Purchase a new pot for your orchid if it has rotting roots or its roots are healthy and filling up the current one. Choose a planter slightly larger than the current one for healthy roots and a slightly smaller planter for rotting roots.
Water the orchid before repotting it to loosen its roots.
Remove the orchid from its planter carefully, freeing stuck roots with a small gardening knife.
Cut off dead or dying roots carefully with the knife.
Place large pieces of broken clay pot, mosaic pieces or stones in the bottom of the new planter.
Center the orchid in the middle of the planter. Slowly pour your chosen stones around the plant. Even out the stones so they sit relatively level around the plant.
Place a stake in the planter, and carefully tie the orchid stalk to it with twine or tiny cotton strips.