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Out Grow

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.

Out Grow

White Milo Bulk Substrate Jars (12-Pack)

4.5 (1,234)

Sold 100+ last 30 days

20% off first order

$123.33

Color

Black

Quantity

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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.

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White Millet Bulk Substrate Jars (12-Pack)

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Sterilized Mega Mix Grain Spawn Bag – 3lb

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.

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Pink Oyster mushroom grain spawn in a one quart jar, white mycelium covering colonized rye grain

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Pink Oyster Mushroom Spawn, 1 Quart Jar

Beech mushroom grain spawn in a one quart jar, dense colonized grain on a stainless steel bench

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one ten pound bags of pasteurized CVG substrate on a white background

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Sterilized Red Milo Quart Jar

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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.

Out Grow

BRF Bulk Substrate Jars (12-Pack)

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Out Grow

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5grain spawn bags on table showing the different sterilized grains in a 10T unicorn bag.

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Midwest's Select Bulk Substrate 5 lb bag of pasteurized CVG mushroom substrate

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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.

Out Grow

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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.

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Popcorn Bulk Substrate Jars (12-Pack)

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.

Out Grow

Wood Based Bulk Substrate (25 lbs)

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.

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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.

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Out Grow

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Out Grow

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Out Grow

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