This horse manure has been aged, is dry and has been processed through a rototiller and sifted through a screen to ensure it is of high quality for growing edible or medicinal mushrooms.

This can be added to vermiculite, coco coir, shredded straw, or other mushroom bulk substrates to improve performance, provide various support and nutrients, and help you reach the desired water content and density of your substrate for a bulk grow.


V3-3.5 Vermiculite. Therm-O-Rock Brand.


This is a one gallon ziplock bag full of coarse grade vermiculite. Great for mixing with compost, coco coir, horse manure or other bulk substrate material for growing mushrooms.

This is a non nutritious additive that aids in increased moisture content and aeration.