Tree Tilia cordata 'Greenspire' [sold as Greenspire®] [Greenspire Littleleaf Linden] Pollution tolerant and adaptable to city conditions. A great choice as a street or shade tree with its dense form and strong central leader. Can have issues with Japanese beetles in mid-summer.
Tree Tilia cordata 'Olympic' [Olympic Littleleaf Linden] 'Olympic' is a vigorous cultivar that has a symmetrical canopy and excellent branching. Never colorful but a good shade tree that is well-adapted to most city conditions and relatively troublefree. Functions as a small tree for many years. Japanese beetles can feed heavily on foliage beginning in mid-summer.
Tree Tilia × euchlora [Crimean Linden] The Crimean Linden is similar to the Littleleaf Linden, but with a more informal habit and slightly more pendulous branches with maturity. Often sold in grafted form, and these trees can have trouble with suckers from the rootstock. Never colorful, but a good shade tree that is well-adapted to most city conditions and relatively troublefree. Functions as a small tree for many years. Reportedly more resistant to aphids than other Tilia. Japanese beetles can feed…
Tree Tilia tomentosa [Silver Linden] Very adaptable, even alkaline soil, but it doesn't tolerate much air pollution. More heat and drought tolerant than other lindens. Japanese beetles are attracted to the foliage. Attractive light-gray, smooth bark approaches beech like in appearance.
Tree Ulmus americana 'Valley Forge' [Valley Forge American Elm] This cultivar has the classic vase-like form and ascending branches that the American elm is know for, while also having the best Dutch elm disease resistance of the new "Dutch elm resistant" cultivars. Important to stake when young.
Tree Ulmus davidiana var Japonica 'Morton' [sold as Accolade®] [Accolade Elm] Very good resistance to the Dutch elm disease pathogen, Ophiostoma ulmi, which has led to the near extinction of the American Elm (Ulmus americana) in the U.S. Also has good resistance against phloem necrosis, elm leaf beetle, and leaf miner.
Tree Ulmus × hollandica 'Groeneveld' [Groeneveld Dutch Elm] Dense, regular branching. Resistant to Dutch Elm Disease. Wind tolerant.
Tree Ulmus × hollandica 'Pioneer' [Pioneer Dutch Elm] Resistant to Dutch elm disease and phloem necrosis, but susceptible to the elm leaf beetle.
Tree Ulmus × 'Homestead' [Homestead Elm] Dutch elm and phloem necrosis resistant, but susceptible to the elm leaf beetle. 'Homestead' was formed from a cross between Ulmus minor, U. x hollandica, and U. pumila.
Tree Ulmus minor [Smoothleaf Elm] Moderate resistance to the Dutch elm disease pathogen, Ophiostoma ulmi, which has led to the near extinction of the American Elm (Ulmus americana) in the U.S.
