Sterile Grain & Substrate

Check out our quantity options—buy more, save more! Enjoy discounts on bulk purchases and maximize your savings today!
Preparation and Storage

  1. Resting Period: Allow a 7-10 day resting period for all supplies before use, whether newly prepared or acquired.
    • This crucial step helps ensure material sterility, which is essential for success.
  2. Storage Conditions: 
    • Temperature: Maintain 70-75°F (21-24°C) Control the room, never use incubators
    • Humidity: Keep between 40-60%
    • Note: Conditions outside this range may affect colonization and fruiting rates.
  3. Proper Placement:
    • Do not store bags in shipping boxes.
    • Place them on a clean shelf for observation.

Quality Assurance

  • At aPlusGrain, we prioritize product sterility.
  • If you notice any issues during the resting period, before inoculation, please contact our team.
  • For assistance, send a video of:
    1. The concerning area
    2. Entire Bag
    3. The injection port

We're committed to resolving any problems and ensuring your mycology journey is successful.


All of our products include FREE SHIPPING!  If you need help inoculating your bags, please visit https://youtube.com/@aPlusGrain

7 products