Mushroom Grain Spawn

Fungi Perfecti's Grain Spawn comes in two forms and each Grain Master can be expanded to up to 1000 times its mass.

Fungi Perfecti's Grain Spawn comes in two forms and each Grain Master can be expanded to up to 1000 times its mass.

Learn more about Mushroom Grain Spawn +

Fungi Perfecti's Grain Spawn comes in two forms. 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. Certified Organic by the Washington State Department of Agriculture. Each order is custom-made: lead time for grain spawn is 6–8 weeks from date of order.

Please note: unlike our 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.
Terms of Use of Fungi Perfecti's Grain Spawn 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:

An Important Note for our Customers in the Hawaiian Islands

The Hawaii State Department of Agriculture has recently increased their restrictions on the importation of live mushroom mycelium into the islands. This affects the sale of Fungi Perfecti's Indoor and Outdoor Mushroom Patches, Plug Spawn for Log and Stump Cultivation, and Pure Mushroom Spawn and Cultures. Customers in Hawaii wishing to purchase any of these products will need to first apply for and receive an Import Permit from the HSDA Plant Quarantine Branch. Additionally, importation of our MycoGrow™ products is completely prohibited.

The permit can be downloaded in Adobe Acrobat format online here. If you have further questions, you can contact Fungi Perfecti or speak directly to Will Leon-Guerrero at the Hawaii State Department of Agriculture, 1428 S. King Street, Honolulu, HI 96814. Phone: (808) 832-0566.

Lion's Mane Grain Master Jar
Out of Stock

Lion's Mane Grain Master Jar

$69.00

We have temporarily discontinued our Plug Spawn and Grain Spawn to focus on our immune support products. Learn more here. Latin Name: Hericium erin...

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$69.00
Out of Stock
Lion's Mane Grain Master Bag
Out of Stock

Lion's Mane Grain Master Bag

$69.00

We have temporarily discontinued our Plug Spawn and Grain Spawn to focus on our immune support products. Learn more here. Latin Name: Hericium erin...

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$69.00
Out of Stock
Blue Oyster Grain Master Bag
Out of Stock

Blue Oyster Grain Master Bag

$69.00

We have temporarily discontinued our Plug Spawn and Grain Spawn to focus on our immune support products. Learn more here. Latin Name: Pleurotus ost...

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$69.00
Out of Stock
Pearl Oyster Grain Master Bag
Out of Stock

Pearl Oyster Grain Master Bag

$69.00

We have temporarily discontinued our Plug Spawn and Grain Spawn to focus on our immune support products. Learn more here.Latin Name: Pleurotus ostr...

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$69.00
Out of Stock
True Morel Grain Master Bag
Out of Stock

True Morel Grain Master Bag

$69.00

We have temporarily discontinued our Plug Spawn and Grain Spawn to focus on our immune support products. Learn more here. Latin Name: Morchella esc...

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$69.00
Out of Stock
Pearl Oyster Grain Master Jar
Out of Stock

Pearl Oyster Grain Master Jar

$69.00

We have temporarily discontinued our Plug Spawn and Grain Spawn to focus on our immune support products. Learn more here. Latin Name: Pleurotus ost...

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$69.00
Out of Stock
Pink Oyster Grain Master Jar
Out of Stock

Pink Oyster Grain Master Jar

$69.00

We have temporarily discontinued our Plug Spawn and Grain Spawn to focus on our immune support products. Learn more here. Latin Name: Pleurotus dja...

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$69.00
Out of Stock
Shiitake Grain Master Jar
Out of Stock

Shiitake Grain Master Jar

$69.00

We have temporarily discontinued our Plug Spawn and Grain Spawn to focus on our immune support products. Learn more here. FP's ready-to-inoculate, ...

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$69.00
Out of Stock
Shiitake Grain Master Bag
Out of Stock

Shiitake Grain Master Bag

$69.00

We have temporarily discontinued our Plug Spawn and Grain Spawn to focus on our immune support products. Learn more here. FP's ready-to-inoculate, ...

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$69.00
Out of Stock
Black Morel Grain Master Bag
Out of Stock

Black Morel Grain Master Bag

$69.00

We have temporarily discontinued our Plug Spawn and Grain Spawn to focus on our immune support products. Learn more here. Latin Name: Morchella ang...

View full details
$69.00
Out of Stock
Pink Oyster Grain Master Bag
Out of Stock

Pink Oyster Grain Master Bag

$69.00

We have temporarily discontinued our Plug Spawn and Grain Spawn to focus on our immune support products. Learn more here. Latin Name: Pleurotus dja...

View full details
$69.00
Out of Stock
Blue Oyster Grain Master Jar
Out of Stock

Blue Oyster Grain Master Jar

$69.00

We have temporarily discontinued our Plug Spawn and Grain Spawn to focus on our immune support products. Learn more here. Latin Name: Pleurotus ost...

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$69.00
Out of Stock
Reishi Grain Master Bag
Out of Stock

Reishi Grain Master Bag

$69.00

We have temporarily discontinued our Plug Spawn and Grain Spawn to focus on our immune support products. Learn more here.Latin Name: Ganoderma luci...

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$69.00
Out of Stock
True Morel Grain Master Jar
Out of Stock

True Morel Grain Master Jar

$69.00

We have temporarily discontinued our Plug Spawn and Grain Spawn to focus on our immune support products. Learn more here. Latin Name: Morchella esc...

View full details
$69.00
Out of Stock
Reishi Grain Master Jar
Out of Stock

Reishi Grain Master Jar

$69.00

We have temporarily discontinued our Plug Spawn and Grain Spawn to focus on our immune support products. Learn more here. Latin Name: Ganoderma luc...

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$69.00
Out of Stock
Phoenix Oyster Grain Master Bag
Out of Stock

Phoenix Oyster Grain Master Bag

$69.00

We have temporarily discontinued our Plug Spawn and Grain Spawn to focus on our immune support products. Learn more here.Latin Name: Pleurotus pulm...

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$69.00
Out of Stock
Black Morel Grain Master Jar
Out of Stock

Black Morel Grain Master Jar

$69.00

We have temporarily discontinued our Plug Spawn and Grain Spawn to focus on our immune support products. Learn more here. Latin Name: Morchella ang...

View full details
$69.00
Out of Stock
Phoenix Oyster Grain Master Jar
Out of Stock

Phoenix Oyster Grain Master Jar

$69.00

We have temporarily discontinued our Plug Spawn and Grain Spawn to focus on our immune support products. Learn more here.Latin Name: Pleurotus pulm...

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$69.00
Out of Stock
Maitake Grain Master Jar
Out of Stock

Maitake Grain Master Jar

$69.00

We have temporarily discontinued our Plug Spawn and Grain Spawn to focus on our immune support products. Learn more here. Latin Name: Grifola frond...

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$69.00
Out of Stock