Kousa is also susceptible to infection but is highly resistant to the disease and typically suffers only minor leaf spotting.
Dogwood anthracnose fact sheet.
For this reason it can be beneficial to plant your dogwood in late spring when warm temperatures will kill the fungus which thrives in cooler wet weather.
It is also an important disease of pacific dogwood cornus nuttallii in the west.
Sycamore ash maple oak and privet are especially susceptible.
It is a serious disease capable of killing large numbers of trees and most cornus species can become infected.
The mildew which often causes a.
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.
These diseases can be found throughout the eastern united states.
Discula dogwood anthracnose fact sheet january 1 2003.
Other common landscape dogwoods such as.
Anthracnose than late blooming cultivars.
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.
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.
Dogwood anthracnose is most severe only in areas of the state that are higher than 2000 feet.
Spot anthracnose appears as reddish purple spots on bracts of flowering dogwood.
Remove all pruned wood to reduce any.
Although wet weather tends to favor this disease temperature is the most important factor.
Nuttallii dogwood species in the united states.
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.
Plant pathology fact sheet flowering dogwood diseases figures 1 2.
If daily temperatures average above 60 f at bud break anthracnose is usually not severe.
University of kentucky college of agriculture food environment extension plant pathology ppfs or w 06 college of agriculture food and environment.
The fungus discula destructiva causes dogwood anthracnose leaf blight and canker.
A few cases have been reported at lower elevations where dogwoods are grown in very cool moist shady locations.
The southern part of the state is included in the northern transitional zone where patches of.
Dogwood powdery mildew has also become a recent major threat to dogwoods.
The disease was first noticed on the flowering dogwoods in new york and connecticut in 1978 1 and on mountain dogwoods.
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 dogwood anthracnose is considered the most serious disease of flowering dogwood cornus florida in connecticut and the eastern seaboard.
