You buy shrooms, forget about them for months, and then suspect they’ve gone bad. It’s a total bummer, right? 

We’ve heard these stories a lot. And it’s better to be sure than to assume. 

Since shrooms are fungi, they are vulnerable to mold and decay if not stored properly. Spoiled mushrooms are essentially ‘expired.’ Additionally, psychedelic mushrooms can lose their potency over time, which is another sign they’ve gone bad.

The last thing you want is a bad trip or a stomachache from expired shrooms. In this article, you’ll learn how long psychedelic mushrooms last and how to store them to keep them potent and safe for use.

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Key Takeaways

1. Psychedelic mushrooms can ‘expire’ when bacteria or mold begins to grow on them. Another way they turn bad is when the psilocybin, the psychedelic compound in shrooms, degrades over time. 
2. You can tell a shroom has expired when it has brown or dark spots, a foul odor, sliminess, a mushy texture, and visible mold (white, blue, or green).
3. To preserve shrooms for longer, put them in a paper bag and then in the fridge (for fresh mushrooms) or dry them in the sunlight and then store them in a mason jar. 
4. Alternatively, you can buy shroom-infused capsules or teabags, which will also last longer than leaving fresh mushrooms unattended. 

What Makes Shrooms Expire? 

Before you get carried away with the wonder that shrooms can do, remember that they are prone to mold growth and rot. And what actually causes a shroom to expire is decomposition and degradation from improper storage. 

• Decomposition: If you don’t store shrooms in a drier environment, bacteria and mold can decompose them, causing rot. This type of expiration comes with a health hazard because bacteria and mold release toxins that are harmful to the body. 
• Degradation: Even when you try to store shrooms in a suitable environment to prevent rot, over time, the active compound in the shroom, psilocybin, will break down, especially when exposed to heat, UV light, or oxygen. This will reduce the effectiveness of the psychedelic. 

Note: 

• When the shroom doesn’t rot but has degraded, it can still be safe to consume, but it’s a recipe for a bad trip. 

With this in mind, it’s important to know how to distinguish between a shroom that’s just lost some potency and one that’s actually rotten.

So, knowing the signs to look out for when checking mushrooms for expiration is more important. 

How Do You Know Your Shrooms Have Expired?

Changes in color (often darkening spots), mold growth, unpleasant odor, and a slimy texture are common signs of a bad shroom.

But remember, some shrooms, like Liberty Caps, are naturally slimy (sticky) when fresh. So you want to know what these signs actually look like. 

Let’s break it down:

1. Color changes or looks darker: Fresh mushrooms usually have a uniform color, whether white, brown, or another hue, depending on the type. When mushrooms spoil, they can darken or have discolored spots.

2. Slimy texture: As mushrooms degrade, a mucus-like substance accumulates and breaks down the mushrooms’ tissues. When you touch or handle the mushrooms, they will feel excessively slippery or slimy.
3. Mold growth: Mold can appear as fuzzy patches or spots on the surface of mushrooms. It is usually white or green but can also appear blue or black, depending on the type of mold.

4. Nasty smell: Another telltale sign of a spoiled shroom is the awful smell oozing from it. The scent is like ammonia or rotten food. Fresh mushrooms have a mild, earthy aroma. 

How Long Do Shrooms Stay Before They Expire? 

How shrooms are prepared and stored greatly affects how long they last before expiring. It also depends on whether it’s dried, fresh, or edible mushrooms.

In the table below, we explain further how long each shroom form can last before it begins to turn bad: 

Shroom form	How Long It Can Last
Fresh shrooms	How Long Can It Last
Dried shrooms	6–12 months
Microdose capsules	12–18 months
Shroom chocolates	12–18 months
Shroom honey	2–3 years

If the environment is at room temperature, fresh mushrooms will only last 1 to 2 days. It lasts up to 5 days when stored in the refrigerator.

While dried shrooms last up to 12 months, they’re best used within the first month. 

Also, consider the expiration date written on edible mushrooms because the length of their life depends on the kind of magic mushrooms used in making them. 

Pro Tip: 

• Shroom honey has the longest shelf life. But when stored in a mason jar with dry packs, dried mushrooms can stay good for a very long time, even up to 2 years.

Can I Consume Expired Shrooms?

It’s unsafe to consume expired shrooms. Once you’ve examined your shrooms and noticed all the signs explained above, toss them out and grab some fresh ones. 

Eating moldy or bacteria-laden magic mushrooms can cause nausea, vomiting, diarrhea, and other stomach troubles. 

Even if they look okay but have been poorly stored for too long, the psilocybin must have broken down.

Going ahead and consuming it could still lead to a disappointing trip or, worse, a really bad one where you experience nausea, vomiting, diarrhea, and other stomach troubles.

Note: Just because your mushrooms are old doesn’t mean they’ve expired. 

If you don’t see any bad signs and have stored them properly and away from moisture, your old shrooms are still fine.

So, what are the proper ways to store shrooms to extend their shelf life? 

Best Ways to Preserve Shrooms So They Last Longer 

The best way to preserve your shroom so it lasts longer depends on whether it’s fresh or dried. 

Fresh shrooms

For fresh mushrooms, it’s best to store them in a container. Before tossing your shrooms into just any container, ensure the container ticks this checklist: 

• Does it minimize exposure to oxygen? 
• Can storage discourage heat? 
• Does it prevent UV light from penetrating? 
• Does it minimize exposure of the shroom to bacterial or fungal spores? 

Pro Tip: 

• UV lights include sunlight, tanning beds/lamps, and some halogen, fluorescent, and incandescent lights.

Dried shrooms

You can store dried mushrooms in a mason jar or ziplock bags with a food-safe desiccant packet. 

Keep the airtight bag in a cool, dark place. 

Edible shrooms

If you’re particular about preserving the potency of the shroom, it’s best to store it in edible form, such as infusing it in chocolates. To achieve this: 

Step 1: Dry the shroom such that it’s void of moisture

Step 2: Grind the shroom into powder using a coffee grinder

Step 3: Mix the shrooms with chocolate and store in a cool, dark place. 

Pro tip: 

• Alternatively, you can submerge the dried mushrooms in honey for long-term storage.

The Bottom Line 

Magic mushrooms will surely go bad over time. When that happens, they’re considered expired and unsafe to use. 

If you have shrooms stored for a long time, look for mold growth, discoloration, slimy texture, and foul odor before consuming them. 

Want your shrooms to last longer? We suggest shroom-infused products instead of fresh ones. These have a longer shelf life and stay potent.

At Schedule35, we offer high-quality, shroom-infused goodies, including capsules, chocolates, and flavored teas—perfect for microdosing. Check out our collection today.

1. Unexpected Changes in Texture: If your shrooms aren’t considered firm and instead feel excessively dry or unusually spongy, this indicates poor mushroom storage conditions. The ideal texture should be consistent and indicative of either properly dried or fresh mushrooms. Proper storage can significantly extend their shelf life.

2. Excessive Drying Out: While drying shrooms is a method to extend their shelf life, overly dried mushrooms can crumble into powder with minimal handling. Properly dried mushrooms should retain some flexibility and not turn to dust. When you store your shrooms, ensure they are not overly dried to preserve their integrity.

3. Insect Infestation: Improperly stored mushrooms can attract insects, such as pantry moths or beetles. If you take shrooms and notice any signs of insect activity, including tiny holes or webs, your shrooms aren’t considered safe and should be discarded immediately. Good mushroom storage practices are essential for keeping them free of pests.