Incredible Mushroom Compost For Vegetable Garden References. Mushroom compost is excellent on the vegetable garden, as vegetable crops usually grow best when th soil is not acid and where the soil is alkaline brassicas ( cabbage, broccoli, cauliflower,. For flower beds and vegetable gardens, evenly spread one to three inches of mushroom compost over the surface and till it into the top six inches of soil.

It provides all the vitamins and minerals your tomatoes need. How are mushrooms grown the compost is made in large piles on concrete pads and when done, is loaded into dark buildings and mushroom spawn is. Some of the options that serve as expanding mediums for mushrooms include straw, wood chips, sawdust, wooden trays, cardboard, corncobs, or even composted manure.