Pest identification
What's eating my crown cactus?
Mealybugs
Signs: White cottony clusters at the stem base and between spines; stunted growth and shrivelling
Control: Dab with a cotton swab dipped in 70% isopropyl alcohol; treat every 7–10 days; isolate the plant
Root mealybugs
Signs: Unexplained wilting and yellowing despite correct watering; white powdery residue visible on roots when unpotted
Control: Unpot, wash roots clean, soak in diluted neem solution, repot into fresh dry cactus mix
Spider mites
Signs: Faint webbing and bronze or silvery speckling on the cactus body, especially in hot dry conditions
Control: Blast off with water, then apply insecticidal soap or neem oil spray; raise humidity slightly
Keep crown cactus pest-free
Healthy plants resist pests best. Get the basics right:
Crown Cactus pests — FAQ
What is eating my crown cactus?
Crown Cactus (Rebutia minuscula) is most threatened by mealybugs, which hide at the base and between spines. Spider mites and scale insects also attack when conditions are warm and dry. Root mealybugs are a sneaky indoor hazard. Inspect regularly, especially the base where pests shelter unseen.
How do I get rid of mealybugs on crown cactus?
White cottony clusters at the stem base and between spines; stunted growth and shrivelling Dab with a cotton swab dipped in 70% isopropyl alcohol; treat every 7–10 days; isolate the plant
How do I get rid of root mealybugs on crown cactus?
Unexplained wilting and yellowing despite correct watering; white powdery residue visible on roots when unpotted Unpot, wash roots clean, soak in diluted neem solution, repot into fresh dry cactus mix
How do I get rid of spider mites on crown cactus?
Faint webbing and bronze or silvery speckling on the cactus body, especially in hot dry conditions Blast off with water, then apply insecticidal soap or neem oil spray; raise humidity slightly