HomeMycology SuppliesGrow Jars “TW x APE” has been added to your cart. View cart Grow Jars Grain jars are used to cultivate and store beneficial fungi before introducing them to the growing medium. Category: Mycology Supplies Tags: Grow Jars, Mycology Supplies Product ID: 29748 Description Description Grain jars are used to cultivate and store beneficial fungi before introducing them to the growing medium. Related products Blackhawk 7 $25.00 Buy now AEG Revert: Chocolate Gill $25.00 Buy now Mr Peanut $25.00 Buy now