How to Decarb Weed

When opening a bag of freshly dried buds, it’s tempting to think eating it could be just as enjoyable. There are certainly some curious minds that have tried – but were disappointed with the results. Instead, you must decarb weed before you can really enjoy it. 

The problem is, there are many methods for at-home decarboxylation. That’s why it can be hard to identify the best way to decarb weed.  This article will address how to decarb weed, but first, let’s discuss what decarbing is.

Decarboxylation_converting THCA from plant's trichomes to THC
Decarboxylation converts THCA from the cannabis plant’s trichomes to THC

You only need heat and time to decarb weed. This is why curing/drying weed is so important – it helps convert some of that THCA to THC. But even then, it only converts a small amount – not enough to produce a substantial effect. That’s why eating cannabis, whether fresh or dried, won’t produce a potent effect. To properly decarb weed, you need heat, either from smoking, vaporizing, or cooking.

Once you’ve decarbed your weed, pull out the THC in a tincture or oil. 

Download our free marijuana Grow Bible to know more about decarboxylation and other ways to get the most out of your cannabis plants.

What Decarbing Does

Decarbing weed converts THCA to THC. Think of it as activating the psychoactive compounds that are dormant in the herb so that you can enjoy the recreational and intoxicating effects that it offers. You do this when you smoke or vaporize weed. You’ll also decarb cannabis to make concentrates and extracts, as this is how you activate its psychoactive effects. And there’s a couple of methods for doing this, and we’ll get to that later.

Marijuana edibles include cannabis concentrates and extracts. These extracts and concentrates come from decarbed weed. So, if you want to make edibles, you must first decarb your weed. Whether you’re making weed brownies, gummies, or cookies, you should ‘activate the THC before adding it to other items such as syrup, butter, or oil. Even if you’re more concerned about CBD, decarboxylation is necessary. The same is true when making cannabis topicals. These creams and lotions apply cannabinoids directly to the body. 

Marijuana edibles have cannabis concentrates and extracts from decarbed weed
Marijuana edibles have cannabis concentrates and extracts from decarbed weed

Decarbing extracts the CBD and THC from your harvest, and if done correctly, it has many benefits. Properly decarbed marijuana has greater potency, effectiveness, and preservation. The process of decarboxylation is rather simple; however, you must get the temperature right. The best temp to decarb weed is around 225°F (105°C), although you can find success with slightly higher or lower temperatures. 

Here are some of the most popular methods for decarbing weed at home: 

How To Decarb Weed

Now that we’ve discussed the fundamentals of decarboxylation, here are a few methods for doing it. Pick your favorite, then use your decarbed cannabis to make potent infused oils and concentrated tinctures. 

Method 1: Oven

Heat and time are the two major factors in weed decarboxylation, so naturally, the go-to kitchen appliance is an oven. However, since oven temperatures may vary and should be considered the average rather than an exact temperature, there’s a small risk of burning your cannabis with this method if you don’t keep a relatively close eye on it. Other than that minor drawback, the oven method is the easiest and requires the least time and tools. Speaking of tools, you’ll only need a baking tray and aluminum foil (or parchment paper).

Weed decarboxylation using an oven
Decarboxylation using an oven

The first step is setting your oven to 225°F (105°C). Place the oven rack in the middle position – this placement exposes your buds to the best temp to decarb weed. Next, lay the aluminum foil on your baking tray. This adds a layer of protection for your cannabis and prevents scorching.  Leave your cannabis in the oven for 45 minutes. After that, remove it from the oven and let it cool for 30 minutes at room temperature.

You can also place your cannabis in a mason jar and put that in the oven. This helps prevent smell.  This method uses the same steps, except your cannabis is inside a mason jar instead of on a baking sheet. The best part? Your decarboxylated cannabis is already in a container, which is perfect if you don’t plan to use it immediately.

Method 2: Slow Cooker

Use your crockpot (if you have one) to decarb and make cannabis-infused oils. Like the oven method, i’s rather easy to do; however, it takes far longer. You’ll need coconut or olive oil and dry cannabis plant matter. Simply mix everything in your crockpot, cover, and let it cook on high for an hour. After the initial hour, turn your slow cooker to low and cook for 2-3 more hours. Once done, let the mixture cool before straining it through a cheesecloth.

Decarbing weed in a slow cooker
Decarbing weed in a slow cooker

If straining through cheesecloth sounds like a chore, you can also use a mason jar, just like the oven method. However, for this method, you won’t decarb in oil. Instead, you’d only place coarsely ground cannabis into the jar. Then you’d place that jar into a crockpot with water. The water will slowly decarb your cannabis while also remaining in a safe container for storage. 

Method 3: Boil Bags

A heat-safe cooking pouch and some boiling water in a pot serve as a cheap alternative to the crockpot and mason jar trick. And compared to using the oven method, you’d run less of the risk of burning your herb or stinking up the house since it’s in a boiling bag.

Decarbing weed using a boil bag
A boil bag

You can also use this method to decarb other things, such as keif and hashish. The only downside is how long it takes compared to the oven method. Ninety minutes may not seem like much when compared to the process of making cannabis-infused oils, but it’s still a lot of time. Thankfully, you can decarb in batches by using multiple boiling bags.

As for the temperature, as long is the water is boiling, it’s hot enough. Since the temperatures are lower, you’ll need to spend the most time with this method. Be careful not to leave your cannabis in boiling water for too long. (We cover temperatures in detail in our decarb weed chart.)

Method 4: Herb Vaporizer

Finally, a more unconventional method of decarbing weed uses ‘already vaped material’ (AVM). AVM comes from dry-herb vaporizers. To decarb weed using a vaporizer, simply ensure you use the right temperature, then save what’s leftover. Infuse that leftover weed in oil or make a powerful tincture.  It may not be common, but it’s definitely a lot better than simply throwing it out. 

Decarbing weed using a dry herb vaporizer
A dry herb vaporizer

There is one drawback to this method. There’s a limited amount of marijuana that anyone can vape at one time. Unless you own a Volcano, it might take you a while to collect enough AVM to create edibles. 

The Best Way to Decarb Weed

How should you decarb your weed? Well, that’s entirely up to you! If you plan to make an infused oil, the crockpot method conveniently combines two steps into one; however, it’s very easy to keep your leftovers if you already own a vaporizer. 

In general, the oven method is the quickest and easiest method. Just be mindful of the smell that it may end up making!

Marijuana Decarboxylation times and temperatures 

If you’re ready to decarb weed, here’s a handy guide to get you started:

Temperature Heating Medium Dry Herb Time
310°F Oven 10-18 minutes
240°F Oven 50-60 minutes
212°F Boiling water bath 90 minutes
212°F (or the lowest possible setting) Vaporizer up to 3 minutes

Keep in mind; you want to use the lowest temperatures to preserve as much of the cannabinoids as possible. As seen in this decarb weed chart, the boiling bag method utilizes the lowest temperature, although it takes the longest time. 

Marijuana decarboxylation _use the lowest temp to preserve more cannabinoids
Use the lowest temp when decarbing weed to preserve as much of the cannabinoids as possible

Tips for Properly Decarboxylating Marijuana

  • Use the highest quality marijuana. Properly cured, well-stored marijuana will have better results than old, stale weed. 
  • Keep temperatures as low as possible. Lower temperatures preserve cannabinoid content and help produce more potent edibles and concentrates. 
  • Grind your weed before decarbing in a vaporizer. Grinding your weed makes it easier to heat trichomes evenly. This step is not necessary for other methods. 

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FAQs About Decarbing Weed

Do you need to decarboxylate weed for butter?

Yes. When making weed edibles, you should ‘activate the THC before adding it to other items such as butter, syrup or oil. Decarboxylating marijuana buds activates its psychoactive effects. Learn how to make marijuana edibles here.

What’s the ideal temperature to use for heating weed?

You want to use the lowest temperatures to preserve as much of the cannabinoids as possible. Using a vaporizer or a boiling bag utilizes the lowest temperature, although they take longer to decarb your weed. 

Growing marijuana isn’t that complicated, especially if you know what you are doing. Our blog can help with that.

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