7 Reasons Your Christmas Cactus Won’t Bloom (And How to Fix Them)

A moldy fruitcake leftover? That’s hardly the peak of holiday disappointment. The true Christmas anticlimax is when your Schlumbergera refuses to Schlumbergera. It’s not for lack of trying, though.

It’s for lack of darkness, proper temperature, and perhaps too little (tough) love. If a stern talking-to, then begging on your knees hasn’t worked, welcome to the club! And try these tips instead.

Huge christmas cactus with flower buds inside.

The Christmas Cactus follows a much stricter instruction manual than simply waiting for cold air. It relies instead on short day lengths. Light, however, is a saboteur.

If your plant is exposed to it after sunset, even the faintest glow from a street lamp or the lamp you read by, it will remain on summer vacation. Lucky cacti…

Anyway, give your little princess between 13 and 16 hours of beauty sleep. Every. Single. Day. Keep this up for about six to eight weeks in fall. Find a place for it in a 100% dark closet or a seldom-used room. Or cover it with a box you swiped from your cat. Just know you do that at your own risk.

Want to know when to start the darkness treatment and all the other bloom-time rituals? Follow the Christmas Cactus Care Calendar: The Routine for On-Time Blooms to stay perfectly in sync with its moody schedule.

Christmas cactus curling

Your tropical friend thinks it is a succulent, meaning overwatering is a fast track to root rot and a plant simply too stressed to show on a date. But do not go completely negligent either.

Letting the soil turn into a complete desert for too long is also strictly forbidden and often causes it to yeet its precious buds.

Trust the fingertip test. Check for total dryness. Then water only when the top inch of soil feels utterly bone dry. Then, keep it merely but evenly moist during the fall bud-setting season. A surprise soaking is also just plain rude.

Also, a touch of humidity, not desert air, keeps them much happier (and far less dramatic).

If you’re still unsure whether you’re loving it too much or not enough, this guide on how to properly water a Christmas cactus and avoid root rot spells out exactly what “evenly moist” really means.

 

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