Home / Product shipping classes / Free Shipping Free Shipping Default sorting Sort by popularity Sort by average rating Sort by latest Sort by price: low to high Sort by price: high to low Showing the single result Mushroom Grow Jars5.00 out of 5 These jars WILL NOT break in transit because they are made from tempered, High-Density PE… Poly-Ethylene, NOT GLASS. The Mushroom-Mycelium Jars are designed for growing your favorite edible grain loving mushrooms. Select options