Shell materials

Shell materials, such as rice husks, peanut shells, walnut shells (crushed), bamboo shoot sheaths, etc. Bamboo shoot sheaths should be boiled, sun-dried, chopped up, and composted before use. Rice husks, peanut shells, and walnut shells should also all be properly composted before use. Shell materials, mixed with sugar materials or sand materials, can be used forcultivationof all kinds of orchids.