white stuff on Xmas cactus
Every year I get white stuff growing on the joints of the xmas cactus. It mostly goes away if I move it to a different location and cut it back. What is it, and can I get rid of it permanently?
Certified GKH Gardening Expert
Your Christmas cactus may have a mealybug or other scale bug infestation. Please see this article for more information and control methods: