Mushroom Grain Spawn
Fungi Perfecti's Grain Spawn comes in two forms. The first is a first- or second-generation Grain Master in a reusable 1-gallon glass jar fitted with an autoclavable lid and Synthetic Filter Disc (approximate yield per jar: 2/3 gallon). The second is a first- or second-generation Grain Master in a disposable Spawn Bag with Filter Patch (approximate yield per bag: 1.25–1.5 gallon). Each Grain Master can be expanded to up to 1000 times its mass.
Please note: unlike our ready-to-grow Mushroom Patches and Plug Spawn, our Grain Spawn does not come with instructions. It is up to the purchaser to familiarize him/herself with the techniques of sterile mushroom tissue culture to properly use these products. The books Growing Gourmet & Medicinal Mushrooms and The Mushroom Cultivator are essential texts in this field.
When you place an order for Fungi Perfecti's Pure Mushroom Grain Spawn, you will be required to read and acknowledge a Sale Agreement prior to delivery. The text for this agreement is available for viewing online: