Certified Organic: Pleutotus oysteratus Mushroom Spawn Used as Seed for These Kits Certified Organic by Quality Assurance International (QAI). Mushroom logs produced through methods that integrate cultural, biological, and mechanical practices that foster cycling of resources, promote ecological balance, and conserve biodiversity. All Components of our Mushroom Growing Kits are Recyclable as are all materials used to pack & ship the kits. The Mushroom Kit allows you to grow some of the mushrooms used by the finest chefs in the world easily and quickly almost anywhere in your own home or office. The Mushroom Kit takes only a 9" by 9" space for growing mushrooms, requires no more care nor knowledge than a common tropical plant and comes with complete instructions and materials to maintain the correct environmental conditions around your log. Mushroom Logs may be used for growing mushrooms on a coffee table, counter, or desk - they will produce mushrooms virtually anywhere room temperat