Mushroom Growing Kit (indoor) - Lion's ManeOur mushroom grow kits are made to order in small batches right here in Winnipeg. Each block weighs approximately 5 lbs, and depending on the species or strain of mushroom being grown, has the capacity to produce several crops that will yield 1. 5 to 2. 5 pounds of mushrooms over the course of 1 2 months. Grow kits are an excellent introduction into mushroom cultivation for those that never tried it out before, and it is certainly the easiest ways to