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All in One Mushroom Grow Bag for Multiple Flushes

All in One Mushroom Grow Bag for Multiple Flushes

$32.00 USD
$32.00 USD
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Five pounds of pressure-sterilized substrate and grain in one bag. Our HB4 formula runs 50/50 millet and rye spawn layered with coco coir, vermiculite, gypsum, and worm castings, and other nutrients, balanced to pH 6.0-6.5. No pressure cooker. No still air box. Just inject your spores or liquid culture through the self-healing port, let it colonize, and harvest.

We batch-test every bag before it ships. The Unicorn 10T-injection, .2 micron filter patch handles gas exchange throughout colonization and fruiting. Most growers see their first flush in 6 to 12 weeks. The bag supports 3 to 5 flushes total.

If your bag arrives contaminated, or contaminates before you inoculate it we replace it. That's our contamination guarantee.

Almost Gone — Going Fast

📦 What’s in the Box

  • 2 lbs Premium MultiGrain Matrix (50/50 millet & rye blend)
  • 3 lbs HB4 Substrate with worm casting technology
  • Professional-grade Unicorn bag with 0.2 micron filter
  • Self-healing injection port
  • Detailed cultivation guide
  • Access to our Growers support

📈 Specs & Yield

  • Bag Dimensions: 8″ × 5″ × 24″
  • Total Weight: 5 lbs (2 lbs grains + 3 lbs substrate)
  • Dry Yield: 1–2 oz per bag
  • Flushes: 3–5 consistent harvests

*Performance Disclaimer

🗄️ Storage & Handling

  • Store upright at 60–70 °F, away from direct sun
  • Keep sealed in original packaging
  • Use within 3 months for peak performance
  • 🚫 Do not refrigerate
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Decorative Separator

How to Use:

Storage

Free Contamination Return Program

Decorative Separator

Step 1:

Inject Your Spores

Take your liquid culture or multi-spore syringe and inject through the bag’s injection port. In about a week, you’ll notice mycelium forming around the port.

Step 2:

Break and Mix

When the mycelium reaches roughly 1 ½ inches around the injection site, gently break it up and mix the contents so mycelium spreads evenly through the grains and substrate.

Step 3:

Lay Flat for Colonization

Lay the bag flat and leave it undisturbed. Watch as the mycelium spreads until the entire substrate is white.

4d icon a fullu inoculated fast growing easy to use all in one bag

Step 4:

Shape the Brick and Initiate Fruiting

Once fully colonized, reshape the substrate into a brick. Prop the bag upright.

Soon mushrooms will emerge directly from the bag.