What is the best soil mixture for orchids?

The best soil mixture for orchids is one that is light and porous. You can either purchase a special mix for orchids, or use coconut bark, sphagnum moss or perlite. Whatever mix you use, make sure the pot you choose has drainage holes in the bottom, and water the orchid only when the potting mix is dry to the touch and your orchid’s roots are silvery white.