What is Mushroom Compost?
If you don't know what Mushroom compost is, chances are you're thinking it
is decomposed mushrooms. Most of us made this same mistake...once. Then,
we learned what it is really made of, and what a great soil medium it is.
Mushroom compost, also called mushroom soil, is the soil medium commercial
growers use to grow mushrooms. After they have used it, mushroom farmers
have two choices: either toss it out, or.... sell it to you at a much reduced
price. You can easily guess their decision. Gardeners highly value mushroom
compost, as a great soil conditioner or amendment.
Mushroom compost is very specifically formulated. The contents include: wheat
straw, hay, corn cobs, cottonseed hulls, gypsum and chicken manure. These
ingredients are ground up and mixed together. It is then pasteurized by steaming
it. This sterilization process kills bacteria, mold spores, weed seeds,
and insects. The resulting soil is spread out on a bed and topped off with
a layer of spaghnum peat moss, and some ground limestone.
Commercial mushroom growers sow mushroom spores into the sterile soil. The
mushrooms quickly grow in this organic, rich, slow release soil, After
harvesting the mushrooms, the remaining soil is not used again. It is packaged
up and sold to home gardeners as mushroom compost.
Did You Know? Some of the biggest giant pumpkins, capable of growing
to over one ton, are grown with mushroom compost.
Try mushroom compost on your favorite garden plants... you and your plants
will just love it!