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Not So Simple Mushroom Substrate 

Our expertly formulated mixture of coco coir, vermiculite, gypsum, worm castings, azomite, and erythritol provides the ideal conditions for your cultures to flourish. It arrives fully hydrated and prepared for immediate use.

Key Benefits:

  • Promotes healthy mycelial development and nutrient uptake.
  • Enhances mushroom growth.
  • Provides essential nutrients.
  • Contains over 70 trace minerals..

Product Features:

  • All Substrates are made in Unicorn XLS-A bags.
  • Vacuum Sealed in a second 4mil bag for guaranteed sterility.
  • Shelf life: Guaranteed sterility for up to 2 months.

Simple to Use:  Mix it with your favorite grain spawn, and watch as your mycelium takes hold and your gourmet fungi start to fruit.

Storage: Store between 45°F and 70°F to maintain product quality.

Need Help? Hit that chat button at the lower right! 

Legal Disclaimer: We assume no responsibility for your usage of the product. Sales are final, and concerns will be addressed on a case-by-case basis.


Substrate Quantity Discounts

Buy Save pay
5 or more 5% off $9.50
10 or more 10% off $9.00
20 or more 15% off $8.50
We have more than 10 in stock
Regular price $10.00
Regular price Sale price $10.00
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Unlock the Secret: What's Inside Your Substrate

  • Coco Coir

    Coco coir is popular in mushroom substrate for its excellent moisture retention and aeration, supporting optimal mycelium growth. Its pH level encourages mushroom growth while minimizing contamination. Plus, it's eco-friendly, sustainable, and biodegradable. Overall, coco coir provides an ideal environment for mushroom cultivation, making it a top choice for growers.

  • Vermiculite

    Vermiculite is crucial in mushroom substrate for maintaining ideal moisture levels, preventing compaction, and stabilizing pH, all vital for successful mushroom cultivation. Its multifaceted benefits create an optimal environment for robust mycelium growth and fruitful mushroom production.

  • Worm-Castings

    Worm castings, or vermicompost, enrich mushroom substrate with essential nutrients and beneficial microorganisms, promoting robust mycelium growth and abundant fruiting. Their porous texture fosters optimal conditions for mushroom cultivation, enhancing substrate quality and resulting in improved yields and quality.

  • Azomite

    Azomite enriches mushroom substrate with essential minerals, supporting healthy mycelium growth and robust fruiting. Its natural composition enhances substrate structure, promoting optimal aeration and moisture retention for improved mushroom development. Overall, Azomite is a valuable addition to substrate, ensuring nutrient-rich conditions for successful cultivation.

  • Gypsum

    Gypsum benefits mushroom substrate by improving soil structure, providing essential nutrients, and aiding in moisture retention. It prevents compaction, supports healthy mycelium growth, and regulates pH levels, creating an ideal environment for mushroom cultivation. Overall, gypsum enhances substrate quality, leading to improved yields and successful mushroom production.

  • Reverse Osmosis Water

    Reverse osmosis (RO) water is ideal for mushroom substrate because it's free from contaminants and minerals that might hinder mycelium growth. Its purity ensures a clean hydration source, preventing substrate imbalance and promoting optimal conditions for mushroom development. Overall, RO water enhances substrate quality and maximizes mushroom yields.