Frequently Asked Questions

Using the Magic Bag is simple. Inject your liquid culture or spores into the mushroom grow bag. Keep the bag in a warm, dark environment with no light (between 72 and 80 degrees is ideal). Wait a week or two.

Once the bag starts turning white (that stuff’s called “mycelium”), give it a shake to make sure the mycelium spreads throughout the whole bag. Wait another few weeks.


Once the bag turns completely white, your mycelium are ready to become mushrooms. Cut the bag open to give them some air and a little light (a few mists of water from a spray bottle every few days helps too). Pin the side of the bag with the provided paper clip so it’s loosely closed with enough room for a little air to seep in. Your Magic Bag should start producing mushrooms in another week or two. Pick them right before the cap separates from the stem. Your mushroom grow bag will keep producing mushrooms for another week or so (each crop of mushrooms is called a “flush” – your Magic Bag should produce 2 or 3 flushes). Once it’s done producing mushrooms the insides of the bag can be composted and the plastic bag can be recycled at a designated soft plastics recycling bin.

Yes, though the Magic Bag differs from a typical “shroom grow kit.” The Magic Bag is simpler and easier to use. Typically, kits contain tubs to transfer the mushrooms during the fruiting process. Magic Bag streamlines this process by allowing the user to fruit in the bag and avoids the possible contamination that could arise during the fruiting transfer process.

We ask customers to follow all their local laws regarding the cultivation of mushroom strains. With that disclaimer out of the way, we can say that the Magic Bag can grow any “dung-loving” mushroom species.

The all-in-one design of the Magic Bag is different from typical mushroom growing methods that have many disparate parts and separate fruiting tubs. The Magic Bag simplifies and streamlines the shroom growing process.

Your Magic Bag should be injected with spores or liquid culture within 1 week of receiving it. Our bags are sterilized in an autoclave right before they leave our facility but the sterility starts to wane with each passing day. If you’re not going to use your mushroom grow kit within a week you can store it in a fridge for up to 3 weeks – but remember, the sooner you inject spores or liquid culture, the better. The more time that goes by, the more risk there is for contamination (which would ruin your grow).

Unfortunately you can’t reuse our mushroom grow bags. Once it’s done producing mushrooms the inside of the bag can be composted and the plastic bag can be recycled at a designated soft plastics recycling bin. But remember to pick your mushrooms and let your bag keep producing mushrooms. It will produce 2 or 3 “flushes” (aka ‘crops’) of mushrooms.

We recommend using liquid culture. They are more resilient to contamination, grow faster, and the genetics can be isolated in a way that spores cannot. Reach out to us at [email protected] for a list of liquid culture and spore vendors.

You should inject 5 CC’s (mL) of spores or liquid culture into your Magic Bag. Too little, and there won’t be enough material to latch on and grow. Too much, and the substrate will become too damp and become susceptible to mold and mildew.

There’s 3 forms of contamination to look out for. The easiest to spot are blue/green patches called trichoderma. The second one is called bacillus, aka “wet spot” or “sour rot.” With bacillus you’ll notice a mucus-like wetness in your bag and the grain will become a dull gray color. This is usually accompanied by a rotting sour smell. Lastly, cobweb mold can be difficult to spot because it looks similar to mycelium. It can be gray, white, and fluffy. But it typically grows whispier, fluffier, and lighter than mycelium – hence the name “cobweb” mold. If you suspect contamination in your bag, take some pictures and send them to us at [email protected]. If it’s indeed contamination, we’ll send you out a replacement bag, free of charge.

Grow times will vary depending on the strain you’re using but typically your bag should start to produce mushrooms by the 8-10 week mark. Colder temperatures will prolong growing time

Our bags will produce around 2 to 3 ounces of dried mushrooms. For slightly higher yields, you can transfer your bag contents into a tub to fruit (fruiting is the last stage of the growing process when actual mushrooms are produced). We recommend fruiting right in the bag though, as the bags are designed for this. It’s also easier (less hassle) and there’s less chance for contamination.

If you have any other questions, please don’t hesitate to reach out to us at [email protected].


Mush Love!

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