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Black Poplar Mushroom (Agrocybe aegerita) Live Spawn
$21.95
2 Sterilized Rye Bags with Injection Port & 1 Bag of 5lb Manure Substrate
$25.95

Bulk Substrate

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Five sealed rectangular blocks of 50/50 horse manure and straw mushroom substrate, each weighing five pounds. The blocks are tightly packed in clear plastic, showing a dark mixture of organic material with visible straw strands throughout.
50/50 Horse Manure and Straw Bulk Substrate (25 lbs)
$130.50
All In One Mushroom Grow Bags 8-Pack
All In One Mushroom Grow Bags 8-Pack
$140.00
Twelve half-pint jars filled with a sterilized mix of brown rice flour and vermiculite substrate, arranged in a grid. The jars feature self-healing injection ports on the lids, ideal for easy inoculation and efficient mushroom cultivation.
BRF Bulk Substrate Jars (12-Pack)
$63.00
Five sealed rectangular blocks of manure-based mushroom substrate, each weighing five pounds. The blocks are tightly wrapped in clear plastic, showing a dark, finely textured organic material. Ideal for bulk mushroom cultivation.
Manure Based Bulk Substrate (25 lbs)
$130.50
Twelve quart-sized jars filled with a sterilized mix of grains, including rye, milo, and popcorn. The jars are arranged in a grid and feature self-healing injection ports on the lids, designed for easy inoculation and optimal mushroom cultivation.
Mega Mix Bulk Substrate Jars (12-Pack)
$116.25
Five sealed mushroom grow bags filled with fully hydrated and sterilized popcorn grains, each weighing five pounds. The bags are tightly wrapped in clear plastic and feature self-healing injection ports, perfect for inoculation and bulk mushroom cultivation.
Popcorn Bulk Substrate Grain Bags (25 lbs)
$130.50
Twelve quart-sized jars filled with fully hydrated and sterilized popcorn grains, arranged in a grid. The jars feature self-healing injection ports on the lids, making them ideal for easy inoculation and efficient mushroom cultivation.
Popcorn Bulk Substrate Jars (12-Pack)
$116.25
Twelve quart-sized jars filled with fully hydrated and sterilized red milo grains, arranged in a grid. The jars feature self-healing injection ports on the lids, making them ideal for easy inoculation and efficient mushroom cultivation.
Red Milo Bulk Substrate Jars (12-Pack)
$116.25
Five sealed mushroom grow bags filled with fully hydrated and sterilized rye berries, each weighing five pounds. The bags are tightly wrapped in clear plastic and feature a self-healing injection port, ideal for inoculation and bulk mushroom cultivation.
Rye Berry Bulk Substrate Grain Bags (25 lbs)
$130.50
Twenty-five sealed mushroom grow bags, each filled with one pound of fully hydrated and sterilized rye berries. The bags are neatly arranged in a grid, wrapped in clear plastic with visible filter patches, perfect for large-scale mushroom cultivation.
Rye Berry Bulk Substrate Grain Bags (25-Pack)
$147.50
Twelve quart-sized jars filled with fully hydrated and sterilized rye berries, arranged in a grid. The jars feature self-healing injection ports on the lids, making them ideal for mushroom cultivation and inoculation in bulk.
Rye Berry Bulk Substrate Jars (12-Pack)
$116.25
Twelve quart-sized jars filled with fully hydrated and sterilized white millet grains, arranged in a grid. The jars feature self-healing injection ports on the lids, making them ideal for easy inoculation and efficient mushroom cultivation.
White Millet Bulk Substrate Jars (12-Pack)
$116.25
Twelve quart-sized jars filled with fully hydrated and sterilized white milo grains, arranged in a grid. The jars feature self-healing injection ports on the lids, making them ideal for easy inoculation and efficient mushroom cultivation.
White Milo Bulk Substrate Jars (12-Pack)
$116.25
Five sealed mushroom grow bags filled with wood-based mushroom substrate, each weighing five pounds. The bags are tightly wrapped in clear plastic, displaying the finely textured wood fibers used for growing wood-loving mushrooms. Ideal for bulk cultivation.
Wood Based Bulk Substrate (25 lbs)
$130.50

For serious mushroom growers and commercial cultivators, our Bulk Substrate Collection offers the best value for your cultivation needs. Purchase high-quality substrates in bulk quantities at discounted prices compared to individual units. Whether you’re growing gourmet, medicinal, or specialty mushrooms, our bulk substrates are carefully prepared, fully hydrated, and sterilized, ensuring they’re ready for inoculation upon arrival.