Troubleshooting
Cross Pincushion problems — and how to fix them
Cross Pincushion (Mammillaria crucigera) 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
Most common issue; caused by overwatering or poor drainage. Allow soil to dry fully between waterings and ensure the pot has drainage holes.
Mealybugs
White cottony clusters appear at the base of tubercles. Remove with a cotton swab dipped in isopropyl alcohol or treat with neem oil.
Scale insects
Brown waxy bumps on the body. Scrape off with a soft brush and treat with horticultural oil.
Etiolation
Stretching toward light with wide spacing between tubercles indicates insufficient light. Move to a sunnier position.
No flowers
Flowering requires a cool, dry winter rest period. Keep temperatures around 10°C and water sparingly from October to February.
Prevent cross pincushion problems before they start
Most cross pincushion issues are care-mismatch, not bad luck. Dial in the basics:
Cross Pincushion problems — FAQ
Why is my cross pincushion root rot?
Most common issue; caused by overwatering or poor drainage. Allow soil to dry fully between waterings and ensure the pot has drainage holes.
Why is my cross pincushion mealybugs?
White cottony clusters appear at the base of tubercles. Remove with a cotton swab dipped in isopropyl alcohol or treat with neem oil.
Why is my cross pincushion scale insects?
Brown waxy bumps on the body. Scrape off with a soft brush and treat with horticultural oil.
Why is my cross pincushion etiolation?
Stretching toward light with wide spacing between tubercles indicates insufficient light. Move to a sunnier position.
Why is my cross pincushion no flowers?
Flowering requires a cool, dry winter rest period. Keep temperatures around 10°C and water sparingly from October to February.