Place newspaper over a clean workspace to avoid spreading pests or diseases.
Turn the flowerpot upside down. Hit the bottom and the sides with the back of your hand over the newspaper to remove the orchid.
Shake the soil gently from the roots. Remove dead or diseased roots, which will be brown and soft, with a sterilized trimming shear. Trim the healthy roots and remove any dead pseudobulbs.
Place a 1-inch layer of orchid potting soil into a sterile flowerpot. The potting soil should contain fir bark, peat moss and perlite to aid in the aeration and drainage of the orchid. Use a flowerpot designed for orchids with the drainage slits down the sides of the pot.
Place the orchid in the center of the flowerpot making sure the base of the orchid is at the same level it was in the previous flowerpot. Add more potting soil until filled, gently tamping the soil around the roots.
Water the orchid in the sink with cool water until the water drains freely from the drainage holes or slits. Stake the orchid plant with a plant stake and secure it with a clip or twine.