Their spectacular blooming habit makes Christmas cacti extremely popular but, also, because their care is relatively easy. They require a rich well drained soil, bright, indirect light. Feed it with a well balanced houseplant fertilizer between April and October. Christmas cactus is not drought tolerant. Water the plants thoroughly and let them dry out between watering. Do not ignore it, or, kill it with kindness. The leaves will wrinkle if the soil is too dry and when over watered which can lead to root rot. Water the plant less in winter.
Prune the plants in the summer to encourage more branching by pinching off at the joints. When the plants are in bloom it is important not to let the plant dry out or expose them to direct heat as that may cause the flower buds to drop. Too much light can fade the flowers. Fertilize with a high potassium fertilizer when the buds form and continue until the flowers fade.
There are two important factors in encouraging bud formation: 1: The Christmas cactus requires at least 14 hours of darkness. 2: It needs prolonged cool temperatures of 50-55 degrees. Bud formation will not happen if temperatures are above 70 degrees. The plant should bloom within six weeks.
With a little effort and understanding, one can repeat the flowering process year after year.
Janine Phillips, Smith County Master Gardener
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