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Raw Ingredients




Dehydrated Horse Manure

Dehydrated Horse Manure

Our horse manure is the best there is for mushroom cultivation. All of our manure originates from purebred show horses that are fed Grade-A organic...

$7.00

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Organic Rye Berries

Organic Rye Berries

Organic Rye Berries. 100% USDA certified organic non-GMO grains. Rye berries are regarded as the highest quality grain to make mushroom spawn out of....

$6.00  $5.25

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Brown Rice Flour

Brown Rice Flour

All natural, whole grain brown rice flour. Our all natural BRF is 100% stone ground on a very fine setting. Brown rice flour is the main ingredient...

$4.95

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Vermiculite [Coarse Grade]

Vermiculite
[Coarse Grade]

Coarse (large) sized vermiculite. Coarse vermiculite is typically used as an ingredient in mushroom substrates for the purpose of retaining moisture....

$2.25

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Vermiculite [Fine Grade]

Vermiculite
[Fine Grade]

Fine (small) sized vermiculite. Fine vermiculite is commonly used as an ingredient in mushroom substrate cakes, such as PF-tek style cakes. The PF...

$2.00

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Perlite

Perlite

Natural perlite. Our perlite is large sized (coarse grade) and is free of any additives or chemicals. Perlite is most frequently used to keep...

$2.00

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Organic Coconut Coir Brick

Organic Coconut Coir Brick

A brick of organic coco coir weighs approximately 650 grams and makes approximately 10 quarts after being hydrated. This is an eco-friendly product...

$3.99

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Granular Gypsum

Granular Gypsum

Horticultural grade granular (quick-release) gypsum. Gypsum is commonly used as an ingredient in mushroom substrates and casing mixtures. The primary...

$4.25

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Fresh Cut Wheat Straw

Fresh Cut Wheat Straw

Fresh cut wheat straw. Our wheat straw comes pre-shredded into pieces averaging between 2" and 4" in length. This straw is meant to be pasteurized...

$2.25

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Birch Wood Dowel Pins

Birch Wood Dowel Pins

These fluted wood dowel pins are made of birch wood and measure 8mm x 25mm (5/16" X 1"). Perfect for making plug spawn for wood-loving species. To...

$3.00

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Sealing Wax for Plug Spawn

Sealing Wax for Plug Spawn

100% natural soy wax flakes for sealing plug spawn inoculation sites. GMO-free. Melting temperature of 145F. Our wax flakes melt easily in a double...

$4.95

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Organic Peat Moss

Organic Peat Moss

Pre-sifted organic peat moss. Shroom Supply peat moss comes pre-sifted of large sticks and clumps. Peat is commonly used as an ingredient in mushroom...

$2.00

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Hydrated Lime

Hydrated Lime

Horticultural grade hydrated lime is frequently used as an ingredient in mushroom substrate casing material. It is primarily used to raise the pH of...

$2.00

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Oyster Shell Flour

Oyster Shell Flour

Oyster shell flour is an excellent source of calcium carbonate and is often used in casing mixtures to adjust pH levels. It breaks down slowly over...

$2.00

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Wheat Bran

Wheat Bran

Dry wheat bran. Wheat bran is commonly used as an ingredient in substrates of wood-loving mushroom species. Sold in ½ gallon increments.

$2.00

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Chicken Manure

Chicken Manure

Dehydrated "Grade-A" poultry manure. Chicken manure is sometimes used as a nitrogen supplement in bulk substrates, especially when spawning to coir....

$4.75

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Wild Bird Seed

Wild Bird Seed

Premium wild bird seed. Our wild bird seed (WBS) does not contain cracked corn and comes completely dry. Wild bird seed is often used as a mushroom...

$2.50

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Rye Grass Seed

Rye Grass Seed

Seasonal rye grass seed. Rye grass seed is often used as a grain spawn for sclerotia producing strains. Many prefer it for sclerotia production over...

$5.00

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