COMMENTS on disease
Anthracnose is a fungal
disease that tends to attack plants in the spring when the weather is cool and
wet, primarily on leaves and twigs. The fungi overwinter in dead twigs and
fallen leaves. Cool, rainy weather creates perfect conditions for the spores to
spread. Dry and hot weather stop the progression of the disease.
Anthracnose fungus infects many deciduous and evergreen trees and shrubs, as well as fruits, vegetables and grass.
Anthracnose is noticeable along the leaves and the veins as small lesions.
These dark, sunken lesions may also be found on stems, flowers and fruits.
In order to distinguish between anthracnose and other leaf spot diseases,
you should carefully examine the undersides of leaves for a number of small tan
to brown dots, about the size of a pin head. If you are unsure about diagnosing
anthracnose, consult your local Cooperative
Extension office for assistance and
additional anthracnose disease info.
Anthracnose control begins with practicing good sanitation. Picking up and disposing of all diseased plant
parts, including twigs and leaves, from the ground or from around the plant is
important. This keeps the fungus from overwintering near the plant.
Proper pruning techniques
to rid trees and plants of old and dead wood also helps with prevention of
Keeping plants healthy by
providing proper light, water and fertilizer will strengthen the plant`s
ability to ward off a fungus attack. Stressed trees and plants have a difficult
time recovering from anthracnose fungus.
Chemical treatment is
rarely used except when the disease involves newly transplanted plants or