Mushroom Spawn, Grow Kits, & Supplies | Johnny's Selected Seeds

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We offer three options for growing mushrooms: ‘Spray & Grow’ kits for the home gardener, sawdust spawn for production in garden beds, logs, and containers, and plug spawn for production in logs. Choose from a variety of strains, all certified organic and satisfaction guaranteed.

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29 Products

Shiitake Plug Spawn – 100 Count Plug Spawn

Shiitake Plug Spawn – 100 Count

Organic Mushrooms

Nutritious and medicinal.

Out Of Stock

Blue Oyster Plug Spawn – 100 Count Plug Spawn

Blue Oyster Plug Spawn – 100 Count

Organic Mushrooms

Vigorous and reliable.

Out Of Stock

Italian Oyster Plug Spawn – 100 Count Plug Spawn

Italian Oyster Plug Spawn – 100 Count

Organic Mushrooms

Finest culinary oyster.

Out Of Stock

Wine Cap Sawdust Spawn Sawdust Spawn

Wine Cap Sawdust Spawn

Organic Mushrooms

A garden bed favorite.

Out Of Stock

Shiitake Plug Spawn – 500 Count Plug Spawn

Shiitake Plug Spawn – 500 Count

Organic Mushrooms

Nutritious and medicinal.

Out Of Stock

Shiitake Sawdust Spawn Sawdust Spawn

Shiitake Sawdust Spawn

Organic Mushrooms

Nutritious and medicinal.

Out Of Stock

Lion's Mane Plug Spawn – 100 Count Plug Spawn

Lion's Mane Plug Spawn – 100 Count

Organic Mushrooms

Unique and versatile.

Out Of Stock

Almond Agaricus Sawdust Spawn Sawdust Spawn

Almond Agaricus Sawdust Spawn

Organic Mushrooms

A compost lover.

Out Of Stock

Lion's Mane Sawdust Spawn Sawdust Spawn

Lion's Mane Sawdust Spawn

Organic Mushrooms

Unique and versatile.

Out Of Stock

Blue Oyster Sawdust Spawn Sawdust Spawn

Blue Oyster Sawdust Spawn

Organic Mushrooms

Vigorous and reliable.

Out Of Stock

Golden Oyster Plug Spawn – 100 Count Plug Spawn

Golden Oyster Plug Spawn – 100 Count

Organic Mushrooms

A culinary gem.

Out Of Stock

Golden Oyster Sawdust Spawn Sawdust Spawn

Golden Oyster Sawdust Spawn

Organic Mushrooms

A culinary gem.

Out Of Stock

Golden Oyster Plug Spawn – 500 Count Plug Spawn

Golden Oyster Plug Spawn – 500 Count

Organic Mushrooms

A culinary gem.

Out Of Stock

Italian Oyster Sawdust Spawn Sawdust Spawn

Italian Oyster Sawdust Spawn

Organic Mushrooms

Finest culinary oyster.

Out Of Stock

Lion's Mane Plug Spawn – 500 Count Plug Spawn

Lion's Mane Plug Spawn – 500 Count

Organic Mushrooms

Unique and versatile.

Out Of Stock

Italian Oyster Plug Spawn – 500 Count Plug Spawn

Italian Oyster Plug Spawn – 500 Count

Organic Mushrooms

Finest culinary oyster.

Out Of Stock

Blue Oyster Plug Spawn – 500 Count Plug Spawn

Blue Oyster Plug Spawn – 500 Count

Organic Mushrooms

Vigorous and reliable.

Out Of Stock