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The Magdalen Elm, a great elm in the Grove of Magdalen College, Oxford, [73] photographed by Henry Taunt in 1900 [74] and said by Elwes to be the largest elm in Great Britain, was long believed to be wych but was found on examination by Elwes and Henry to be a Huntingdon-type hybrid that at c.300 years old pre-dated the cultivation of ...
Ulmus americana, generally known as the American elm or, less commonly, as the white elm or water elm, [a] is a species of elm native to eastern North America. The trees can live for several hundred years. It is a very hardy species that can withstand low winter temperatures, but it is affected by Dutch elm disease.
Promoted exclusively by the Elm Research Institute (ERI) since 1983, these trees have been planted across the United States in numbers the organization claims to be in excess of 250,000. The American Liberty elm is reputedly "extremely expensive" to buy, particularly in the larger sizes. [7]
The American Elm cultivar Ulmus americana 'Valley Forge' was raised by the Agricultural Research Service in Maryland.The tree was released to wholesale nurseries without patent restrictions by the U. S. National Arboretum in 1995 after proving to have a high resistance to Dutch elm disease.
Testing in laboratory conditions by the United States Department of Agriculture from 1992 to 1993 revealed that 'Princeton' had some resistance to Dutch elm disease (DED), [6] [7] [8] although the original Princeton elm, which grew in Princeton Cemetery and was estimated to be over 150 years old, was felled in April 2005 after suffering 60 percent dieback, attributed by some accounts to Dutch ...
Sacramento is the “City of Trees” — filled with an array of species, including oak, elm, sycamore and redwoods. The city protects its trees, including some on private land .
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