The Senior Horticulturist Allen Owings of Bracy’s Nursery has answered this question many times in the last month. Why do my sasanqua leaves look like this (see photo)?
This is a physiological problem called edema. This occurs usually in late winter and early spring and is associated with high humidity, rainfall, cloudy conditions. We sure had that November – February.
Edema occurs in camellias when cells in the leaves rupture and cause corky spots of lesions. No treatment is needed. This will gradually “fade away” with the new spring foliage growth flush.