Mushroom Substrate Ingredients

Below you can find individual mushroom substrate ingredients sold by the bag or pound. These are raw materials for growers who prefer to mix their own substrates, formulate custom blends, or supplement existing recipes.

Growing Media

We carry coconut coir, peat moss, horticultural vermiculite, perlite, hardwood pellets, and wheat straw in standard quantities.

Grains and Seeds

Yellow popcorn, white millet, and rye grass seed are available for growers who prepare their own inoculation media from scratch.

Additives and Supplements

Agricultural gypsum, oyster shell flour, rice hulls, expanded clay pebbles, and bee pollen granules are available for adjusting substrate structure, moisture retention, and nutrition.