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Cochineal Scale on Moon Cactus: Red Dye Confirms Diagnosis

Moon cactus with white scale patches

Diagnosis Confirmed

Beige "seeds" on window-side stems = cochineal scale. Squeeze test: red liquid confirms. South Florida climate + open window = perfect introduction vector.

Treatment

  1. Dish soap + water in spray bottle.
  2. Spray heavily on scale colonies.
  3. Tilt pot sideways to protect soil from soap.
  4. High-pressure rinse.
  5. White coating may persist; insects die.
  6. Repeat weekly until clear.

Why Window Side?

Crawlers (mobile nymphs) disperse on air currents—window screen catches them.

Non-toxic, effective, and satisfying to watch them disappear.

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