Assertion: elm's cultivar | /r/HasProperty | excellent ded tolerance
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text: Several cultivars of American Elm, 'Valley Forge' (zone 5-8, excellent DED tolerance - may be the most tolerant of the lot), 'New Harmony' (zone 4-8, excellent tolerance to DED-second to 'Valley Forge', fat vase-more rounded than 'Valley Forge'), 'Princeton' (fast grower, resists elm leaf beetle, third in tolerance close behind 'New Harmony'), and 'Washington' and Delaware #2 (intermediate tolerance to DED), and `American Liberty' (very susceptible to elm yellows, less DED tolerant than others) are now becoming available.