# Dutch Elm Disease Information Center

> Comprehensive resource for Dutch Elm Disease information, covering symptoms, causes, treatment, prevention, and resistant elm varieties.

The Dutch Elm Disease Information Center is a reference covering the identification, biology, treatment, prevention, and history of Dutch Elm Disease, a vascular wilt of elm trees caused by Ophiostoma fungi. This file lists the site's articles for LLMs and AI assistants.

## Articles
- [Accolade™ Elm](https://www.dutchelmdisease.org/accolade-elm): Accolade Elm (Ulmus 'Morton') - a Morton Arboretum hybrid combining Japanese and Wilson's elm, with excellent Dutch Elm Disease resistance and upright vase form.
- [Allee® Elm](https://www.dutchelmdisease.org/allee-elm): Allee Elm (Ulmus parvifolia 'Emer II') - a vase-shaped Chinese elm selection with high Dutch Elm Disease resistance, drought tolerance, and mottled lacebark.
- [Athena® Elm](https://www.dutchelmdisease.org/athena-elm): Athena Elm (Ulmus parvifolia 'Emer I') - a compact rounded Chinese elm with high Dutch Elm Disease resistance, suited to smaller landscape spaces.
- ['Columella' Elm](https://www.dutchelmdisease.org/columella-elm): 'Columella' elm (Ulmus 'Columella') - a Dutch breeding program release with narrow columnar form, Dutch Elm Disease resistance, and use in tight urban spaces.
- ['Discovery' Elm](https://www.dutchelmdisease.org/discovery-elm): 'Discovery' elm (Ulmus davidiana var. japonica 'Discovery') - a cold-hardy Japanese elm cultivar bred in Manitoba for the Canadian prairies.
- ['Drake' Elm](https://www.dutchelmdisease.org/drake-elm): 'Drake' elm (Ulmus parvifolia 'Drake') - a weeping Chinese elm cultivar widely planted in southern US landscapes, with high natural Dutch Elm Disease resistance.
- [Dutch Elm Disease in Brighton and Hove](https://www.dutchelmdisease.org/dutch-elm-disease-brighton-and-hove): Dutch Elm Disease in Brighton and Hove - the South Coast English elm refugium, the National Elm Collection, and the geographic and management factors that preserved its canopy.
- [Dutch Elm Disease by Region](https://www.dutchelmdisease.org/dutch-elm-disease-by-region): Country, state, and city profiles of Dutch Elm Disease - history, losses, management programs, and surviving elm populations across North America and Europe.
- [Dutch Elm Disease in Canada](https://www.dutchelmdisease.org/dutch-elm-disease-canada): Dutch Elm Disease in Canada - 1940s arrival, westward spread, the exceptional Winnipeg urban elm preservation, and provincial management programs.
- [Dutch Elm Disease in Edinburgh](https://www.dutchelmdisease.org/dutch-elm-disease-edinburgh): Dutch Elm Disease in Edinburgh - the Scottish wych elm population, the Royal Botanic Garden Edinburgh elm collection, and the climate and management factors preserving the canopy.
- [Dutch Elm Disease in Minneapolis](https://www.dutchelmdisease.org/dutch-elm-disease-minneapolis): Dutch Elm Disease in Minneapolis - the city's elm canopy losses since the 1960s, the long-running municipal sanitation and injection program, and current status.
- [Dutch Elm Disease in Minnesota](https://www.dutchelmdisease.org/dutch-elm-disease-minnesota): Dutch Elm Disease in Minnesota - state-level history, the University of Minnesota breeding program, and the Twin Cities' leading municipal management programs.
- [Dutch Elm Disease in Toronto](https://www.dutchelmdisease.org/dutch-elm-disease-toronto): Dutch Elm Disease in Toronto - the city's elm canopy losses since the 1960s and current restoration-focused management with resistant cultivars.
- [Dutch Elm Disease in the United Kingdom](https://www.dutchelmdisease.org/dutch-elm-disease-united-kingdom): Dutch Elm Disease in the UK - the second-wave outbreak from 1967, the loss of 25 million elms, and the surviving English elm populations of Brighton and Edinburgh.
- [Dutch Elm Disease in the United States](https://www.dutchelmdisease.org/dutch-elm-disease-united-states): History, impact, and management of Dutch Elm Disease in the United States - 1930 arrival, the loss of the American elm canopy, and modern restoration efforts.
- [Dutch Elm Disease in Winnipeg](https://www.dutchelmdisease.org/dutch-elm-disease-winnipeg): Dutch Elm Disease in Winnipeg, Manitoba - the world's largest surviving urban American elm canopy and the long-running municipal management program that preserved it.
- [Dutch Elm Disease in Wisconsin](https://www.dutchelmdisease.org/dutch-elm-disease-wisconsin): Dutch Elm Disease in Wisconsin - state-level history, the University of Wisconsin Smalley breeding program origin of major resistant cultivars, and Madison and Milwaukee management programs.
- ['Jefferson' Elm](https://www.dutchelmdisease.org/jefferson-elm): 'Jefferson' elm (Ulmus americana 'Jefferson') - a hexaploid American elm cultivar with high Dutch Elm Disease resistance, selected from a 1932 Tidal Basin specimen.
- ['New Harmony' Elm](https://www.dutchelmdisease.org/new-harmony-elm): 'New Harmony' elm (Ulmus americana 'New Harmony') - a 1995 USDA National Arboretum release with high Dutch Elm Disease resistance and improved canopy form.
- [Prairie Expedition™ Elm](https://www.dutchelmdisease.org/prairie-expedition-elm): Prairie Expedition Elm (Ulmus americana 'Lewis & Clark') - a North Dakota-bred American elm cultivar with high Dutch Elm Disease resistance and exceptional cold-hardiness.
- ['Princeton' Elm](https://www.dutchelmdisease.org/princeton-elm): 'Princeton' elm (Ulmus americana 'Princeton') - a 1922 American elm cultivar with subsequently identified Dutch Elm Disease resistance, used in National Mall restoration.
- [Triumph™ Elm](https://www.dutchelmdisease.org/triumph-elm): Triumph Elm (Ulmus 'Morton Glossy') - a Morton Arboretum complex hybrid with high Dutch Elm Disease resistance, glossy foliage, and upright oval form.
- ['Valley Forge' Elm](https://www.dutchelmdisease.org/valley-forge-elm): 'Valley Forge' elm (Ulmus americana 'Valley Forge') - a 1995 USDA National Arboretum release with exceptional Dutch Elm Disease resistance and classic American vase form.
- [American Elm (Ulmus americana)](https://www.dutchelmdisease.org/american-elm): Complete profile of the American elm - identification, range, historical significance, Dutch Elm Disease impact, and resistant cultivars.
- [Bacterial Leaf Scorch vs Dutch Elm Disease](https://www.dutchelmdisease.org/bacterial-leaf-scorch-vs-dutch-elm-disease): Distinguish bacterial leaf scorch from Dutch Elm Disease - leaf-margin browning with halo, slow chronic decline, and oxytetracycline vs fungicide treatment.
- [Chinese Elm (Ulmus parvifolia)](https://www.dutchelmdisease.org/chinese-elm): Profile of Chinese elm (lacebark elm) - mottled bark, late-season flowering, high DED resistance, common cultivars, and how to distinguish from Siberian elm.
- [Is My Elm Dying? A Differential Diagnosis Guide](https://www.dutchelmdisease.org/differential-diagnosis): Distinguish Dutch Elm Disease from lookalike conditions - elm yellows, Verticillium wilt, bacterial leaf scorch, anthracnose, drought, and herbicide injury.
- [Dutch Elm Disease Biology, Causes & Spread](https://www.dutchelmdisease.org/disease-biology): Understand the biology of Dutch Elm Disease - the Ophiostoma fungi, elm bark beetle vectors, root graft transmission, and how the pathogen kills elm trees.
- [Drought Stress vs Dutch Elm Disease](https://www.dutchelmdisease.org/drought-stress-vs-dutch-elm-disease): Distinguish drought-stressed elms from Dutch Elm Disease - whole-tree symptoms vs flagging, the watering test, and how drought predisposes elms to true DED.
- [Elm Anthracnose vs Dutch Elm Disease](https://www.dutchelmdisease.org/elm-anthracnose-vs-dutch-elm-disease): Tell elm anthracnose apart from Dutch Elm Disease - leaf spots and blotches vs vascular streaking, plus why anthracnose rarely kills the tree.
- [Elm Species - A Complete Guide](https://www.dutchelmdisease.org/elm-species): Comprehensive guide to the elm genus (Ulmus) - North American, European, and Asian species, their identification, range, and Dutch Elm Disease susceptibility.
- [Dutch Elm Disease Symptom Checker](https://www.dutchelmdisease.org/elm-symptom-checker): Decision-tree symptom checker for elm tree problems - work through bark, smell, leaf, and canopy-pattern checks to narrow down whether your elm has DED or a lookalike.
- [Elm Yellows vs Dutch Elm Disease](https://www.dutchelmdisease.org/elm-yellows-vs-dutch-elm-disease): Distinguish elm yellows (phloem necrosis) from Dutch Elm Disease - the wintergreen-smell test, vector differences, and why fungicide treatment fails for elm yellows.
- [English Elm (Ulmus minor / Ulmus procera)](https://www.dutchelmdisease.org/english-elm): Profile of the English elm - identification, the British countryside before DED, the loss of 25 million elms, and the surviving Brighton and Edinburgh populations.
- [Herbicide Injury vs Dutch Elm Disease](https://www.dutchelmdisease.org/herbicide-injury-vs-dutch-elm-disease): Distinguish herbicide injury from Dutch Elm Disease - twisted and cupped leaves, drift patterns, and why fungicide treatment is the wrong response.
- [How to Identify an Elm Tree](https://www.dutchelmdisease.org/how-to-identify-an-elm-tree): Field guide to identifying elm trees - asymmetric leaf bases, doubly serrated margins, papery samaras, zigzag twigs, and bark patterns by species.
- [Dutch Elm Disease Research & Future](https://www.dutchelmdisease.org/research-future): Current Dutch Elm Disease research - resistance breeding, biological control, gene editing, AI applications, and the long-term outlook for elm species recovery.
- [Disease-Resistant Elm Varieties Guide](https://www.dutchelmdisease.org/resistant-elm-varieties): Selecting a Dutch Elm Disease-resistant elm cultivar - American hybrids, Asian species, and European selections compared side by side.
- [Dutch Elm Disease Safety & Practical Guide](https://www.dutchelmdisease.org/safety-practical-guide): Practical safety information for Dutch Elm Disease - human and pet safety, tree-failure hazards, burning infected wood, and disposal of infected trees.
- [Siberian Elm (Ulmus pumila)](https://www.dutchelmdisease.org/siberian-elm): Profile of Siberian elm - the controversial shelterbelt tree, why it's invasive, the persistent Chinese elm mislabeling problem, and DED resistance notes.
- [Slippery Elm (Ulmus rubra)](https://www.dutchelmdisease.org/slippery-elm): Profile of the slippery elm (red elm) - identification, the famous medicinal inner bark, range, DED susceptibility, and hybridization with Siberian elm.
- [Dutch Elm Disease Treatment & Management Guide](https://www.dutchelmdisease.org/treatment-management): Complete guide to treating and managing Dutch Elm Disease - fungicide injection, sanitation, prevention, and decision frameworks for arborists and homeowners.
- [Verticillium Wilt vs Dutch Elm Disease](https://www.dutchelmdisease.org/verticillium-wilt-vs-dutch-elm-disease): Tell Verticillium wilt apart from Dutch Elm Disease - olive-green vs chocolate-brown vascular streaks, broad vs elm-only host range, and treatment differences.
- [Wych Elm (Ulmus glabra)](https://www.dutchelmdisease.org/wych-elm): Profile of the wych elm - the only elm truly native to the British Isles, identification, range, DED susceptibility, and the famous Camperdown elm cultivar.
- [About This Reference](https://www.dutchelmdisease.org/about): About the Dutch Elm Disease Information Center — editorial standards, content scope, and the focus on evidence-based information for tree owners, arborists, and researchers.
- [Are There Trees Resistant To Dutch Elm Disease?](https://www.dutchelmdisease.org/are-there-trees-resistant-to-dutch-elm-disease): Dutch Elm Disease-resistant elm varieties, including American Liberty, Valley Forge, and Asian species that can replace susceptible elms.
- [Can Artificial Intelligence Help Cure Dutch Elm Disease?](https://www.dutchelmdisease.org/can-artificial-intelligence-help-cure-dutch-elm-disease): Exploring how artificial intelligence and machine learning technologies could contribute to finding treatments and cures for Dutch Elm Disease.
- [Can Dutch Elm Disease Be Cured?](https://www.dutchelmdisease.org/can-dutch-elm-disease-be-cured): Currently, there is no cure for Dutch Elm Disease. Learn about treatment options, management strategies, and ongoing research toward finding cures.
- [Can Dutch Elm Disease Be Treated?](https://www.dutchelmdisease.org/can-dutch-elm-disease-be-treated): Learn about Dutch Elm Disease treatment options including fungicide injections, pruning, and prevention strategies for managing infected trees.
- [Can Firewood Spread Dutch Elm Disease?](https://www.dutchelmdisease.org/can-firewood-spread-dutch-elm-disease): Yes, elm firewood can spread Dutch Elm Disease through beetle vectors and fungal spores. Learn quarantine rules, safe handling, and disposal practices.
- [Can You Burn Wood With Dutch Elm Disease?](https://www.dutchelmdisease.org/can-you-burn-wood-with-dutch-elm-disease): Wood from Dutch Elm Disease-infected trees can be safely burned. Recommended practices, timing, and quarantine considerations for safe disposal of infected elm wood.
- [How Does Dutch Elm Disease Look Like?](https://www.dutchelmdisease.org/how-does-dutch-elm-disease-look-like): Recognize Dutch Elm Disease visual symptoms - yellowing leaves, wilting branches, brown streaking in wood, and progressive tree decline patterns.
- [How Does Dutch Elm Disease Spread in a Tree?](https://www.dutchelmdisease.org/how-does-dutch-elm-disease-spread-in-a-tree): Learn how Dutch Elm Disease spreads through tree vascular systems, blocking water transport and causing progressive branch death and tree decline.
- [Is Dutch Elm Disease Harmful to Humans?](https://www.dutchelmdisease.org/is-dutch-elm-disease-harmful-to-humans): No, Dutch Elm Disease is not harmful to humans. Learn about human safety, tree disposal precautions, and why this plant disease poses no health risks.
- [What are Dutch Elm trees?](https://www.dutchelmdisease.org/what-are-dutch-elm-trees): Learn about elm trees (Ulmus species) - their characteristics, varieties, historical importance as street trees, and susceptibility to Dutch Elm Disease.
- [What Are Sac Fungi?](https://www.dutchelmdisease.org/what-are-sac-fungi): Sac fungi (Ascomycetes) include Ophiostoma, the pathogens that cause Dutch Elm Disease. Learn their biology, lifecycle, and why they devastate elm trees.
- [What Can I Do to Prevent the Spread of Dutch Elm Disease?](https://www.dutchelmdisease.org/what-can-i-do-to-prevent-the-spread-of-dutch-elm-disease): Practical steps homeowners, communities, and land managers can take to prevent the spread of Dutch Elm Disease and protect elm trees.
- [What Causes Dutch Elm Disease?](https://www.dutchelmdisease.org/what-causes-dutch-elm-disease): Discover what causes Dutch Elm Disease - pathogenic Ophiostoma fungi spread by elm bark beetles and root grafts between trees.
- [What Cultivars Are Resistant to Dutch Elm Disease?](https://www.dutchelmdisease.org/what-cultivars-are-resistant-to-dutch-elm-disease): Discover specific Dutch Elm Disease-resistant elm cultivars including American Liberty, Valley Forge, Princeton, and New Harmony varieties.
- [What Is The Range of Dutch Elm Disease?](https://www.dutchelmdisease.org/what-is-the-range-of-dutch-elm-disease): Learn about the global geographic range of Dutch Elm Disease across North America, Europe, and other affected regions worldwide.
- [What Preventative Treatments Exist for Dutch Elm Disease?](https://www.dutchelmdisease.org/what-preventative-treatments-exist-for-dutch-elm-disease): Learn about Dutch Elm Disease prevention methods including fungicide injections, beetle control, proper pruning, and sanitation practices.
- [Where Did Dutch Elm Disease Come From?](https://www.dutchelmdisease.org/where-did-dutch-elm-disease-come-from): The origins of Dutch Elm Disease - from its evolutionary home in Asia to its scientific description in Europe and its 1930 introduction to North America.
- [Which Universities and Researchers Are Studying Dutch Elm Disease?](https://www.dutchelmdisease.org/which-universities-and-researchers-are-studying-dutch-elm-disease): A comprehensive guide to universities, research institutions, and scientists actively studying Dutch Elm Disease, their research focus areas, and key contributions to the field.
- [Who Should I Contact if I See Dutch Elm Disease?](https://www.dutchelmdisease.org/who-should-i-contact-if-i-see-dutch-elm-disease): Know who to contact for Dutch Elm Disease reporting - certified arborists, local forestry departments, agricultural extensions, and plant diagnostic labs.
- [Will Dutch Elm Disease Make Elms Extinct?](https://www.dutchelmdisease.org/will-dutch-elm-disease-make-elms-extinct): No, Dutch Elm Disease will not make elms extinct. Natural resistance, breeding programs, and conservation efforts are securing the future of elm species.
- [What Are the Symptoms of Dutch Elm Disease?](https://www.dutchelmdisease.org/what-are-the-symptoms-of-dutch-elm-disease): Identify Dutch Elm Disease symptoms including yellowing leaves, wilting, branch dieback, and vascular discoloration. Learn acute vs chronic forms.
- [What is Dutch Elm Disease?](https://www.dutchelmdisease.org/what-is-dutch-elm-disease): Dutch Elm Disease (DED) is a destructive fungal disease affecting elm trees worldwide. Overview of its causes, origins, impact, and timeline.
- [Dutch Elm Disease Identification Guide](https://www.dutchelmdisease.org/disease-identification): Complete guide to identifying Dutch Elm Disease - learn symptoms, visual signs, diagnostic methods, and when to seek professional help for accurate diagnosis.
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