Dogwood Tree Leaves Brown Edges
Dogwood trees are shallow rooted with a fairly small root ball so the tree will likely need to be watered during dry periods for a couple of years.
Dogwood tree leaves brown edges. Provide additional moisture if required or afternoon shade noon to 5 p m. Trees roots can absorb herbicides applied to weeds under the trees. Ascochyta cornicola is a fungus that appears on dogwood foliage after unusually rainy springs attacking new leaves as they emerge. Blight begins with small brown centered gray spots that appear on leaf surfaces and distort leaf growth.
The hatched larvae also orange tunnel into kousa dogwoods by. Affected leaves turn yellow or brown along the edges and curl due to water stress. There are a number of possible reasons for dogwood cornus florida leaves to turn brown. Drought and water stress drought and water stress can cause leaf scorch as discussed above or it can lead to wilting especially in recently.
During windy conditions chemical weedkillers used on plants in one location can cause brown leaf edges in nearby plants. Unfortunately based on your description it is impossible to give you a definitive diagnosis. Among the most common are both over and under watering as well as a number of diseases. Flowering dogwoods are understory trees that do not tolerate long periods of full sun.
This year i would keep the soil constantly damp but not soggy. This seems to have stopped the browning of leaves from progressing. The adult pests tiny orange flies lay eggs on leaves. A variety of environmental stressors can cause an alarming curl known as leaf scorch in dogwood leaves.
It is important to keep your dogwood tree. It is a young tree. The tree is a chinese dogwood cornus kous chinensis which i believed was not susceptible to anthracnose. Dogwood clubgall midges resseliella clavula also tunnel into dogwoods.
When a dogwood tree does not receive adequate water the leaves of the tree begin to dry with the edges becoming brittle and brown leading to leaf loss. Last year starting in about july one of my dogwood trees developed brown crispy leaves. It began on the leave tip and edges and within a month or two each leaf was nearly entirely brown. In the heat of summer and or during periods of drought the edges of leaves may turn brown.