How Long Do Mushrooms Last and How to Keep Them Longer?

This extensive guide provides you with all the information you need to know about how to store normal cooking mushrooms. It will also tell you how long magic mushrooms last in your system.

Regular Mushrooms

Mushrooms go with practically everything. Beyond their great flavour, they also are high in Vitamin D, have essential minerals like copper, and are a good source of protein.

So you might wonder how to keep these fungi fresher and really enjoy their taste and benefits!

Now, let’s be honest, who doesn’t hate buying fresh mushrooms and ending up having to throw them away in less than a week? We do.

This is why we’ve compiled a series of questions you might ask and their answers to help you keep these yummy mushrooms as fresh as possible!

Do Mushrooms Really Go Bad?

Simply put, yes. Mushrooms can go bad, and they will if you’re not careful.

You might not know how to keep them fresh for longer, especially since there is a big variety of mushrooms. And you should eat them fresh. Otherwise, they can be really dangerous.

They might rot and even go moldy if you keep them too long, as they grow bacteria. And nobody wants mold, it’s unpleasant to clean, and it can be really harmful to your health.

Mould can give you allergies and even respiratory problems.

So How Do I Know They’re Not Good Anymore?

There’s really no need to wait for the mushrooms to grow mold to toss your mushrooms.
Here are a few signs to be on the lookout for before you cook your mushrooms:

  • Smell: if they smell, toss them, no questions asked! But do mushrooms usually have a particular scent when fresh? No. So if they smell of anything, do yourself a favor, and get rid of them!
  • Wrinkles: it’s ok to have mushrooms a bit wrinkly, but if they’re too wrinkly and dry, don’t eat them. Better be safe than sorry.
  • Slime: if your mushrooms are slimy, it’s usually a sign that they’ve been in your fridge for too long. The slime doesn’t mean they’re necessarily dangerous, but you should still throw them in the bin.
    Or cook them quickly: just toss them in a pan with oil, spices of your choice, garlic, and/or onion.
  • Dark spots: if they get darker than when you bought them, or get dark spots, your mushrooms are going bad. Either use them when you notice the change of color or bin them.

How Long Do Regular Store-bought Mushrooms Last?

So to prevent all these previous signs, how do you know how long to keep them?
Firstly, you should always check their sell-by date. Then, you can base it on how long the mushrooms will last based on the date of purchase.

But, sometimes, mushrooms, just like other veggies, don’t have a sell-by date or use by date.

So here is how long store-bought mushrooms should last if stored properly:

  • Fresh whole mushrooms: 7 to 10 days from the date of purchase.
  • Cooked mushrooms: 7 to 10 days from the date of purchase. If you want to keep them for longer, just freeze them in an airtight container or plastic freezer bag.
  • Fresh sliced mushrooms: 5 to 7days from the date of purchase.
  • Dried mushrooms: 2 to 3 years after you dried them or bought them dried.

How to Store Them Properly

The first tip is to never wash them ahead of time. Wash them before using them, avoiding them to go bad.

Then, the best way to keep your mushrooms fresh and extend their shelf life is to store them in a sealed zip-lock plastic bag in your fridge, whole and unpeeled.

If you can, store them in paper bags, they will be less mushy than if stored in plastic bags. This will prevent them from spoiling and also becoming slimy so quickly.

As an extra tip, don’t put them in the vegetable drawer. This drawer would be too moist, which could spoil them. Also, don’t stack anything on top of your mushrooms, as they will damage and get bruised.

Or, if you want to keep them for longer, you could freeze them and keep them for six to eight months. Just cook them first, and when they have cooled down, store them in your freezer’s safe containers or bags.

They must cool before you store them to avoid freezer burn and burning what’s in your freezer. The same thing goes for storing them in the fridge after cooking them.

Not only will your mushrooms stay fresher and taste great if you store them properly, but avoiding and reducing food waste helps the environment, helps you eat healthier, and saves you that money!

Other Varieties of Mushrooms and How to Store Them

There are several types of mushrooms you can eat, and the type of mushroom will change the freshness and how long you can keep it.

The most common cooking mushrooms include white button, shiitake, cremini, and portobello. They are the same, despite their different looks and age.

White button mushrooms are the freshest and youngest, whilst cremini and portobellos are matured a long time. Shiitakes are either eaten fresh or dried to make your dish more intense.

This is all very nice, but how fresh do they stay, and how do you store them?

Simply use the guide above. If you’re looking to store another kind of mushroom, these rules will also generally apply unless your seller states otherwise.

But if they don’t come from a store, please don’t eat them, just to be safe.

What to do If You’ve Eaten a Bad Mushroom

Sometimes, you just eat a bad mushroom. It happens.

To avoid this situation happening, you should eat mushrooms only you’ve bought from your supermarket, store, or a trustworthy source.

If you followed all the previous recommendations (see above), you shouldn’t get food poisoning from a supermarket or store mushroom. But, if unfortunately, this happened to you, you should consult your local doctor or call your emergency line.

Here are two things you can do to avoid food poisoning, on top of storing them properly and eating them in due time:

  • Don’t leave your mushrooms out for too long after you’ve cooked them. If you leave them for hours outside before putting them in the fridge, they could cause you stomach problems when reheated.
  • Always clean mushrooms before eating them and store them properly in the fridge or freezer. Don’t leave them out, or they’ll get spoiled, and it will upset your stomach or make you sick.


Store your mushrooms in the fridge, fresh and whole, or cooked in plastic containers or paper bags. Generally, they’ll stay good, from the date of purchase and last 7 to 10 days.

Store them in the freezer after cooking them for the mushrooms to last longer, up to six months.

Never wash mushrooms ahead. Wash them just before you cook them. And never store them at room temperature, or they’ll go bad.

If something looks or smells funny, throw it away!

Psychedelic Mushrooms

Magic mushrooms, or shrooms, are a group of fungi with psilocybin used for their hallucinative effects. Psilocybin is a natural psychedelic, also known as a hallucinogen, which is a “class of psychoactive substances that produce changes in perception, mood and cognitive processes.”

So, it affects the senses and alters a person’s emotions and sense of time and space. But, they can also open a new dimension and leave you relaxed and euphoric.

This is what made them so popular since the 1960s, as they can help your mental and spiritual wellbeing.

The following section will help you know everything you need to know about psychedelic mushrooms and how long a trip lasts.

What do Shrooms Look Like, and are There Several Types?

They look just like regular mushrooms. But believe me, you’ll feel a difference!

There are several varieties, from 75 to 200 different ones! But here are the three common ones:

  • Psilocybe cubensis or “golden cap”. It is often in humid conditions and has a red/brown cap and a white or yellow stem.
  • Psilocybe baeocystis or “bluebell”/”bottle cap.” They tend to grow on rotting logs and mulch. They also have a brownish cap.
  • Psilocybe semilanceata or the “liberty cap.” This is the easiest type to find and is widely available. It has a pointy cap, is yellow or brown, and likes to grow in damp fields.

How to Use Them

You can either eat them as they are, cook them, or mix them with other food. Or you could ingest them in capsules, tablets, or even dissolved in water. You can even have it in a tea.

The dried mushrooms (in capsules or tea) are also sometimes mixed with cannabis or tobacco.

To start with, use a small dose and build your way up.

How Long Until You Feel the Effects?

Usually, you can feel them after 30 minutes, but it depends on how you ingest the shrooms.

If you have them as a tea infusion, the effects can come after only five to ten minutes.

Just be patient! Don’t grab a second dose if it’s not strong enough. You’ll just have to augment the dose next time.

How Long Do the Effects Last?

Typically, the effects last from four to six hours, but it may be longer for different people. After your trip, effects may last for a day, depending on your body and the dose you took.

Try to relax and stay calm during your trip, and be in the presence of people you trust. You can’t stop a trip once it’s begun, so just enjoy the ride!

You’ll feel the most effects after two to four hours after ingestion, which will them readjust to your usual state after the six hours mark. Of course, all of this depends on several factors, which are listed below, in the next section.

Most bodies eliminate the magic mushrooms from their system within 24 hours, so they won’t show up in a drug test after that.

Try to ingest them on a day where you don’t have work and where you can relax, and feel a bit tired or overstimulated the next day. Make sure you get enough sleep, at least eight hours, the night after the experience, to fully recuperate.

How Do You Avoid a Bad Trip?

The length of a trip and the severity of the effects depends on several factors, which include:

  • How much you take (the more you take, the longer they’ll stay in your system)
  • Your age and tolerance level (the older you are, the more the shrooms will stay in your body)
  • Your type of body (water content, weight, metabolism, Body Mass Index)
  • If you take dried shrooms (which are more potent than fresh ones)
  • If you have a mental or physical condition
  • The kind of mushroom you take
  • How you ingest it (if you have it with a lot of food, it will take longer to digest it. So the effects will last longer)
  • If you’ve mixed other substances (for example, alcohol, it will last longer and can appear in a drug test)

If you’re having a bad trip, just remember this is not your normal state, breathe and seek someone to be around until it’s over.

Can You Get Them Out of Your System Sooner?

No. Just drink lots of water, but they will appear in a drug test for 15 hours after ingestion and longer if you mix them with another substance.


Shrooms are great if used well. They will take 30 minutes to act after ingested, or five to 10 minutes if you mix them in a tea.

Be sure that magic mushrooms are right for you, physically and mentally.

Always surround yourself with supportive, positive people you can trust.

Start with a small dose, and consult professionals if you have doubts.


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