Red Stick Dogwood Disease
Apply a fungicide during bud break to protect new flowers twigs and foliage.
Red stick dogwood disease. The adult is an elongate 5 8 inch long beetle with long antennae. Florida are resistant to anthracnose and decline and should be used to replace dying trees. Department of agriculture plant hardiness zones 3 through 8. Dogwood twig borer oberea tripunctata larva.
They are loved by all due to the beautiful flowers that they bear. Kousa and hybrids of kousa and native dogwood c. Namely the bush s red twigs which are brightest from late winter to early spring. They go on to warn against pest infestations as well including the dogwood borer scales and dogwood club gall midges.
Dogwood trees scientifically known as the cornus florida are great for adding color to one s garden and landscape. Red twig dogwood canker disease often wilts plant parts on trees that appear healthy in every other way. Infected branches should be removed and burned to kill larvae before they hatch and spread to other dogwoods in the vicinity. Pests on red twig dogwoods.
In autumn when the leaves fall the plant is afire with upright flaming red stems adding plenty of interest to the winter garden. With off white well formed blooms that cluster in spring followed by rich green foliage in summer the fall surprise of carmine red branches is an extra treat. Fungicides work on the majority of red twig dogwood diseases. Protect trees from drought stress winter injury and dogwood borer attack.
The shrubs actually can provide year round interest despite bearing spring blossoms variegated leaves during summer and berries from summer to fall clearly this plant s common name explains the main reason that people grow it. The variegated red twig dogwood cornus alba elegantissima is a deciduous shrub that grows to a height of between 6 and 8 feet tall with a 4 to 6 foot spread. If disease is severe enough to warrant the use of fungicides be sure that the dogwood is a valuable specimen and the spray equipment can provide good coverage. Dogwood trees are prone to these diseases and problems.
Known as the red twig or redosier dogwood cornus sericea has striking bright red branches that provide contrast and interest in the late fall and winter garden landscape. For fungicides to be effective they must be applied as soon as symptoms are noticed. Sericea is very susceptible to powdery mildew. Rake and destroy fallen leaves.
Leaves wilt in response to the infection existing within the branch.