XL 0.5 Micron Filter Patch Mushroom Grow Bags

10 bags
$14.99

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These autoclavable mushroom grow bags are our go-to for indoor mushroom cultivation and spawn production. Bags are made of 3 ml thick polypropylene plastic and are designed to withstand high temperatures. The 0.5 micron filter also allows for ample gas exchange. These bags are durable and clear enough to make monitoring growth easy and can be sealed with an impulse sealer, or just be tied to the seal.

Recommended use (substrate/spawn):

  • Fill half way, then fold the bag over twice.
  • Make sure the filter is not obstructed.
  • Be careful not to spill any substrate on the upper regions of the bag. If you do, wipe clean.

Recommended use (log incubation):

When growing chicken of the woods and hen of the woods on logs, we strongly recommend sterilizing 8" by 8" segments of oak log in a pressure cooker or steam sterilizer before inoculation. Incubate your sterilized log segments for a few months in XL sealed filter patch bags until they are completely colonized. After colonization period, logs should be removed from bags and partially buried under 2 inches of top soil. The mushrooms will fruit from logs and emerge out of the soil.

Frequently Asked Questions

We recommend absolute beginners start with our Spray & Grow Kits, which make growing mushrooms at home super easy.

We want you to have the best possible experience with every North Spore product and guarantee free replacements within 30 days of receipt for any damaged, contaminated, or unusable product.

Absolutely! Mushroom cultivation is a great activity to do with the whole family, whether you'd like to grow indoors or outdoors. If you're new to mushrooms, we recommend starting with a Spray & Grow Kit or a Plant & Grow Kit – both make it easy to grow fresh, organic mushrooms at home.

We are vertically integrated — from culture work all the way to spawn and substrate production — ensuring a quality end product. And our staff mycologists keep up to date on all best practices in our field. Additionally, we have a dedicated QAQC team that tests every batch of grain and substrate before it’s inoculated.

Cluster of brown-capped mushrooms with long, light-colored stems against a white background.

Your Trusted Source for Premium Mushroom Growing Supplies

Whether you’re growing mushrooms at home, in your garden, or at a commercial scale, we offer everything you need to cultivate success. We start with the highest-quality OMRI-listed ingredients, mix them in our state-of-the-art facility, and inoculate them in our custom-built lab, so you can rest easy knowing your product will yield the best results.

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