Portobello...What is the Substrate?

RushWayne rushwayne at aol.com
Wed Mar 26 17:37:03 EST 1997

Portobello mushrooms are grown on compost made from
straw and manure, like white button mushrooms.  The
procedures for making the compost are covered in
Stamets and Chilton, The Mushroom Cultivator.

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