american hybrid elm

Although the tree has not borne any viable seed, it does produce apparently fertile pollen. Healthy American elm along Main Street in West Concord, MA in 2002 (Photograph by Todd Carley.See a closer view of the limbs.). ... 'Homestead' - multispecies hybrid, vase shapes, hardy only to zone 5. Foliage:  Small and narrow glossy green leaves, emerging with a red tinge. Large leaves are dark green with rusty red tints in the fall. The good news is that resistant tree strains are starting to improve the American elm's situation. Hardy to zone 4. It is a tree mostly found in wetlands or other moist sites. Adapt easily to extremes in soil pH, moisture and heat and wind. ‘Frontier’ grows with a somewhat strong central leader and upright growth. ‘Accolade’ should become more widely available quickly due to it’s excellent characteristics. Light Needs. Accessions North America. Two promising American elm cultivars, ‘Valley Forge’ and ‘New Harmony,’ are showing good Dutch elm disease resistance. ’Frontier’ is an excellent urban tree. Hardy and tolerant of urban conditions, it was planted by millions across North America and the “tree-lined street” many of us have in our imagination are of those endless rows of American elms. mandshurica), Arboretum Records Honor, Milestone; Looks to Future, Family Ulmaceae – Zelkovas, Hackberries and Elms. American Elm Tree. In the United States, too many people planted just the American elm (Ulmus americana) instead of planting a variety of elm species. The wood of American Elm is very hard and was a valuable timber tree used for lumber, furniture and veneer. 362–63, no provenance data available. Elms prefer full sun or partial shade and moist, well-drained fertile soil. This hybrid exhibits a high resistance to Dutch Elm disease and a moderate resistance to the elm leaf beetle. Ulmus Japonica x Wilsoniana ‘Morton’ Accolade Hybrid Elm. Ulmus pumila x Ulmas japonica ‘Sapporo Autumn Gold’. The small stature lends itself well to smaller properties, under power lines and as a street tree. Most American Elms live up to 300 years, so you'll be planting a tree that will live in your families' yard for longer than your great-grandkids will be around. Young trees exhibit a conical form, potentially developing a somewhat vase shaped crown as it matures. Updated checklist of elm (Ulmus) cultivars for use in North America. Ulmus japonica x Ulmus pumila ‘New Horizon’. Single trunked, upright-pyramidal tree with proven superior resistance to Dutch elm disease. The American elm was one of the many long-standing elms in the U.S. to succumb to Dutch elm disease. Cultivation. The habitat of the American elm stretches from Florida to Newfoundland west to North Dakota and Texas. Dover Publications. It transplants easily and grows well in a wide range of climates form the east to west coast and Ohio to Oklahoma, being very tolerant of urban conditions. Growth habit is broad with a classic vase shape. Custom Search Triumph Elm, on left, with one if its famous parents, an Accolade Elm (Thornhill Education Center.) It reaches 40’ high with a spread of 25’ with an upright growing habit. no. Light Needs. Unusual foliage emerges reddish in spring, turning green in summer, then turns a lovely purple red in fall. Elms are loved for their graceful, stately shape, with branches like spreading fountains, and their green leaves that turn gold in fall. The leaves are a dark glossy green through the growing season, turning a pleasant golden yellow in fall. Hybrid Asian elms Hybrid Asian elms are the result of controlled breeding programs throughout North America. ‘Accolade’ is vigorous and also possesses the tough urban tolerance of the American Elm, with the exception of only moderate tolerance to clay and compacted soil. Yarrow, G.K., and D.T. When young, this tree produces vigorous side shoots that need to be kept pruned off. The state tree of both Massachusetts and North Dakota, American elm is a beautiful tree but subject to getting a serious disease called Dutch elm disease or DED. 'Kansas Hybrid' had not (by 1995) been widely tested for resistance to Dutch elm disease. Other research efforts focus on developing hybrid elm trees to replace the American elm by breeding crosses of European and Asian elms. American elm – seedling origin; Greg Morgenson, NDSU. Other species displaying the classic vase shape of  the American Elm have been cultivated in recent years. It reaches 55’ high with a spread of 35’ wide and is hardy to zone 5.

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