Grow Kits Without Mycelium: Sterilized Bags for Total Cultivation Control

Updated March 2026 · 6 min read

The All-in-One Grow Bag: Our Grow Kit Without Mycelium

The All-in-One Mushroom Grow Bag is the easiest way to grow mushrooms without a pre-colonized kit. It combines sterilized corn spawn and a substrate layer in a single sealed bag with a 0.2 µm filter patch and a self-healing injection port. You inject your spores or liquid culture through the port, wait for the grain layer to colonize, mix it into the substrate, and let the mushrooms fruit — all inside the same bag.

Because the bag stays sealed from inoculation through colonization, the risk of contamination drops dramatically. There is no transferring grain to a separate tub and no need for a still-air box during the bulk phase. This makes the All-in-One Grow Bag ideal for beginners who want to go beyond a standard ready-to-grow kit and for advanced growers who want a fast, low-effort setup.

Spawn Bags and Substrate for Grow Kits Without Mycelium

Prefer a two-bag monotub setup instead of an all-in-one approach? We sell sterilized spawn bags and substrate bags separately. First you colonize a spawn bag with your spores or liquid culture, then you mix that colonized grain into the substrate bag inside a monotub. This method gives you more control over ratios and is popular among experienced cultivators.

Browse everything on our Sterilized Grain & Substrate Bags category page.

Why Choose Grow Kits Without Mycelium?

There are several reasons to choose sterilized bags over a colonized grow kit:

Add Your Own Spores or Liquid Culture

After picking your sterilized bag, you need a source of mushroom genetics. We offer both options in our shop.

Spore Vials and Syringes

Spore vials contain microscopic spores suspended in sterile solution. Inject them through the self-healing port on any of the bags listed above. We carry a large selection of Psilocybe cubensis strains on our spore vials & syringes page. For a detailed guide on how to work with them, read our spore vial guide.

Liquid Culture

Liquid culture contains living mycelium in a nutrient solution. Because the mycelium is already active, colonization starts much faster than with spores — no germination phase needed. If you don't have liquid culture yet, you can make your own or buy ready-to-use syringes from our shop. We stock Cloud920 liquid cultures for a wide range of cubensis strains, plus a dedicated Reishi liquid culture syringe for medicinal mushroom cultivation.

Not Just for Magic Mushrooms

One major benefit of grow kits without mycelium is their versatility. You choose what goes in, so you can cultivate far more than Psilocybe cubensis. Gourmet species like shiitake and oyster mushrooms thrive on grain spawn, and medicinal mushrooms such as Reishi, Lion's Mane, and Chaga are popular choices. The same Sterile Corn Spawn Bag or Sterile Millet Spawn Bag works for all of them.

Curious about spore-based cultivation in general? Our article on growing mushrooms from spores covers the full process from inoculation to harvest.

Instructions and Getting Started

We keep detailed written guides for every product. Visit our instructions page for step-by-step walkthroughs on the All-in-One Grow Bag, spawn bags, and substrate bags. New to mushroom cultivation? Read our article on how to grow your own magic mushrooms for a beginner-friendly overview, or check out Mycelium Explained to understand the biology behind it all.