These easy-to-use, high-quality mushroom grow blocks are great for beginners or those who already enjoy growing their own mushrooms at home. You will receive a healthy, ready to use, fully colonized mushroom block. To ensure you receive a kit that produces a fresh, healthy harvest, our grow kits are sometimes made to order. Please allow time for full colonization before shipping, this can be up to 3 weeks but generally we have rotating stock ready to ship.