Mushroom Grain Spawn

Start your cultivation with vigorous, fully colonized grain spawn prepared fresh to order under strict sterile laboratory conditions. Each bag is produced using premium corn grain and carefully selected commercial fruiting genetics, then allowed to fully colonize before undergoing quality inspection to ensure clean, reliable, and consistent performance.

Because every grain spawn bag is prepared specifically for your order, please allow approximately 2–3 weeks for preparation, colonization, quality inspection, and packaging before shipment. This ensures you receive fresh, actively growing spawn rather than aged inventory.

Ideal for inoculating pasteurized or sterilized bulk substrates, including hardwood sawdust, straw, and other suitable cultivation substrates, our grain spawn is trusted by hobby growers, educators, researchers, and commercial mushroom cultivators seeking dependable results.

Prepared Fresh to Order • Fully Colonized • Sterile Laboratory Conditions • 2–3 Week Lead Time

16 products
  • A cluster of lion mane mushrooms next to a clear plastic bag containing a substrate mix, with a wooden brand tag reading AggieTropicals, on a white background.
    100.00 SR
    100.00 SR
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  • A cluster of brown oyster mushrooms growing on a black substrate plate next to a clear plastic bag containing grain spawn, with a wooden AggieTropicals brand tag in front on a white background.
    100.00 SR
    100.00 SR
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  • A cluster of mature king oyster mushrooms with brown caps and off-white stems stands on a black slate base next to a clear plastic bag containing grain spawn, with a wooden AggieTropicals brand tag in front, isolated on a white background.
    100.00 SR
    100.00 SR
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  • A cluster of mature brown oyster mushrooms next to a clear plastic bag containing grain spawn, with a wooden brand tag reading AggieTropicals in front, on a plain white background.
    100.00 SR
    100.00 SR
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  • A cluster of mature King Blue Oyster mushrooms next to a clear plastic bag containing the spawn substrate, with a wooden brand tag reading AggieTropicals on a white background.
    100.00 SR
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  • A pink oyster mushroom culture kit showing a large pinkish-orange mushroom cluster on a black base, a clear bag containing white spawn powder and substrate, and a wooden AggieTropicals brand tag, all on a plain white background.
    100.00 SR
    100.00 SR
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  • Golden Oyster Sterilized Spawn Culture Bag
    100.00 SR
    100.00 SR
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  • A cluster of mature shiitake mushrooms next to a clear plastic bag containing a white mycelium spawn pack, with a wooden brand tag reading 'AggieTropicals SHIITAKE PREMIUM SPAWN GENETICS' on a white background.
    100.00 SR
    100.00 SR
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  • A cluster of mature brownish-gray mushrooms next to a clear plastic bag filled with a white powder and grain substrate, with an AggieTropicals tag in front on a white background.
    100.00 SR
    100.00 SR
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  • Chicken of the woods sterilized grain spawn bag
    100.00 SR
    100.00 SR
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  • A cluster of mature chestnut mushrooms next to a clear plastic bag filled with brown substrate and white powder, with a wooden AggieTropicals brand tag in front on a white background.
    100.00 SR
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  • A cluster of brown Reishi mushrooms on a black display base next to a clear plastic bag containing a white mycelial spawn pack, with a wooden AggieTropicals brand tag in front, all on a white background.
    100.00 SR
    100.00 SR
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  • Turkey Tail mushroom spore print and substrate bag set by AggieTropicals, featuring a realistic brown and tan mushroom conk on a black stand next to a clear plastic bag containing grain and white mold, with a wooden brand tag in front.
    100.00 SR
    100.00 SR
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  • A cluster of mature King Stropharia mushrooms on a black base next to a clear plastic bag containing substrate, with a wooden AggieTropicals brand tag in front, all on a white background.
    100.00 SR
    100.00 SR
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  • A cluster of beige lion's mane mushrooms next to a clear plastic bag containing a white spore print over brown substrate, with a wooden Aggie's Tropicals brand tag in front on a white background.
    100.00 SR
    100.00 SR
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  • Enoki mushroom sterilized grain spawn bag
    100.00 SR
    100.00 SR
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