Causal agentsOphiostoma ulmi · Ophiostoma himal-ulmi · Ophiostoma novo-ulmiHostselm treesVectorselm bark beetlePreventive treatmentThe first attempts to control Dutch elm disease consisted of pruning trees to remove and burn diseased timber. While this method was effective in New York State and adjacent areas, its cost made it uneconomi… See more
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- Dutch elm disease (DED) is a fungal disease that causes wilt and death in all species of elm native to Minnesota12. It is caused by the invasive fungal pathogen, Ophiostoma novo-ulmi, and is spread by elm bark beetles12. The disease was originally believed to be native to Asia, but was accidentally introduced into America and Europe, where it has devastated native populations of elms that did not have resistance to the disease2.Learn more:✕This summary was generated using AI based on multiple online sources. To view the original source information, use the "Learn more" links.
Dutch elm disease (DED) causes wilt and death in all species of elm native to Minnesota. The disease is caused by the invasive fungal pathogen, Ophiostoma novo-ulmi, and occurs throughout Minnesota. Elm bark beetles spread the DED fungus when feeding. The DED fungus can spread from tree to tree through root grafts.
extension.umn.edu/plant-diseases/dutch-elm-diseaseDutch elm disease ( DED) is caused by a member of the sac fungi (Ascomycota) affecting elm trees, and is spread by elm bark beetles. Although believed to be originally native to Asia, the disease was accidentally introduced into America and Europe, where it has devastated native populations of elms that did not have resistance to the disease.
en.wikipedia.org/wiki/Dutch_elm_disease Dutch elm disease | UMN Extension
Learn how to identify, manage and prevent Dutch elm disease, a fungal infection that kills elm trees in Minnesota. Find out which elm varieties are resistant or toler…
- The native elm bark beetle (Hylurgopinus rufipes), the smaller European elm bark beetle (Scolytus multistriatus), and the banded elm bark beetle (S. schevyrewi) can all carry spores of the DED fung...
- Adult females of all three species of elm bark beetle lay eggs under the bark of recently dead or dying trees, or in firewood or logs with firmly attached bark.
- The native elm bark beetle (Hylurgopinus rufipes), the smaller European elm bark beetle (Scolytus multistriatus), and the banded elm bark beetle (S. schevyrewi) can all carry spores of the DED fung...
- Adult females of all three species of elm bark beetle lay eggs under the bark of recently dead or dying trees, or in firewood or logs with firmly attached bark.
- Larvae feed on the tree's inner bark and sapwood, creating galleries and tunnels as they feed.
- If the tree is infected with or was killed by DED, the DED fungus will be present in the wood. Sticky spores of the DED fungus are produced within tunnels and galleries created by the bark beetles.
Dutch elm disease | Description, History, Symptoms, …
Dutch elm disease, widespread fungoid killer of elms (Ulmus species) and certain other trees, first described in the Netherlands. Spread by bark beetles, the disease has decimated elm populations throughout much of Europe and North …
Dutch Elm Disease | National Invasive Species …
Species Profile: Dutch Elm Disease. Lethal fungal disease of elm trees (particularly American elms (Ulmus americana), which are more susceptible to the disease than other elm species) (Olson et al.)
Dutch Elm Disease – Signs, Symptoms, and …
Jun 30, 2016 · Learn how to identify and control Dutch elm disease, one of the most devastating shade tree diseases in North America. Find out how the fungus affects the tree's vascular system, how it spreads, and what methods can help …
Dutch elm disease | The Morton Arboretum
Dutch elm disease (DED) is most easily detected during early summer when the leaves on an upper branch curl and turn gray-green or yellow and finally brown. This condition is known as flagging, but a flag alone is not absolute assurance …
Dutch Elm Disease - NC State Extension Publications
Feb 4, 2025 · Learn about the fungal disease that affects elm trees and causes crown dieback and tree mortality. Find out the signs, symptoms, management, and prevention of Dutch elm disease in North Carolina.
Dutch elm disease (DED): Causes, Life Cycle, Management
Dec 16, 2024 · Learn about the fungi, beetles, and root grafts that cause Dutch elm disease, a vascular wilt of elms that kills millions of trees worldwide. Find out how to identify, monitor, and …
Dutch Elm Disease [fact sheet] - Extension
Learn about the symptoms, causes, and management of Dutch elm disease, a destructive fungal infection that affects native elm species. Find out how to identify, prevent, and treat the …
Dutch elm disease - RHS Gardening
Dutch elm disease (DED) is a serious disease of elms caused by the fungus Ophiostoma novo-ulmi. It is a type of disease known as a vascular wilt because the fungus blocks the vascular …
Dutch Elm Disease (Ophiostoma novo-ulmi)
Learn about the symptoms, spread and impact of Dutch elm disease, a fungal infection that has killed millions of elm trees in the UK. Find out what the Woodland Trust is doing to protect and restore elm populations.
Dutch elm disease - inspection.canada.ca
Learn about the fungus that kills elm trees, how it spreads, where it's found and how to prevent it. Find out the elm pruning bans, firewood regulations and how to report a sighting of the disease …
Dutch Elm Disease - Center for Agriculture, Food, and the …
Learn about the symptoms, causes, and management of Dutch elm disease, a lethal vascular wilt disease of American elm. Find out which elm cultivars are resistant or susceptible to the …
Dutch elm disease: Symptoms and Diagnosis - Forest Research
Dutch elm disease is one of the world’s most serious tree diseases. It is caused by the fungus Ophiostoma novo-ulmi, which invades and blocks the water-conducting systems of trees. This...
Dutch Elm Disease and Its Control - Oklahoma State University
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 …
Dutch Elm Disease: Identifying, Treating, and Preventing This …
What is Dutch Elm Disease? Dutch elm disease is a devastating fungal disease that affects elm trees and, on rare occasion, Zelkova. The source fungus likely originated in Asia.
Managing Pests in Gardens: Diseases: Dutch Elm Disease—UC …
Dutch elm disease (DED) is caused by introduced vascular wilt fungi, Ophiostoma (=Ceratocystis) ulmi and O. novo-ulmi. Dutch elm disease initially causes foliage to yellow and wilt, usually first …
How To Identify Dutch Elm Disease: Signs & Symptoms
Apr 13, 2023 · Learn how to identify Dutch elm disease, a fungal pathogen that kills elm trees, and how to prevent and dispose of it. Find out which elms are resistant and how to protect your …
Dutch Elm Disease - Missouri Botanical Garden
Dutch elm disease is a wilt disease caused by the fungus, Ceratocystis ulmi. It was described in Ohio in 1930. By the 1980s, it could be found in most of the U.S. It is a serious and fatal …
Dutch elm disease - Teagasc | Agriculture and Food …
Learn about the history, symptoms and spread of Dutch elm disease, a fungal infection that killed most elm trees in Europe. Find out how to identify and collect resistant elm genotypes in Ireland.
End of an era: Historic elm tree at Washington church comes down
5 days ago · But Dutch elm disease devastated elm trees across America; the U.S. Forest Service estimates that the disease has killed more than 40 million American elms. Because elms had …
Ulmus × hollandica 'Major' - Wikipedia
In areas unaffected by Dutch elm disease, 'Major' often attains a height of > 30 m, with a short bole and irregular, wide-spreading branches. In open-grown specimens, the canopy is less …
End of an era: Historic elm tree at Washington church comes down
5 days ago · But Dutch elm disease devastated elm trees across America; the U.S. Forest Service estimates that the disease has killed more than 40 million American elms.
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