Ulmus americana cultivars fact sheet
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along the southern boundary was a part of the great hardwood forest of the Ohio Basin with woods varying with soil and drainage: on the drier gravel lands were oak forests consisting of red, black and white oak, hickory, ash, cherry, basswood and walnut; in depressions there were maple, elm, ash, beech, sycamore, poplar and willow; and in the sontheast there were a few chestnuts and tulip trees. American Elm (Ulmus americana) General Description The state tree of North Dakota. A large vase-shaped tree adapted to a wide variety of sites. No longer recom-mended because of its susceptibility to Dutch Elm Disease. The largest tree in North Dakota is 62 feet tall with a canopy spread of 74 feet. Leaves and Buds Bud Arrangement - Alternate.
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Although no longer common in eastern North America, there are several hundred American elms in Corvallis, most on the Oregon State campus. Newer selections of Ulmus americana show good to excellent resistance to Dutch elm disease and are recommended for planting. These include the following: 'Jefferson', 'New Harmony', Prairie Expedition ... Cultivars: A variety of Dutch elm disease-resistant cultivars are now available in the nursery market. These include selections of American elm (Ulmus americana) that have been identified as Dutch elm disease-tolerant through intensive, long-term screening programs. ‘Valley Forge’ – green summer foliage, changing to yellow in fall. The so-called American Elm cultivar Ulmus americana 'Variegata' was a Belgian clone mentioned by Wesmael in Bulletin de la Fédération des sociétés d'horticulture de Belgique, 1862, as Ulmus americana var. variegata Hort. It was marketed by the Baudriller nursery of Angers as U. americana foliis variegatis. Some excellent cultivars to consider are: 'Chancellor®' Fact Sheet and 'Shamrock®' Fact Sheet Ulmus parvifolia Lacebark Elm – is tolerant of drought, hot sites, compacted urban soil, salt spray on the tree surface, diseases, and soil with a high pH. It transplants easily bare root or B&B and is suitable for CU-Structural Soil™ installation. Cultivars may help to reestablish plants like the American Elm (Ulmus americana), pictured left, or American Chestnut (Castanea dentata), pictured right, that were nearly wiped out by Dutch Elm Disease and Chestnut Blight. American elm, also referred to as white elm, is a tall tree (up to 80 feet). When growing in the open, the trunk divides near the base into several large limbs which arch outward, resulting in an attractive, vase-shaped silhouette. American elm occurs on moist upland sites and bottomlands. The development of cultivars resistant to Dutch elm disease makes planting American elm appealing again. Two such cultivars are Ulmus americana "Princeton," which is hardy in USDA zones 3 to 9 and grows up to 70 feet, or Ulmus americana "Valley Forge," hardy in USDA zones 5 to 9.
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American elm, also referred to as white elm, is a tall tree (up to 80 feet). When growing in the open, the trunk divides near the base into several large limbs which arch outward, resulting in an attractive, vase-shaped silhouette. American elm occurs on moist upland sites and bottomlands. Fact Sheet ST-649 October 1994 Ulmus americana Figure 1. Middle-aged American Elm. American Elm1 Edward F. Gilman and Dennis G. Watson2 INTRODUCTION This native North American tree grows quickly when young, forming a broad or upright, vase-shaped silhouette, 80 to 100 feet high and 60 to 120 feet wide (Fig. 1). Trunks on older trees could reach ... Ulmus americana, generally known as the American elm or, less commonly, as the white elm or water elm, is a species native to eastern North America, naturally occurring from Nova Scotia west to Alberta and Montana, and south to Florida and central Texas. 'Liberty' (also known as 'American Liberty') - Though widely promoted, this reportedly DED-resistant selection is problematic since the "cultivar" is actually comprised of more than one clone. In addition, the disease resistance of this plant has not proven to be as strong as other forms, and observations have revealed high rates of "elm ...
use of Ulmus americana will be limited because of the tree’s susceptibility to disease. At present, mod-ern science has no easy, effective, or reliable cure for Dutch elm disease or phloem necrosis, the two major afflictions of American elm. Therefore, we are suggesting the following tree species as alter-nate plantings to the American elm. Valley Forge American elm is a large-maturing shade tree with a dense canopy of dark green leaves and the graceful arching habit and adaptability that formerly made this species among the most popular and beloved street trees. This deciduous tree typically grows to 60–80 feet tall with a broad-rounded crown. It is native to eastern and ... Ulmus americana ‘Jefferson’ The ‘Jefferson’ elm is a newer introduction, 2005, which is not yet available to the public but may be by 2009 or 2010. ‘Jefferson’ grows in the classic American elm vase shape reaching nearly 70’ tall.
The American elm (Ulmus americana), also commonly known as white elm, water elm or common elm, is a large deciduous tree grown across U.S. Department of Agriculture plant hardiness zones 2 through 9. The varieties, "Valley Forge" and "New Harmony", each introduced around 1996, are purely American elms (Ulmus americana) from the northern United States which are moderately easy for the amateur gardener to cultivate and to propagate vegetatively. "Valley Forge" appears to be the most DED-tolerant of all American elm varieties that have been ... FACT SHEET Agriculture and Natural Resources HYG-3308-08 Dutch Elm Disease Chris Wallis Dennis J. Lewandowski Pierluigi (Enrico) Bonello Department of Plant Pathology D utch elm disease (DED) is one of the most destruc-tive urban forest diseases. This disease affects na-tive American elm species, such as American (Ulmus Northeastern Area Office Office of the Director 11 Campus Boulevard, Suite 200 Newtown Square, PA 19073 Ulmaceae -- Elm family Calvin F. Bey American elm (Ulmus americana), also known as white elm, water elm, soft elm, or Florida elm, is most notable for its susceptibility to the wilt fungus, Ceratocystis ulmi. Millions of these trees were lost to Dutch Elm Disease. There are now disease resistant varieties being introduced to the market, but we recommend exercising caution when planting these and not to over-plant. The new varieties have been found to grow very fast and need a considerable amount of care and pruning when young.