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 ‘Sterling’ [Sterling Linden] Tilia tomentosa 'Sterling' shows some resistance to Japanese beetle.
Tree Ulmus americana 'New Harmony' [New Harmony Elm] 'New Harmony' is a cultivar of American elm, it has a vigerous growth rate and a more narrow vase shape than other varieties. It has great disease tolerance of Dutch Elm Disease (DED).
Tree Ulmus americana 'Princeton' [Princeton American Elm] This American Elm cultivar retains the attractive vase-shaped form that the American Elm is known for and has some resistance to both the elm leaf beetle and Dutch Elm Disease, which is caused by Ophiostoma ulmi. (Dutch Elm Disease has lead to the near extinction of the American Elm in the US). Many other diseases can cause damage to this cultivar, though.
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 davidiana var. japonica 'Prospector' [Prospector Elm] 'Prospector' is a cultivar with an excellent resistance to Dutch elm disease (DED) and smaller than american varieties. It is fast growing and requires maintainance to keep its vase shape, but works well as a street tree. It has showy emerging leaves and a brilliant yellow fall color.
Tree Ulmus × 'Frontier' [Frontier Elm] Small tree that grows well under city conditions. Good Dutch elm disease resistance and moderate elm leaf beetle resistance.
