It is essential to acquire disease free transplants. The other Colletotrichum species cause fruit rot, flower blight or leaf spots. Stolons and petioles can also be infected. Rigorous fungicide programs are necessary to minimize losses to anthracnose diseases. Under favorable conditions for disease development, chemical control may give disappointing results.
Varieties vary in susceptibility.
It occurs in all areas of Texas. At first, small round purple spots are seen on the upper side of the leaves. As the leaf matures, the center of the spot becomes tan or gray then almost white while the edges of the spot remain purple. On the underside of the leaf, the spots are bluish or tan in color. Varieties vary in their resistance to Cercospora leaf spot.