Are you interested in using cannabis to create homemade edibles, cannabis-infused oils, or healing topical salves? If so, it is very convenient and effective to start with cannabis that has been properly decarboxylated first. Wait, what? Don’t worry… It’s cool if you aren’t familiar with the term. This article will give you a quick run-down of what cannabis decarboxylation is and why it is important. Then, we’ll go over how to decarboxylate your cannabis, including easy step-by-step instructions on how to “decarb” cannabis in the oven. The result is a ready-to-use, versatile, activated cannabis product.
What is Decarboxylation?
Think of decarboxylation (also known as “decarbing”) as activating raw cannabis into an enhanced potent form. In more scientific terms, decarboxylation is the process of physically altering the chemical structure of various cannabinoid compounds found in raw cannabis plants – including both marijuana and hemp.
When a cannabis plant is growing or freshly harvested, the cannabinoids found within the flower trichomes contain an extra carboxyl ring or group (COOH) attached to their molecular chain. The process of decarboxylating cannabis removes that carboxyl group from the cannabinoid molecule. This process is what effectively transforms THCA into active THC, described more below.
Some slow and natural decarboxylation occurs as fresh cannabis dries and cures after harvest. However, heat is the most quick and effective catalyst to trigger the cannabis decarb reaction. For example, decarboxylation is virtually instantaneous when cannabis is smoked or vaporized.
Temperature and Decarboxylation
As we explored in this article about vaporizing cannabis, various cannabinoid compounds and terpenes respond to distinct temperature ranges. Some are activated, altered, or even destroyed at different temperatures. This is one of the many reasons we love using a dynamic heat range vaporizer rather than combusting (smoking) cannabis. You get to reap the benefits of far more intricate elements of the bud.
In the same manner, it is best to decarboxylate cannabis low and slow. Experts say that approximately 230-250°F is the “sweet spot” temperature to decarb cannabis. In that range, THCA converts to THC while also preserving many other beneficial cannabinoids and terpenes. The chemical reactions (and THC activation or degradation) will vary with time, as noted in the chart below.
Why Decarb Cannabis
In the cannabis community, the raw or non-decarboxylated cannabinoid compounds are referred to as the “acid” forms – such THCA or CBDA. Cannabidiolic acid (CBDA) is a non-psychoactive cannabinoid and the acidic precursor to potent CBD. Likewise, tetrahydrocannabinolic acid (THCA) is not psychoactive until it is converted into the more well-known compound THC. For instance, when you ingest raw cannabis there is very little psychoactive effect or “high” experienced. Then, when cannabis is decarboxylated it becomes psychoactive.
Obviously, this is important for folks who are hoping to feel the psychoactive effects of their cannabis edibles, oils, tinctures, or otherwise. Yet the benefit is so much more than just feeling the “high”. Both THC and CBD exude scientifically-proven powerful healing properties in their decarboxylated forms. This includes providing relief from anxiety, pain, inflammation, and more. THC and CBD readily absorb in our bodies and interact freely with our bodies endocannabinoid system to work their magic.
On the other hand, the raw acid forms of THC and CBD (THCA and CBDA) also have some promising but lesser-studied medicinal applications of their own. Therefore, folks who are interested in a full-spectrum, ultra-healing experience may choose to use a combination of raw and decarbed cannabis in their homemade oils and salves.
Isn’t it pretty? A mix of our homegrown Cookie Wreck and Gold Lotus, post-decarb.
Ways to Decarboxylate Cannabis
The good news is that it is very easy to decarb cannabis. Especially the way we do it – in the oven! Because the basic idea behind decarboxylating cannabis is to heat it, there are clearly many ways you could decarb cannabis at home. This includes heating it on the stove, in a double-boiler, or in a crock pot. Some people add it directly in food or oil as part of the final cooking process.
However, those methods require more hands-on monitoring or stirring. Also, they easily lend themselves to accidentally overheating or unevenly heating the cannabis. Overheating will destroy many of the beneficial cannabinoids, and the resulting product can also become very lethargic. In contrast, decarbing cannabis in the oven is extremely precise, effective, and virtually hands-off. The only easier (and odorless) option is to use one of these badass Nova or Magical Butter automatic decarboxylator devices.
HOW TO DECARBOXYLATE CANNABIS IN THE OVEN
- Preheat oven to 250°F. Also, keep in mind that this is will make your house smell strongly of weed for a few hours. You’ve been warned.
- Line a baking sheet or glass baking dish with parchment paper. This makes it easy to collect and package everything after baking.
- Choose your cannabis of choice. We specifically save our more fluffy, loose, less-manicured homegrown buds for this. I also like to use the strains we grow that are high in both THC and CBD (as opposed to high-THC, low-CBD strains) to create well-balanced and healing oils or salves. You can obviously do this with a CBD-only strain of cannabis as well. If you’re using homegrown cannabis, it is best to use material that has already been properly dried and cured first. If you need tips about harvesting, drying, and curing homegrown cannabis – see this article.
- Rip the buds into small pieces. See the photos below for scale. Some people grind their cannabis for decarboxylation, but I don’t find it necessary.
- Now, decarboxylate the cannabis on 250°F for 25-30 minutes. You could also use a lower temperature for slightly longer time to preserve more terpenes (e.g. 230°F for 45 minutes). Refer to the chart above.
- Some people cover their baking pan of cannabis with foil or second baking sheet upside down on top, in order trap any cannabinoids or terpenes that may volatilize in the process.
- When the time is up, remove the tray from the oven and allow the cannabis material to fully cool. It should have changed from green to light brown.
- Transfer the decarboxylated cannabis into a glass air-tight container with a tight-fitting lid, such as a mason jar.
- Finally, store the jar of decarbed cannabis in a cool dark place, like you would with other cannabis.
- Plan to use your decarbed cannabis to make oil, salve or edibles within 3-6 months. I recommend a year maximum, unless you wan’t a sleep aid! It won’t “go bad”, but over time the THC naturally degrades to CBN – a cannabinoid that makes weed very sleepy. Your can find our homemade cannabis-infused oil recipe here, and our healing salve recipe here.
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Now you know how to decarboxylate cannabis, ready to infuse in oil, edibles, or use in any recipe that calls for decarbed cannabis! My favorite use for it is to make homemade topical salve. Or,learn how to make cannabis-infused oil here. Please remember to heed caution when you consume homemade cannabis products. Because it is challenging to determine exact potency, I highly suggest micro-dosing (taking only tiny amounts) at first.
In closing, I hope you found this article to be useful and enlightening! Please feel free to ask any questions, and spread the love by sharing this post.
5 thoughts on “How to decarboxylate weed?”
Very useful article. I have a question. Which sous vide machine do you have that gets to 250F? Mine only goes to 194. And Anova Precision Cookers only go to 197. Can you recommend a time to cook for lower temps? Thank you.
Just curious if this method would work with keif as well as I already have a mason jar half full. I hated having to scrape it last time onto a sheet and have the possibility of losing thc from keif. I usually just add it straight into a mixture and cook it a little lower than normal for longer. Like uk cheese keif nacho cheese. Just add inactivated keif to the bubbling mixture once it reaches 230.
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To make it potent, get a spray bottle & spray it with Everclear alcohol. Someone did a test on a video I watched a year ago & they tested the THC & that method made it stronger than how you did without spraying it with Everclear. I tried it & I wont ever decarboxylate without Everclear again!
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