American Elm Cultivars P O Box 189 | Boring OR 97009 | 800-825-8202 | www.jfschmidt.com Ulmus americana ‘Jefferson’ Deep green foliage and an upright vase shape characterize this Jefferson Elm National Arboretum – National Zone: 4 | Height: 70' | Spread: 50' Park Service joint introduction. Shape: Vase shaped with arching Tested and shown to be Dutch limbs Elm Disease tolerant, the impres- Foliage: Dark green sive original tree grows on the Fall Color: Yellow National Mall in Washington, DC. DISEASE TOLERANCE: Dutch Elm Disease Ulmus americana ‘New Harmony’ Introduced by the U.S. National Arboretum, this tree features New Harmony Elm the classic vase shape of the Zone: 4b | Height: 70' | Spread: 65' American elm along with a Shape: Vase shaped with arching high level of disease tolerance. limbs Vigorous growing and slightly Foliage: Medium green narrower than Valley Forge. Fall Color: Yellow DISEASE TOLERANCE: Dutch Elm Disease Ulmus americana ‘Lewis & Clark’ Extremely cold hardy, this Plains- tough American native descends Prairie Expedition® Elm from a lone survivor of Dutch Elm Zone: 2b | Height: 55' | Spread: 60' Disease found near Fargo, ND. Shape: Broad, rounded to spreading Fast growth of the broad spread- vase ing, vase shaped canopy delivers Foliage: Dark green quick shade in cold prairies and Fall Color: Yellow harsh urban environments. DISEASE TOLERANCE: Dutch Elm Disease Ulmus americana ‘Princeton’ Originally selected in 1922 by William Flemer for its dense Princeton Elm symmetrical upright form and dark Zone: 4 | Height: 65' | Spread: 50' green foliage, it has since proven Shape: Upright vase shaped to be one of the best American Foliage: Dark green Elms for resisting the attack of Fall Color: Yellow Dutch Elm Disease. DISEASE TOLERANCE: Dutch Elm Disease Ulmus americana ‘Valley Forge’ This National Arboretum introduc- tion has tested best for Dutch Elm Valley Forge Elm Disease tolerance, bringing hope Zone: 4 | Height: 70' | Spread: 70' for the return of the American elm. Shape: Broad vase shaped with Fast growing but a little wild in the arching limbs nursery, it matures to form a stately Foliage: Medium green vase shaped crown. Fall Color: Yellow DISEASE TOLERANCE: Dutch Elm Disease.