This list is designed to provide helpful guidance to producers by indicating the most commonly used supplements and substrates, and how they fare within the CNG Standards for Mushroom Production.
This is not a comprehensive list! Nor is it the full CNG Mushroom Standards for substrate or supplements.
If you’re not sure whether a substrate or supplement you’re interested in using would be allowed under CNG standards, please contact the CNG office at 845 687 2058 or firstname.lastname@example.org.
Typically GMO: most likely prohibited unless certified organic
Corn distiller’s grain
The items above are prohibited unless certified organic or sourced directly from a farmer who will sign a Substrate Declaration.
Straw (wheat, oats, rye)
Peanut meal, peanut shells
Grains (rye, wheat, millet, barley)
Spent grains from beer fermentation (barley and wheat)
Sawdust from non-treated wood
Pelletized sawdust, hardwood fuel pellets
Agricultural waste from a certified organic or Certified Naturally Grown operation
All substrates used in CNG operations must be from non-GMO sources and grown free of heavy metals.
Might be fine, but be cautious!
Rice bran, rice hulls