How Do I Know If My Tree Has Dutch Elm Disease?
– Leaves wilt, turn yellow, and ultimately turn brown.
– Premature leaf drop.
– Flagging or branch death.
– Brown streaking in sapwood—the newly formed, softer outer layer of wood underneath the bark
- Leaves wilt, turn yellow, and ultimately turn brown. - Premature leaf drop. - Flagging or branch death. - Brown streaking in sapwood—the newly formed, softer outer layer of wood underneath the bark
- American elm (Ulmus americana) Some varieties of American elm have a higher tolerance to the disease and may recover if infected. These are often marketed as DED resistant. - Red or slippery elm (U. rubra) - Rock elm (U
Dutch elm disease (DED) is one of the most destructive shade tree diseases in North America and has become one of the most widely known and destructive tree diseases in the world. All species of elms native to North America are susceptible to DED, but it is most damaging to American elm, Ulmus americana
The Chinese elm is highly resistant (but not immune) to the Dutch elm disease, which has been devastating to the American elms throughout the country. It is moderately resistant to the elm leaf beetle (Xanthogaleruca luteola), but is susceptible to Elm Yellows disease
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