Dogwood Tree Disease Powdery Mildew

Sericea is very susceptible to powdery mildew.

Dogwood tree disease powdery mildew. Remove the infected tree and do not replace it with another woody ornamental until the soil has been fumigated and aerated. 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. Powdery mildew attacks all kinds of landscape plants including trees. Many common edible and ornamental garden plants are affected including apples blackcurrants gooseberries grapes crucifers courgettes marrows cucumbers peas grasses the powdery mildew fungi are major pathogens of cereal crops acanthus delphiniums phlox many ornamentals in the daisy family lonicera honeysuckle.

Deprive powdery mildew of excess succulent dogwood growth to feed on by avoiding fertilizers with high nitrogen content. Mulch the tree. Powdery mildew produces thousands of spores per square inch on a dogwood leaf. Powdery mildew is a disease which is common on many ornamental trees and shrubs including dogwoods.

Water no later than mid morning to reduce the humidity immediately around the dogwood. Powdery mildew a common fungal disease may destroy the beauty appearance of the dogwood tree. The canker slowly girdles the tree. The seedlings of this tree may suffer from root infection caused by the pythium fungus species.

It usually kills the seedlings before they reach the woody stage. In the southeast powdery mildew on dogwood is known to be caused by two different fungi microsphaera and phyllactinia. Fortunately although the disease is disfiguring it rarely kills a tree. How to get rid of powdery mildew on dogwood.

Powdery mildew is a fungal disease of the foliage stems and occasionally flowers and fruit where a superficial fungal growth covers the surface of the plant. We observed up to a 50 percent increase in caliper and height where fungicides were. Apply a fungicide to protect plants. Almost any tree species can be affected by powdery mildew but the most common are maple basswood dogwood lilac magnolia crabapple catalpa and oaks.

Today it is severely infected with another disease known as powdery mildew. New growth must be protected with sprays every 2 weeks frequency can vary with the fungicide selected and rate. Young plants and new growth are usually more severely damaged than older plants leaves or branches. Spores break off of small stalks and are wind blown to other trees.

Prune out dead limbs. Powdery mildew is a powdery white to light gray colored fungus that will grow on succulent stems leaves buds and flowers. For fungicides to be effective they must be applied as soon as symptoms are noticed.