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Kickstart your grow with High-Quality Grain Spawn.
Perfectly Prepped for Your Growing Success Whether you're a home grower or a commercial cultivator, our sterilized grain spawn bags and jars are the ideal foundation for healthy, thriving mushrooms.
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Simplify Your Mushroom Cultivation with All-In-One Grow Bags.
Everything You Need in One Bag Streamline your growing process with our pre-mixed, sterilized all-in-one grow bags. Perfect for beginners and seasoned growers alike, these bags are designed for convenience and high-yield results.
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Cultivate Excellence with our Gourmet Liquid Cultures.
Oyster, Lion’s Mane, Reishi, Shiitake, and More Take your mushroom cultivation to the next level with our premium liquid cultures. Designed for optimal growth and superior yields, these gourmet strains deliver on quality and flavor.
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Supplier of All in one Grow bags, BRF Jars, Grain Spawn, Bulk Substrates, Mushroom Cultures and more!

Why Shop With Us

Easy to Grow

Our easy-to-follow instructions ensure success, whether you're a novice or a seasoned grower.

Premium Quality

Our products use only the finest organic materials and are proven for maximum yields. We're so confident we offer a growth guarantee!

Fast Shipping, Convenient Delivery

Get your products quickly and easily with our reliable shipping options. We deliver right to your door, so you can start growing sooner.

Sustainability

We're committed to eco-friendly practices and supporting the mushroom growing community. Join us in cultivating a greener future!

Check out our products!

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Customer Reviews

★★★★★ 5/5

"I’ve been using supplies from That Mushroom for several months, and the difference is clear. The substrates are fresh, leading to healthier and more productive mushroom growth. Reliable and high-quality—definitely worth the investment!"

Laura B.
★★★★★ 5/5

"That Mushroom has become my go-to for all my mushroom growing needs. Their supplies are consistently good, and I’ve seen a noticeable improvement in my yields. The quality and customer support are top-notch. Highly satisfied!"

Mark E.