Pasteurized Straw Mushroom Substrate Bag - 5lb pasteurized Packaged in a durable mushroom

Packaged in a durable mushroom grow bag with a 5-micron filter patch for optimal gas exchange

Grain spawn — rye or multi-grain

this substrate provides the structure and nutrients needed for successful mushroom cultivation

The Rye Grain Bag - 5lb provides a reliable and effective growing medium that supports vigorous mycelial growth

Enriched with gypsum to maintain balanced pH

Pasteurized Straw Mushroom Substrate Bag - 5lb pasteurized Packaged in a durable mushroomPasteurized Straw Mushroom Substrate Bag 5lb The Pasteurized Straw Mushroom Substrate Bag 5lb is an essential substrate for cultivating a variety of mushroom species. This fully hydrated and pasteurized straw substrate offers a natural and effective growing medium that promotes vigorous mycelial growth and multiple mushroom flushes. Packaged in a large mushroom grow bag, it features a 5 micron filter patch to allow optimal gas exchange while