Dogwood Anthracnose Fact Sheet

Dogwood anthracnose discula destructiva is often described as the most serious disease that affects dogwood species specifically flowering cornus florida and mountain c.

Dogwood anthracnose fact sheet.

Remove all pruned wood to reduce any. The mildew which often causes a. Dogwood powdery mildew has also become a recent major threat to dogwoods. Anthracnose of trees and shrubs.

Although wet weather tends to favor this disease temperature is the most important factor. The disease was first noticed on the flowering dogwoods in new york and connecticut in 1978 1 and on mountain dogwoods. It is also an important disease of pacific dogwood cornus nuttallii in the west. Other common landscape dogwoods such as.

The southern part of the state is included in the northern transitional zone where patches of. For trees diagnosed with dogwood anthracnose carefully prune out all dying and dead twigs and limbs to prevent the disease from spreading to the main trunk. Dogwood anthracnose is a disease caused by the fungus discula destructiva. Plant pathology fact sheet flowering dogwood diseases figures 1 2.

Sycamore ash maple oak and privet are especially susceptible. A few cases have been reported at lower elevations where dogwoods are grown in very cool moist shady locations. Spot anthracnose appears as reddish purple spots on bracts of flowering dogwood. If daily temperatures average above 60 f at bud break anthracnose is usually not severe.

The fungus discula destructiva causes dogwood anthracnose leaf blight and canker. The native flowering dogwood cornus florida is a popular ornamental tree that thrives well in the warmer areas of new hampshire. Dogwood anthracnose infects flowering cornus florida and pacific dogwoods c. These diseases can be found throughout the eastern united states.

Dogwood anthracnose dogwood anthracnose is considered the most serious disease of flowering dogwood cornus florida in connecticut and the eastern seaboard. Dogwood anthracnose is most severe only in areas of the state that are higher than 2000 feet. It is a serious disease capable of killing large numbers of trees and most cornus species can become infected. Cool weather 50 to 55 f average daily temperature during leaf bud break and emergence greatly favors disease development whether it is wet or dry.

Anthracnose than late blooming cultivars. University of kentucky college of agriculture food environment extension plant pathology ppfs or w 06 college of agriculture food and environment. Anthracnose diseases are caused by fungi that are capable of infecting stems branches leaves and fruits of a wide variety of deciduous trees and shrubs. Kousa is also susceptible to infection but is highly resistant to the disease and typically suffers only minor leaf spotting.

Discula dogwood anthracnose fact sheet january 1 2003.