Description : can I use vermiculite instead of wood chips when repotting my orchid plant?
Last Answer : orchids rely on a medium which is mostly rocks, pebbles, peat moss, and some vermiculite type aerators. I've personally not heard of using just vemiculite but one hint I learned from an elderly japanese ... houseplants. Can't remember the last time I threw out an egg shell. Good luck and Aloha!