Tree Sorbus intermedia [Mountainash] Structural pruning is important for this species, as it has weak crotch angles. Prune so that the trunk and branches cannot rub against each other. This tree does not tolerate competition well and should be mulched to the dripline.
Tree Styphnolobium japonicum [Japanese Pagodatree] A widely adapted tree with good drought and pollution tolerance, and foliage texture comparable to Gleditsia, but a smaller tree and with more seasonal interest. Relatively trouble-free except for fungi that live in weaker twigs that cause twig blight and canker. Fungi invade most readily those twigs killed by cold or self-pruning. Seeds are poisonous. Difficult to train a central leader. More cold sensitive when young.
Shrub Syringa meyeri 'Palibin' [Dwarf Meyer Lilac] Flowers by the time it reaches one foot tall, very floriferous. Flowers in spring before leaves are fully out. Powdery mildew resistant. Very low maintenance. Flowers can be damaged by a late spring freeze. Best to prune immediately after flowering to promote flower buds for the next year.
Tree Taxodium distichum var. imbricarium [Pondcypress] Can tolerate wet and dry soils. Does not tend to develop "cypress knees" like the Common Baldcypress.
Shrub/Tree Taxus cuspidata 'Capitata' [Capitata Japanese Yew] 'Capitata' is a very functional and durable pyramidal yew. Can get up to 40-50' tall, but can be pruned to maintain a smaller size. Dioecious. Tolerates shade and heavy pruning. Bark peels on older specimens. All parts of Taxus, except the fleshy, red aril are poisonous. Can be siginificantly damaged by deer.
Tree Tilia americana 'Redmond' [Redmond American Linden] Very adaptable, even in alkaline soil, but does not tolerate much air pollution. Too big for most urban landscapes. Japanese beetles like feeding on it.
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 '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.
