Colletotrichum has an extremely wide host range including vegetables, field and forage crops, fruit trees, and ornamentals. It infects foliage and fruits, particularly in warm, wet weather. Colletotrichum can affect stem tips causing die back and stem lesions. Colletotrichum commonly infects young succulent stems, petioles, and fruits, but all aboveground plant parts are susceptible. In general, leaf lesions are dark brown to black and may be associated initially with a leaf vein.
Lesions initially appear as small, sunken water-soaked spots.
Orange-pink to brownish spore masses may be seen on older lesions. The disk or cushion shaped acervuli break through the surface of host tissue. Short, simple, colorless conidiophores produce abundant conidia. Long, black setae may or may not be produced among conidiophores. Conidia are colorless when viewed alone, but may appear pink or salmon colored en mass.