University of Hawaii at Manoa
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Citrus Scab

Citrus scab

Photo: Dr. Scot C. Nelson, CTAHR


Citrus scab causes light brown, wart-like scabs on the leaves, twigs and fruit of susceptible tangerine, lemon, lime and orange trees. It is caused by a fungus spread by rain. Scab color may range from pink to light brown with initial infection and change to grey or black later.

citrus scab

Photo: Dr. Wayne Nishijima


Kendal Lyon, Hawaii Island Master Gardeners