Sno-Valley Mushrooms is King County's source for farm-fresh gourmet cultivated mushrooms. "We grow 'lignivorous' (wood eating) mushrooms--ones that be found naturally growing on trees, logs, stumps, or woody debris. We cultivate our fungi on a red alder (alnus rubra) and cottonwood (populus trichocarpa) sawdust substrate that is supplemented with organic grains and hydrated with water from the creek adjacent to our farm. We use no manure, pesticides, fertilizers, or synthetic chemicals. What's more, we source all of our sawdust from sawmills right here in Western Washington."