Dogwood Tree Leaves Turning White
There are any number of diseases and pests that can stress your dogwood and cause dogwood leaf drop.
Dogwood tree leaves turning white. Curling deformed leaves are another sign of powdery mildew. The whiteflies are tiny sap sucking pests that fly off the plant when the dogwood is disturbed. Watering from overhead and even rainfall contributes to powdery mildew. Shake the dogwood tree gently to check for a whitefly infestation.
Powdery mildew is a fungal disease that thrives in wet humid conditions. Dogwood cornus spp is a harbinger of spring for many its large white to pink flowers smothering the plant with delicate petals even before its foliage has unfolded. As the disease progresses the leaves may cup or curl upward. When a dogwood tree does not receive adequate water the leaves of the tree.
On dogwood trees mycrosphaeria pulchra is the causal pathogen for powdery mildew. It is normal to see leaves falling in autumn but you should not see a dogwood tree dropping leaves in summer. When leaves are falling off dogwood in summer it could mean a serious illness improper siting or cultivation problems. It is usually only cosmetic.
Botrytis blight or gray mold gray mold is a common fungal disease on fading flowers. This white powdery growth is common on dogwood leaves and twig tips. If you see the white coating and cupped leaves on your tree fungicides cannot cure the disease which is already established. Use a water hose to spray the.
Powdery mildew if your dogwood s leaves were covered in a white powdery substance before they began to fade to light green or yellow and cup powdery mildew is likely the cause of your dogwood. During wet spring weather falling dogwood petals bracts develop mold as in the tan spots with pink haloes pictured on the left. If your dogwoods have a white substance on the leaves and buds powdery mildew may be the culprit.