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    Organic Black King Mushroom Fruiting Block

    Organic Black King Mushroom Fruiting Block

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    Organic Grey Oyster Mushroom Fruiting Block

    Organic Grey Oyster Mushroom Fruiting Block

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    Organic Lion's Mane Mushroom Fruiting Block

    Organic Lion's Mane Mushroom Fruiting Block

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  • Featured

    • BoomRoom II
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  • Featured

    • Lion's Mane
    • Pink Oyster
    • Blue Oyster
    • King Oyster
    • Black King
    • Reishi
    • All Fruiting Blocks
    Organic Black King Mushroom Fruiting Block

    Organic Black King Mushroom Fruiting Block

    No reviews
    Organic Grey Oyster Mushroom Fruiting Block

    Organic Grey Oyster Mushroom Fruiting Block

    No reviews
    Organic Lion's Mane Mushroom Fruiting Block

    Organic Lion's Mane Mushroom Fruiting Block

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  • Featured

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How to Choose Your Species

Choose your mushroom species based on your goals and experience—easy, fast-growing varieties like oysters are perfect for beginners, while unique gourmet or medicinal options like Lion’s Mane, Chestnut, or Reishi offer rewarding results for more patient or advanced growers.

A cluster of fresh oyster mushrooms with broad, overlapping caps and pale stems on a white background.

Blue Oyster

Beginner-friendly and fast-growing with dependable yields, making it perfect for first-time indoor growers.

A cluster of white, fluffy lion’s mane mushrooms with a shaggy, hairy texture, set against a plain white background.

Lion’s Mane

A great choice for growers wanting a gourmet seafood-style mushroom with crab-like flavor and texture.

Two brown shiitake mushrooms, one showing the cap and the other displaying the underside with gills, on a white background.

Shiitake

A classic wood-loving mushroom ideal if you’re looking for a well-established gourmet variety with rich, savory flavor.

Three king oyster mushrooms with thick white stems and broad, light brown caps, grouped together against a white background.

King Trumpet

A meaty, robust mushroom with thick stems ideal for growers looking for “steak-like” mushrooms at home.

A pile of fresh shiitake mushrooms with light brown caps and visible gills, arranged on a white background.

Black King

An advanced species that fruits from the top of the block and offers experimental appeal for growers wanting something unique.

A cluster of brown-capped mushrooms with long, light-colored stems on a white background.

Pioppino

A gourmet woodland mushroom with top-fruiting preference, suited for growers ready for a slightly more advanced species.

A cluster of pink oyster mushrooms with fan-shaped caps and delicate gills, isolated on a white background.

Pink Oyster

A visually striking oyster mushroom with warm-climate tolerance and bold color that adds flair and flavor to your grow.

A cluster of bright yellow mushrooms with smooth, flat caps and short stems, arranged closely together against a white background.

Golden Oyster

A vibrant tropical oyster with bright yellow caps and a mild nutty taste, great if you want something decorative and edible.

Three light gray oyster mushrooms with broad, fan-shaped caps and visible gills are shown closely grouped together against a white background.

Italian Oyster

A hearty oyster mushroom variety with large caps and a mellow flavor, good for steady production and larger flushes.

A cluster of brown mushrooms with white spots on their caps, growing closely together against a white background.

Chestnut

A nutty-flavored, firm-textured mushroom that suits cooler conditions and a more patient grow cycle.

A cluster of small, brown-capped mushrooms with short stems, closely packed together against a white background.

Nameko

A Japanese variety with an aromatic, slightly sweet flavor and mashed-potato texture, ideal for those wanting something distinctive.

Cluster of four orange-brown mushrooms with smooth, rounded caps and thick stems, isolated on a white background.

Golden Enoki

A delicate, golden-stemmed mushroom that thrives in cooler, high-humidity conditions and adds elegance to soups or stir-fries.

Three reddish-brown, fan-shaped reishi mushrooms with ridged surfaces and white-speckled stems on a white background.

Reishi

A low-maintenance medicinal mushroom that fruits entirely within the bag and is perfect if you want something near-set-and-forget.

A cluster of white oyster mushrooms stacked closely together on a plain white background.

Snow Oyster

A cool-tolerant oyster variety with lighter coloration, nice for growers seeking temperature-flexibility and a clean look.

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921 Riverside Street
Portland, Maine 04103
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Image of the North Spore logo placed under a cluster of light beige oyster mushrooms with fan-shaped caps and visible gills. A cluster of light beige oyster mushrooms with fan-shaped caps and visible gills, overlaid on the North Spore logo.
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