Cochineal Scale on Broadleaf Cactus: Identification and Treatment

Diagnosis

White cottony patches = cochineal scale (Dactylopius spp.). Protective coating from tiny black insects. Squeezing releases red dye (historical cochineal dye source). Fatal if unchecked.

Treatment Protocol

1. Mix dish soap + water in spray bottle.
2. Spray infected areas thoroughly.
3. Blast with high-pressure hose water.
4. Repeat weekly until eradicated.
5. Isolate from other plants during treatment.

Prevention

• Inspect new plants carefully.
• Improve air circulation.
• Ants farm scale—control ants if present.

Early detection and mechanical removal are highly effective.