Fresh mix allows good air circulation around the roots, essential to plant health.
Repotting may be done at any time of the year, but springtime right after floweing is best. Since different materials dry differently, all plants in a collection should be potted in the same type of mix to simplify watering. Slip the plant out of the pot and carefully remove all old mix and dead roots, taking care to disturb live roots as little as possible. This is important, because paphs do not readily regrow roots on old growths. Do not be eager to divide the plant, since large specimens produce more flowers.