HomeMycology SuppliesGrow Jars 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 Mr Peanut $25.00 Buy now True Albino Cambodian $25.00 Buy now Blackhawk 7 $25.00 Buy now