After blooming, Christmas cacti need somewhat of a dormant period. During this time, keep your Christmas cactus in medium light, allow the soil to dry out a little more than usual between waterings, and do not fertilize for one month. This allows the cactus to recuperate after flowering.
After January, a regular watering and fertilizing schedule may be resumed. The Christmas cactus does not have many pest problems. The biggest problem derives from overwatering, which can cause wilting. Root rot sets in when the soil is kept too moist for too long periods. The only way to save your cactus is by propagating any healthy leaves. This plant propagates very easily by pushing a healthy leaf into fresh potting soil.
Keep your Christmas cactus in a shady location outdoors during the spring and summer, and bring indoors in October just before the first frost.
Once you master these simple steps and set a routine, your Christmas cactus will reward you and your family with profuse blooms for years to come.
Additional Christmas Cacti Resources From Fairview