Dogwood Tree Disease Resistant
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One of the very common diseases of dogwood trees is the dogwood anthracnose which is caused by the fungus discula sp.
Dogwood tree disease resistant. While dogwoods remain a staple feature of the greater rochester area s spring landscape in many areas they are in decline. Florida are resistant to anthracnose and decline and should be used to replace dying trees. Kousa and hybrids of kousa and native dogwood c. Like the other dogwood trees featured in this article the kousa dogwood is known for its toughness.
An upright tree to about 30 feet the korean dogwood s june flowering is. Yet its white flowers are every bit as attractive even if they show up a couple weeks later. The following update is from tom ranney professor of horticultural. The infection is manifested in the form of leaf spots and stem cankers.
Developed by rutgers the stellar series including stellar pink constellation celestial and aurora show some resistance against anthracnose and powdery mildew and a high degree of resistance against dogwood borer. However there are excellent disease resistant options for this versatile small tree. The initial symptoms appear as medium to large purple bordered leaf spots and scorched tan blotches. Tartarian dogwood cornus alba redosier dogwood c.
Plant disease resistant cultivars of flowering dogwoods. Sericea and cornelian cherry c. Kousa dogwood cornus kousa is generally resistant to dogwood anthracnose and is a better choice for replanting in sites where dogwoods have died from this disease. It is resistant to anthracnose powdery mildew and other diseases as well as having some drought resistance.
Apply a fungicide during bud break to protect new flowers twigs and foliage. Avoid over application of fertilizer which can result in succulent new growth with greater susceptibility to disease. Another small tree that is sure to dazzle visitors year round is the kousa dogwood cornus kousa a native of japan. Mas also are resistant to this disease.
To increase your chances of enjoying a healthy dogwood choose a cultivar with disease resistance to both anthracnose and powdery mildew. Recent progress has been made in developing dogwoods that resist disease especially anthracnose and other fungal attackers. Most resistant to dogwood anthracnose is cornus kousa and its slightly larger version c. This is due to the tree s susceptibility to anthracnose.
Rake and destroy fallen leaves. Lastly let s consider disease resistant dogwood trees.
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