The term references a readily available soil amendment, a byproduct of commercial mushroom farming operations. It is the material remaining after mushrooms have been harvested from growing beds or trays. Individuals seeking this resource often use location-based search terms to find local suppliers.
This composted material offers several benefits to gardeners and landscapers. It is a nutrient-rich source of organic matter, improving soil structure, water retention, and drainage. Historically, its use has been a cost-effective and environmentally sound way to repurpose agricultural waste, contributing to sustainable gardening practices. The availability of such material locally reduces transportation costs and supports regional businesses.