how often should i water a christmas cactus

Water your Christmas cactus every 1-2 weeks during the growing season (spring and summer) and every 2-4 weeks during the dormant season (fall and winter). The amount of water it needs depends on the humidity, temperature, and the size of the pot. Check the soil moisture by inserting your finger or a moisture meter into the top 2 inches of soil. If the soil feels dry, it's time to water. If the soil is damp, wait a few days before watering again.