Rye Grain / Rye Berries are the most preferred grain for mushroom substrates. This substrate is perfect for mushroom growing. It has been used for decades by both hobbyists as well as commercial growers. Mushrooms and mycelium of many species thrive off of their superb nutrient content.
What is sterilized rye berry?
The rye berries are moisture content guaranteed and fully sterilized. The four quart jars come fully hydrated and sterilized ready to inoculate right out of the box. Simply inject 2-4 cc of gourmet mushroom spore solution or liquid culture into your jars and shake.