How do you treat leaf spots on dogwood? 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).
What causes brown spots on dogwood 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.
Why does my dogwood bush have brown spots on the leaves?
What is causing those brown spots, and is there anything I can do about it? Anthracnose is a common problem on dogwoods. Fortunately the strain of this fungus that attacks our dogwoods is not lethal like the one killing the flowering dogwoods of the south.
Why is my dogwood dropping leaves?
Cause: Dogwood has shallow roots and doesn't like long periods of hot, dry weather. If it dries out even for a single day, the outermost leaves will scorch and stay that way or drop. If this isn't severe, the tree will recover. If you see wilting leaves in morning, water the tree immediately and thoroughly.
How do you stop leaves scorching?
Environmental and Nutritional Leaf Scorch Treatment
Help your tree maintain its vitality with these steps: During stretches of sunny, hot, and dry days, water your tree deeply. Lock in soil moisture by mulching your tree. Fertilize trees regularly to provide needed nutrients.
Related faq for How Do You Treat Leaf Spots On Dogwood?
What is killing my dogwoods?
Abstract. Dogwood anthracnose, caused by the fungus Discula destructiva was found in the Southern United States in 1987. Since that time millions of flowering dogwoods have been killed and disfigured by this disease.