Dogwood Tree Leaves Have Brown Spots

Also large brown blotches of dead tissue may occur on leaf tips along the margin of leaves or between the veins.

Dogwood tree leaves have brown spots. Dispose of the. Department of agriculture plant hardiness zones 2 through 9 depending on species. The soil around the tree is mulched with bark. But nothing is visible from the top.

Leaf symptoms develop first in the lower canopy and progress up the tree. Tiny dark brown fungal fruiting structures dot the brown areas. A fungicide treatment for this disease is normally not warranted. Infected leaves have tan spots with purple edges dry brown margins or large blotches on them.

Some of the brown spots on my tree s leaves do have a reddish perhaps purplish border when viewed from the underside. Blighted gray or drooping leaves hang on the twigs and are often the first symptoms noticed during cool wet weather. It is normal to see leaves falling in autumn but you should not see a dogwood tree dropping leaves in summer. Although leaf scorch is rarely fatal.

The disease seldom kills the tree but it distorts the leaves late in the growing season. It appears on dogwood leaves in late summer with purplish irregularly shaped spots that have small veins radiating from the center. The many graceful shapes of dogwoods cornus spp are known throughout u s. You should remove any infected leaves including dead material on the tree and compost the material thoroughly or dispose of it to stop the disease life cycle.

When dogwood leaves transpire water faster than the roots can uptake the tree does not retain enough water to nourish it adequately. Anthracnose exhibits a purple border around the leaf damage. Because of its late development the best treatment is to simply rake up leaves when they fall to remove the fungus and knock back its ability to reproduce. The leaves are cupping up on my dogwood.

Louis area it was found in the. Without proper health and care over time your. Conditions that favor disease include low light levels high humidity and temperatures of 60 f. The disease is unsightly but typically not very harmful to the tree.

There are any number of diseases and pests that can stress your dogwood and cause dogwood leaf drop. This disorder causes unsightly distorted and curled leaves that often have brown margins. Brown spots up to 1 4 inch in diameter go entirely through the leaf and have reddish brown halos. A stressed dogwood tree shows signs of its struggle through stunted growth leaf drop or twig dieback as well as dogwood leaves turning brown.

Symptoms of discula anthracnose on dogwood cornus florida leaves. When leaves are falling off dogwood in summer it could mean a serious illness improper siting or cultivation problems. Joseph o brien usda forest service. Small reddish brown spots without brown centers may pepper portions of the leaf or extend along veins.

Most of the time the brown spots on dogwoods is spot anthracnose.