Colonized Grain Spawn

Start your cultivation with vigorous, fully colonized grain spawn produced fresh to order under strict sterile laboratory conditions. Each bag is carefully prepared using premium grains and healthy mushroom cultures, 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 3 weeks for preparation and full colonization. This ensures you receive fresh, actively growing spawn—not old inventory.

Ideal for inoculating bulk substrates such as hardwood sawdust, straw, or supplemented mixes, our grain spawn is suitable for hobby growers, educators, and commercial cultivators seeking dependable results.

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

18 products
  • 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
    Sold out
  • Chicken of the woods sterilized grain spawn bag
    100.00 SR
    100.00 SR
    Sold out
  • A pale beige ram's horn coral displayed representing tremella next to a clear plastic bag containing brown substrate and a white fungal mat, with an AggieTropicals brand tag in front on a white background.
    100.00 SR
    100.00 SR
    Sold out
  • 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
    100.00 SR
    Sold out
  • 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
    Sold out
  • 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
    Sold out
  • 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
    Sold out
  • 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
    Sold out
  • Enoki mushroom sterilized grain spawn bag
    100.00 SR
    100.00 SR
    Sold out