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How To Properly Water A Christmas Cactus and Avoid Root Rot

DO NOT blast your Christmas cactus with a harsh jet fire water hose! Pour water slowly or even sprinkle for better distribution.

  • If you’re growing your Christmas cactus in a pot, let excess water drain away after each watering session and ensure it isn’t pooling around.

Always empty saucers or decorative sleeves after watering! Standing water under the pot is the quickest path to root rot.

Many gardeners (me included) opt for bottom watering for houseplants like Christmas cacti since it essentially allows the roots to absorb moisture from the bottom basin and not get wet near the surface.

Christmas cactus (Schlumbergera) in the pot
  • Spring & Summer: Keep the soil slightly but consistently moist. Let the top inch dry between waterings to prevent sogginess.
  • Fall (Bud Set): Cut down on the number of weekly watering sessions to let blooms come in. Allow soil to dry a little more between sessions.
  • Winter (After Flowering): While your cactus is blooming, keep soil lightly moist. The real rest period starts after the blooms fade. Water only when the top 2 inches of soil are dry.
Huge Christmas cactus in bloom with many flowers.

This is one question that has no definite “right answer” because both methods work well for different gardeners in different conditions.

  • I personally prefer bottom watering because it helps ease any stress related to overwatering or root rot.
  • I still water from the top once a month just to rinse out any minerals or fertilizer salts that build up in the soil.

For bottom watering to work effectively, place your Christmas cactus pot in a shallow tray of water for 15-20 minutes. Then, take it out and let it drain properly.

How Would You Know If You’re Overwatering Your Christmas Cactus?

Overwatered thanksgiving cactus
Overwatered Thanksgiving Cactus

Well, like any other plant that’s stressed and in discomfort, your Christmas cactus will likely begin to show signs pretty quickly.

Yellowing leaves, soft and dark stems, a sharp musty odor, and stunted growth are some pretty clear signs that root rot is setting in from excess moisture and poor drainage.

The soil might start to smell sour or musty, a clear sign of anaerobic, waterlogged conditions.

Let’s Conclude

If your cactus has finished blooming and you’re thinking about giving it a trim, here’s a helpful guide on signs it’s time to prune your christmas cactus.

In my years growing Christmas cacti in different places and ways, I found them to be quite a misunderstood houseplant, especially when it comes to watering.

And remember, it’s always better to slightly underwater a Christmas cactus than to overwater it.

New gardeners aren’t experienced enough to pick up on signs of trouble, and wise gardeners aren’t talking about the basics, such as proper watering. You’re lucky you came across this article in time! Now put your newfound Christmas cactus watering knowledge to use and make me proud!

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