Transplant your orchids after flowering and before the new roots are larger than 1/2 an inch.
Soak your orchid in the original pot until the soil is very damp.
Lay the orchid pot on its side and gently pull the plant out of the pot. Use a knife to loosen the roots from the soil.
Wash off extra bark and soil attached to the roots, and cut off roots that appear dark or rotted.
Add 1/2 an inch of fir bark and perlite to the new pot. Soak the bark well before transplanting your orchid.
Place the orchid in the new pot with the base of the plant 1/2 an inch below the rim. Keep the orchids out of the sun for 6 weeks.