Why are the leaves on my Kousa dogwood curling?
Leaf curl on dogwoods is essentially a protective reaction to stress the tree feels. Rather than keep its leaves flat and susceptible to burning in the summer sun, dogwoods curl their leaves to minimize leaf surface area and thus minimize any damage they might receive.
What is wrong with my Kousa dogwood?
Kousa dogwoods are also susceptible to crown canker disease, caused by the fungal pathogen Phytophthora cactorum. Though often worse on young or weak trees, this soil-borne disease can also affect healthy dogwoods. To control this problem, gardeners should remove and destroy the affected tree.
What does dogwood anthracnose look like?
Anthracnose attacks twigs, branches, trunks, and leaves of dogwoods in cool, wet weather. Tan, blotchy leaf spots are early signs of infection. The disease can cause dead leaves and twigs that remain attached to the tree.
Why does my dogwood tree have brown spots on the leaves?
Symptoms of Spot Anthracnose: Spot anthracnose is caused by the fungus, Elsinoe corni. Symptoms include small, dark, pinprick lesions with purple borders on leaf surfaces. The lesions are numerous and usually occur on dry leaves. The disease is unsightly, but typically not very harmful.
How do you know if your dogwood tree is getting too much water?
Another symptom of over-watered dogwood trees is the changing leaf color. Leaves may turn yellow or light green to indicate stress from too much moisture. The signs of root rot are wilting leaves and branches and leaf scorch, a condition marked by the browning of the edges and tips of a plant’s leaves.
How do I revive my Kousa dogwood?
Solution: Put down several inches of mulch around the base of the tree (not touching the trunk). The mulch will cool the soil and help it retain moisture. Check the leaves regularly during hot, dry spells. If you see wilting leaves in morning, water the tree immediately and thoroughly.
Is kousa dogwood resistant to anthracnose?
Dogwood anthracnose infects flowering (Cornus florida) and Pacific dogwoods (C. nuttallii). Kousa dogwood (C. kousa) is also susceptible to infection but is highly resistant to the disease and typically suffers only minor leaf spotting.
When do you treat dogwood anthracnose?
Fungicide sprays to protect the new leaves and shoots need to begin at bud break in early spring. Fungicides for spot anthracnose will also help to control dogwood anthracnose. These include chlorothalonil, mancozeb, propiconazole, thiophanate-methyl, or copper fungicides (see Table 1 for specific products).
How do you treat leaf spots on dogwood?
What is the best fertilizer for a Kousa dogwood?
If the soil is rich in organic matter, the kousa dogwood may not need supplemental fertilizer. If it does need fertilizing, you can use a standard 12-4-8 or 16-4-8 synthetic fertilizer . A fertilizer rich in nitrogen will promote lush leaf growth, but it may reduce the number of flowers on the kousa dogwood.
Is Kousa dogwood fruit edible?
Kousa Dogwood fruit is the primary edible part of Kousa Dogwood Cornus kousa ), which is a small tree or shrub native to Asia that is now a very popular landscape plant in the US. It is also called Japanese Dogwood, Korean Dogwood, and Chinese Dogwood, there are many cultivated varieties in existence.
Is the Kousa dogwood tree puppy-friendly?
They’re not listed by the ASPCA as toxic to dogs . Kousa dogwood develops colorful, peeling bark in shades of tans and browns which lend great character to the tree. The thin bark is easily damaged, and your puppy could do harm to the tree if it wounds the bark. Wounds also provide an entry point for diseases and insect pests.
Are dogwood tree flowers poisonous?
A Dogwood tree is a spring flowering tree that bears pink or white flowers. In the fall, bright red berries appear at the point where the leaves meet the branches. Dogwood berries are not toxic when eaten, but there have been reports of rashes after skin contact with the tree .