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Gloxinia Edema After Mealybug Treatment

Gloxinia had mealybugs, treated with white oil. Now leaves show brown spots (see photo). Expert suspects edema (oedema)—roots take up water faster than leaves transpire, cells burst.

Causes & Fix

Winter: low light, cool temps, moist soil = edema prone.
Oil coating may have slowed transpiration.
Reduce watering, keep soil dry side.
Lower humidity <70%, increase air circulation.
Most recover in spring/summer.

Gloxinia picture

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