by Tina Sottolano Cain
Zygocactus or Holiday Cactus is member of a small genus group of cacti called Schlumbergera that includes Christmas, Thanksgiving and Easter cactus. They are a popular houseplant and very easy to care for. Cultivars are usually white, pink, orange, red, purple and even yellow. Easter or the Whitsun cactus are most commonly a scarlet red color.
If you are wondering why your cactus doesn’t bloom exactly during the Christmas holiday it may be one of two factors: timing; or you may have a variety specific to Thanksgiving.
The difference between the two plants is in the texture of the leaves. Typically the Christmas cactus has smooth edges. The Thanksgiving cactus has a more jagged leaf edge, thus giving it the name crab cactus because of its claw like texture. When shopping for either check the varieties. The Christmas cactus is usually labeled Schlumbergera x buckleyi.
Caring for this plant is simple. Despite being called a cactus they are native to Brazil and the South American rainforest so they require more water and humidity than a traditional cactus.
Give your cactus bright to medium indirect light indoors and water regularly. I recommend you check the soil and water when the soil feels dry. Fertilize monthly 20-10-20 water soluble at 1/2 the rate. I like to keep a calendar with a watering and fertilizer schedule. This allows you to see how often you are watering and can potentially prevent you from over or under watering. A few signs to look for are the leaves turning yellow or looking shriveled and dropping off.
In mid-spring place the cactus outside in a shaded location. It will love being outdoors when the air is warm and humid throughout the summer. Repot if necessary. Christmas cactus do not mind being pot bound, however if your plant has been in the original pot for a few years its time to repot and replenish with fresh potting soil.
Leave plant outside in summer until temps go down to 50 degrees. A cooling period signals the plant to begin a new growth cycle of setting buds to flower. At about six to eight weeks before Christmas, place the plant in a completely dark space where the temperature is 60 degrees (such as a closet or garage) for 12 hours each night. Be sure to bring the plant out to a sunny spot for the other 12 hours each day. And remember to keep plant away from drafty windows or you may loose those flower buds you worked so hard to get.
These simple steps will insure you have your Christmas cactus blooming at Christmas time