Grow Master Sterile Grain

Forij Mycelium

Grow Master Sterile Grain

Sale price$25.00



Connect with your food in a way you never have before! Not only will you get the freshest possible gourmet mushrooms, including species not available at your local grocery, but you will cultivate something with your own hands in the comfort of your home. Take pride in knowing that you actively grew your food, while simultaneously leaping into the vast world of mycology. You will experience first-hand the journey a fungus takes to produce mushrooms and marvel at its beauty. Then, of course, you can enjoy delicious mushrooms. The block will produce multiple flushes so you can do it all over again.

Grow Master Sterile Grain gives you the freedom to choose your genetics and create grain spawn using the species of your choice. Grain spawn can be used to inoculate hardwood substrate, manure-based substrate, etc. depending on the mushroom species. The world is your Oyster! Or Pioppino or Lion’s mane- the list goes on!

  • 3.5lbs of sterile, perfectly hydrated whole oats.
  •  Includes self-healing injection port for liquid culture injections. 
  • Indefinite shelf life!
  • Use with Forij liquid culture or Petri dishes.
  • *Mushroom culture not included. 
  • Read the detailed Liquid Culture Inoculation Protocol here.

Processing Times

We're committed to the integrity and quality of our products. Growing mushrooms involves working with a biological organism that is constantly growing and needs maintenance. That's why all of our mushroom cultures are made to order, with care and dedication. Your lead times will reflect fungi incubation times, depending on which cultures we have readily available and which we need to expand for you when we receive an order. Our team works hard to prepare and pack your orders as quickly as possible--we appreciate your patience, and we are committed to the success of your mushroom cultivation project.

Current lead times are as follows:

Sterile substrate: In stock, no delay.
Grow Kits: 7-10 business days
Grain Spawn: 1-2 weeks
Petri dishes: 1-2 weeks
Liquid cultures: 1-2 weeks

You will receive a shipping confirmation with tracking information once your order ships out. If you have an event planned or a specific date of inoculation in mind, please email