Weed and Mushrooms: What Happens When You Mix Them?

Mixing weed and mushrooms is one of those things a lot of people have done, but almost nobody has studied. Maybe it was a festival. Maybe it was a long night with friends, and someone passed a joint just as the mushrooms started kicking in. Either way, you’re left with the same question: was that a good idea?

It’s a fair thing to wonder. When you’re in an altered state, you want to know what you’re adding to it. And right now, most of what people “know” about weed and mushrooms comes from friends, forums, and festival lore, not science.

The research is thin, but a couple of studies offer real clues about what people experience, what can go wrong, and what we still don’t know.

It also helps to know that “mushrooms” can mean two very different things. Psychedelic mushrooms contain psilocybin. Functional mushrooms, like lion’s mane and reishi, don’t get you high at all. Retailers like Great CBD Shop sell hemp-derived THC products and mushroom products as separate items, and none of the products mentioned here combine the two.

Important: This article is for informational purposes only; not legal or medical advice. For adults 21+. Cannabinoid legality varies by state, and the federal hemp definition narrows in late 2026—verify your state’s laws and that the retailer ships to you before buying any cannabinoid products. Featured products are not FDA-evaluated and are not intended to diagnose, treat, cure, or prevent any disease.

Very little controlled human research exists on mixing weed and mushrooms. What we do have mostly comes from peer-reviewed surveys, where people describe their own experiences after the fact.

Before getting into those findings, it’s worth separating the two types of mushrooms people mean.

Psychedelic mushrooms: These contain psilocybin, a compound that produces psychoactive effects, including changes in perception, mood, and sense of time. Psilocybin is a controlled substance federally and in most U.S. states. When people ask “can you mix weed and mushrooms,” this is usually the combination they mean.

Non-psychedelic mushrooms: These are functional mushrooms, like amanita, lion’s mane, reishi, and chaga. They don’t produce psychoactive effects, and they’ve become a growing wellness category. Pairing cannabis and mushroom supplements like these is a fundamentally different interaction than pairing weed and psilocybin. Great CBD Shop carries both categories separately. On the mushroom side, it stocks brands like SporesMD, UFORIA, Majestk, and Super Smashed. On the THCA side, it carries brands like ghost., Hidden Hills, Goo’d Extracts, and Half Bak’d. Curious whether the shop holds up? See Herb’s breakdown on whether Great CBD Shop is legit.

The research that does exist focuses on cannabis and psilocybin. Studies on cannabis and mushroom supplements like lion’s mane are even more limited, so there’s very little to say about that combination yet.

The most direct data on weed and psilocybin comes from a 2024 survey of festival and concert attendees in Colorado. It’s one of the few looks at what happens when people combine cannabis and psilocybin, the main psychoactive compound in magic mushrooms, in a real-world setting. 

Researchers surveyed 63 attendees who had used cannabis and a psychedelic at the same time at some point. They asked about their most recent experience: how cannabis changed the trip, and whether anything went wrong. Psilocybin was the most common psychedelic, used by 32 people (about 51%). Others had used LSD, MDMA, ketamine, DMT, or mescaline. 

One important caveat before the findings: the survey asked about psilocybin, not magic mushrooms specifically, and it didn’t separate psilocybin users’ results from everyone else’s. A third of participants also used more than one psychedelic in the same session. 

Of the 54 people who said mixing weed and psilocybin (or another psychedelic) enhanced their experience, here’s what came up:

• Tension reduction and balancing effects: 27 people (50%), including 13 psilocybin users
• Intensified psychedelic effects: 12 people (22%), including 7 psilocybin users, with reports of stronger visual and body effects
• Enhanced psychological processes: 11 people (20%), including 6 psilocybin users, describing things like clearer thinking or a better mood
• A different come-down: 8 people (15%), including 5 psilocybin users, mostly describing longer or more intense come-downs, with a couple saying it helped them wind down or sleep
• Vague or general enhancement: 7 people (13%), including 3 psilocybin users

Not everyone had a good time mixing weed and psilocybin. Some participants reported more anxiety and intensity, feeling less social, a darker mood, sleepiness, dissociation, and confusion.

The authors also floated two ideas. First, cannabis might work as a substitute for “redosing,” helping someone bring back the trip without taking more of the psychedelic. Second, it might let people reach a similar level of intoxication with a smaller psychedelic dose. Both ideas are speculative, not tested results, especially since the study didn’t measure how much of the psychedelic anyone took.

If you’re asking can you mix mushrooms with weed at a certain point in the trip, timing may matter. Using cannabis before, during, or after a mushroom experience may feel very different, but controlled human studies haven’t looked at that yet. And any reported effect is just that: one person’s experience. Metabolism, body weight, medications, mindset, and setting can all change how the combination feels for you.

A second study adds a different angle. It looked at regular cannabis users and compared those who had recently used psilocybin with those who hadn’t. The psilocybin group reported more cannabis dependence symptoms and was more likely to use cannabis for enjoyment, out of boredom, or just because it was around.

The key caveat: it doesn’t show that psilocybin causes cannabis dependence, or that using both together is more harmful. Researchers didn’t know whether people used them at the same time or how much psilocybin they took. So it says little about mixing mushrooms and weed in a single session.

There isn’t enough research to say whether consumption method changes the experience of mixing weed and mushrooms. The festival study didn’t compare methods, and it looked at psilocybin and other psychedelics, not mushrooms specifically. The authors say their sample was too small to compare product type, potency, or how often people used cannabis.

Here’s what the data does show: 

• Flower was the most common form across most themes.
• Concentrates, like dabs and vape carts, showed up most in the vague enhancement group (about 86%) and the come-down group (50%). 
• About 40% of participants used more than one type of cannabis, so effects can’t be tied to a single method.

What we know from cannabis research in general is that method affects timing and intensity. A review of cannabinoid pharmacokinetics found that inhaled THC starts working within seconds to minutes and peaks within about 15 to 30 minutes. Edibles take 30 to 90 minutes to kick in, peak after 2 to 3 hours, and can last much longer.

So it’s reasonable to think that smoking weed and mushrooms together would feel different from eating an edible mid-trip, which might hit later and harder. But that hasn’t been studied directly.

Can you mix mushrooms and weed? People do use mushrooms and weed together, and many describe it as calming or intensifying. But the science is still early. The best data comes from a small, self-reported survey, and some participants reported anxiety, confusion, and dissociation. Timing, method, and dose likely all matter, but none have been studied directly.

If you’re weighing mixing weed and mushrooms, go in with realistic expectations, respect the law where you live, and remember that more research is needed. When it comes to functional mushrooms and cannabis, it’s a completely different story, since those mushrooms aren’t psychoactive.