Troubleshooting
Pima Pineapple Cactus problems — and how to fix them
Pima Pineapple Cactus (Coryphantha sulcata) is generally forgiving once you match its basics, but a few issues come up again and again. Here is what each one looks like, why it happens, and the fix.
Root rot
Persistent wet soil, especially in cool conditions, causes rot. Water only when the soil is fully dry and maintain a dry winter rest.
Failure to flower
Insufficient winter dormancy is the most common cause. Reduce watering and allow a cool (7-12°C) dry rest from October to February.
Mealybugs
White woolly colonies in the spine axils. Treat with isopropyl alcohol swabs or a systemic insecticide.
Scale insects
Brown crusts on the body of the cactus. Scrape off and apply a horticultural oil spray.
Splitting of body
Rapid watering after drought can cause the body to split. Water slowly and consistently during the growing season to avoid sudden uptake.
Prevent pima pineapple cactus problems before they start
Most pima pineapple cactus issues are care-mismatch, not bad luck. Dial in the basics:
Pima Pineapple Cactus problems — FAQ
Why is my pima pineapple cactus root rot?
Persistent wet soil, especially in cool conditions, causes rot. Water only when the soil is fully dry and maintain a dry winter rest.
Why is my pima pineapple cactus failure to flower?
Insufficient winter dormancy is the most common cause. Reduce watering and allow a cool (7-12°C) dry rest from October to February.
Why is my pima pineapple cactus mealybugs?
White woolly colonies in the spine axils. Treat with isopropyl alcohol swabs or a systemic insecticide.
Why is my pima pineapple cactus scale insects?
Brown crusts on the body of the cactus. Scrape off and apply a horticultural oil spray.
Why is my pima pineapple cactus splitting of body?
Rapid watering after drought can cause the body to split. Water slowly and consistently during the growing season to avoid sudden uptake.