Disease resistant, genetically engineered trees | Facility Executive - Creating Intelligent Buildings

The Elm Research Institute, established in 1964, has spent more than two decades developing the first disease resistant American elm, the Liberty Elm, which was introduced in 1985. American Liberty Elms are selected from premium cultivar stock, cloned, field-tested and come with the only Lifetime Warranty against Dutch elm disease. Consider these points when making […]


https://facilityexecutive.com/2006/06/disease-resistant-genetically-engineered-trees/
The Elm Research Institute, established in 1964, has spent more than two decades developing the first disease resistant American elm, the Liberty Elm, which was introduced in 1985. American Liberty Elms are selected from premium cultivar stock, cloned, field-tested and come with the only Lifetime Warranty against Dutch elm disease. Consider these points when making […]
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Disease resistant, genetically engineered trees

Disease resistant, genetically engineered trees | Facility Executive - Creating Intelligent Buildings


The Elm Research Institute, established in 1964, has spent more than two decades developing the first disease resistant American elm, the Liberty Elm, which was introduced in 1985. American Liberty Elms are selected from premium cultivar stock, cloned, field-tested and come with the only Lifetime Warranty against Dutch elm disease.

Consider these points when making landscaping decisions:
o Field tested, 250,000+ trees planted in over 1,000 communities nationwide
o Dutch elm disease resistant, less than 1% losses over past 20 years
o LIFETIME WARRANTY against loss to Dutch elm disease
o Every tree carries a registration number and is tracked for life to confirm resistance
o Cloning by leaf propagation insures resistance from generation to generation
o Container grown to 10-25 ft. (2 – 4″ caliper)
o Provides diversity, series from (6) clones from highly resistant Ulmus americana stock
o Hardy, highly tolerant of urban conditions and drought
o Adaptable to a wide variety of soil conditions
o Tolerant to varying light locations… best in full sun
o Thrives in horticultural zones 2 – 9 (-40O to 105OF)
o Rises above power lines, minimal pruning as mature tree… at maturity, 100 to 120 ft. tall
o Canopy spread, 65 ft. provides filtered light
o Long-lived, 200 to 300 years

Liberty Elms are available through the ERI Tree Grant Program to landscape professionals, architects, engineers, and groundskeepers, for planting in public places. For more information, call 800-367-3567 or visit the Web

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2 COMMENTS

  1. I found a table of elm cultivars maitained by the University of Minnesota (http://www.extension.umn.edu/yardandgarden/ygbriefs/p425dutchelm-resistant.html). These are the different elms with resistance to Dutch Elm Disease (DED), as well as other diseases and pests. The Park Royal cultivar from the Siberian Elm — Ulmus pumila variety was introduced into Ontario, Canada. Sheridan Nursery raised this particular variety and was first listed in their 1969 Trade List. Since then, it is no longer grown by them. You may want to contact the Sheridan Nursery – http://www.sheridannurseries.com/GardenSite/sectionproductsandservicesFRAMESET.htm – and see what treest they would recommend for your area. From What I can tell from the Canada National Land & Water services, Ottawa is Zone 5A of the 2000 Plant Hardiness Zone.

  2. Hello Heidi,

    I’m interested in planting disease-resistant
    elms on my property in mid-northern
    Ontario. I have 28 acres. What can you
    advise?
    Thanks,
    Ed Willms
    705 789 1218

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