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Christmas Cactus Outdoors for Summer

I have a question for you about my Christmas cactus. I made the mistake of putting it outdoors and the leaves are now whitening. What should I do?

Thanks much, Caitlin

Caitlin, it could be your Christmas cactus (Schlumbergera) is suffering from leaf scorch. Intense summer sunlight and excessive heat causes the leaves to fade or wilt. Christmas cactus prefer bright, indirect light. Place yours in a spot with high shade or morning sun and afternoon shade.

Now if your plants are in a shady spot that stays relatively cool, you may have a problem with mealy bugs. These pests are common on Christmas cactus and other houseplants. Take a close look at the white substance on your plant’s leaves. Is it fluffy like bits of cotton? Is the white mainly in the joints and crevices? If your answers are yes, then you have mealy bugs. Treat the plant by removing the bugs with a cotton swab dipped in alcohol.

Although we refer to Schlumbergera as a cactus, it’s really a tropical plant. During the spring and summer keep the plant consistently moist. Good soil drainage is important because root rot is a common problem with these plants.

If you plant is looking a little worse for wear, you can give it a hair cut in early summer. Simply snip off the top 2 or 3 segments of each stem. This will make the plant bushier and promote flower development. You can then root these cuttings to make more plants.