Growing Substrates



Product Image Item Name- Price
Crushed Oyster Shell Flour - 3lbs

Crushed Oyster Shell Flour - 3lbs

Crushed Oyster Shell Flour. A natural source of calcium carbonate. Used to raise the pH from acidic to base. Primarily used in casings to help...
$4.95  $3.95
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Diatomaceous Earth - Horticultural Grade - 1lb

Diatomaceous Earth - Horticultural Grade - 1lb

Diatomaceous Earth - Horticultural Grade - 1lb Used as a non-toxic insecticide, due to its physico-sorptive properties. The fine powder absorbs...
$1.99  $1.79
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Gypsum - Calcium Sulfate Pharmaceutical Grade Food Grade - 1 lb

Gypsum - Calcium Sulfate Pharmaceutical Grade Food Grade - 1 lb

Very high quality Gypsum, also known as Calcium Sulfate, or CaSO4. pharmaceutical grade and food grade powder. Highly used in the mushroom industry...
$4.95  $2.45
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Horticultural Perlite - 8 Dry Quarts : 2 Gallons

Horticultural Perlite - 8 Dry Quarts : 2 Gallons

White perlite granules are the result of the expansion of combined water vaporizing in the crude mineral and forming enclosed air pockets. Because of...
$7.95  $6.95
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Horticultural Vermiculite - 8 Dry Quarts : 2 Gallons

Horticultural Vermiculite - 8 Dry Quarts : 2 Gallons

When processed in special furnaces, the mineral ex-foliates (or expands) in the the accordion-like layered particles familiar to many as a part of...
$7.95  $6.95
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