DRMyc MGP Pure - Gourmet Mushroom Growth Promoter - Mushroom fertilizer yield enhancer cycle time reducerHandmade MGP stands for Mushroom Growth Promotion and DRmyc's PureMGP is the world's first blend of micro organisms exclusively targeted towards that purpose. This formula encourages drastic yield enhancement and is suitable for use by amateur mycologists, hobbyist mushroom growers, and mushroom farmers alike. With DRmyc's PureMGP blend, you can reliably expect an increase of between 30 70% in yields, while decreasing the time to fruit substantially.