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Cornus kousa is a small deciduous tree 8–12 m (26–39 ft) tall, in the flowering plant family Cornaceae. Common names include kousa, kousa dogwood, [2] Chinese dogwood, [3] [4] Korean dogwood, [4] [5] [6] and Japanese dogwood. [2] [4] Synonyms are Benthamia kousa and Cynoxylon kousa. [7] It is a plant native to East Asia including Korea ...
Discula destructiva is a fungus in the family Gnomoniaceae which causes dogwood anthracnose, affecting populations of dogwood trees native to North America. [1]It was introduced to the United States in 1978 and is distributed throughout the Eastern United States and the Pacific Northwest.
The disease is characterised by the trees bleeding or oozing a dark fluid from small lesions or splits in their bark. [1] Unlike chronic oak decline, acute oak decline can lead to the death of trees within 4 to 5 years of symptoms appearing.
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A healthy tree naturally combats heart rot through a process called compartmentalization. The tree grows around the decayed wood tissue and prevents the fungus from spreading to a larger area of the trunk. Providing a tree with the necessary nutrients, water, and growing conditions will promote healthy growth and minimize rot.
In regions where dogwood anthracnose is a problem, homeowners and public land managers are encouraged to know the symptoms and inspect trees frequently. The selection of healthy, disease-free planting stock is essential and transplanting trees from the forest, particularly from mountain forests, should be avoided. [11]
Early stages of the disease show a light brown and tan color that looks dry and dusty. Later on, as the pathogen goes through the sexual stage, the bark will turn to a dark grey color. The bark becomes brittle and flakes off, [2] and black and grey cankers will appear. [1] These changes are symptoms, indications of a disease.
Grapevine trunk diseases (18 P) W. Wood-decay fungi (12 P) Σ. Fungal tree disease stubs (135 P) Pages in category "Fungal tree pathogens and diseases"