, a bill that would take a “states’ rights” approach to marijuana. Set aside the patriotic headlines and the math tells another story. This poll functions not to record public opinion, but to manufacture it.

The Messenger Is The Message

CPEAR is not a neutral think tank. It is a front group financed by Altria and other tobacco and alcohol giants.

The polling firm, Forbes Tate Partners, also happens to be a public affairs firm and a registered lobbyist for Altria. Sponsor and pollster are, quite literally, on the same team.

Accepting the findings at face value asks us to forget that the data and the desired outcome share the same business address.

A Framework For Consolidation

The cynical design of CPEAR’s favored bill, STATES 2.0, lies in what it doesn’t do: expunge criminal records, protect cannabis workers’ rights, prevent marijuana-related deportations or take any accountability for the harms caused by the war on drugs. Instead, 50 states will compete for investment on the most lenient, “business-friendly” terms they can devise.

The deepest-pocketed operators and conglomerates will flock to low-tax, low-oversight jurisdictions, monopolize supply chains and absorb smaller competitors. We have seen this playbook before in alcohol and tobacco, and the economic logic with cannabis will be no different.

Every law we pass shapes the economy Americans will inherit. Adopting the STATES 2.0 Act would codify consolidation and leave mom-and-pop operators scrambling for scraps.

Congress can choose a better course by insisting on a legalization framework that clears records, protects state regulation and channels investment to the very communities that paid the highest price under prohibition. Anything less turns legalization into prohibition by another name.

Persuasion By Design

CPEAR’s poll is a thinly veiled attempt to persuade policymakers to take a broadly popular issue in a less popular direction. It frames STATES 2.0 in the language of states’ rights, a tested appeal to conservative voters, while staying silent on relevant questions related to record expungement, equity and small business access.

By excluding legislative alternatives such as the MORE Act, which pairs legalization with the justice reforms that a majority of Americans do support, the poll reduces a complex debate to a loaded yes-or-no test.

And by asking how a person would feel about a congressional candidate or the Trump administration if they supported marijuana reform, the final question seeks to make CPEAR’s chosen bill look like a winning political decision. And yet, it isn’t.

What The Numbers Really Say

The poll’s own data reveal a critical weakness. Despite general support for federal legalization standing steady at 70 percent, respondent enthusiasm drops to the low 60s when presented within the STATES 2.0 framework.

Wouldn’t we expect a federal marijuana bill to garner at least as much support as marijuana legalization generally? But even in a poll framed by the bill’s own advocates, STATES 2.0 is less popular than the cause it claims to represent.

And the news for their favored politicians is even worse—despite CPEAR’s creative description of a “near majority” being more likely to support a pro-cannabis candidate, the big takeaway is that the actual majority would not be more likely to support a pro-cannabis candidate. With tobacco and alcohol conglomerates leading the lobbying charge, can we blame them?

We don’t know what else the numbers showed.

The report relies on a low-transparency online poll of 2,051 respondents and omits key disclosures that make it impossible to verify or replicate. Without information on respondent demographics, such as age, gender identity, race and income or a nuanced look at their political philosophy instead of just party labels, one could easily “cook the books” by oversampling favorable groups and pretending it happened organically.

By withholding these data, along with the weighting methods that the American Association for Public Opinion Research considers basic requirements, the pollsters tell Congress and the voting public to simply trust them. Given their blatant conflict of interest, why should anyone?

Damian Fagon is a former New York cannabis regulator and the executive leadership fellow at Parabola Center for Law and Policy.

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Gen Z And Cannabis Blamed For This Companies Troubles

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This iconic company has survived war, Covid, grunge – but worries Gen Z and cannabis may hit it hard!

Gen Z and cannabis blamed for this companies troubles. Yes, Jack Daniel’s, the iconic Tennessee whiskey brand owned by Brown-Forman, is grappling with a sobering sales slump. They state Gen Z and cannabis blamed for the company’s troubles. They recently reported lower-than-expected earnings, citing a significant drop in U.S. whiskey consumption. In a candid earnings call, executives noted a generational shift in drinking habits and the growing popularity of marijuana as key factors behind the downturn.

RELATED: How Marijuana Can Heighten Intimacy With Your Partner

Jack Daniel’s, established in the 1830s and officially registered in 1866 in Lynchburg, Tennessee, is America’s first registered distillery and a National Historic Place. Owned by Brown-Forman since 1956, it became a global whiskey leader, selling over 12 million cases annually at its peak.Recently, sales have softened, declining in 2024.

Gen Z And Cannabis Blamed For This Companies Troubles

According to Brown-Forman CEO Lawson Whiting, younger consumers are simply not drinking whiskey like previous generations. “The Gen Z consumer is more health-conscious, more selective, and less loyal to traditional spirits brands,” Whiting said. “We’re seeing that whiskey, and brown spirits in general, don’t resonate with them the way they did with millennials or Gen X.”

Indeed, multiple studies have shown that Gen Z is drinking less alcohol than previous generations at the same age. Many are opting for low-ABV beverages, mocktails, or skipping alcohol altogether. This cultural shift has put legacy alcohol brands on edge, as they struggle to evolve in an era where wellness trends often run counter to heavy drinking.

Adding to the industry’s woes is the steady normalization and legalization of cannabis across the U.S. With legal weed now available in dozens of states, consumers have more options for how to relax — and many are turning to THC instead of alcohol. For a brand like Jack Daniel’s, built on the ritual of drinking, this presents a formidable competitor.

RELATED: Being A Couch Potato Changes Your Personality

Brown-Forman isn’t alone. Other major alcohol producers have also flagged these demographic and behavioral changes as challenges to growth. While some have pivoted toward ready-to-drink products or invested in cannabis-adjacent ventures, Jack Daniel’s remains tethered to its heritage as a whiskey brand.

The company’s concern isn’t just about quarterly losses — it’s about long-term relevance. If Gen Z continues to move away from traditional spirits, and cannabis captures more market share in the relaxation and recreation space, Jack Daniel’s may find itself facing more than just a sales dip — it could be confronting a generational identity crisis.

As the brand looks to the future, it must decide whether to double down on tradition or adapt to a culture that’s increasingly turning the page on old-school drinking habits.



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