Acer rubrum October Glory. One of the best red maples in production. Develops excellent fall color on many sites and retains leaves long into fall.

Acer saccharum Green Mountain. A vigorous, uniform grower with an upright oval crown of dark-green foliage that turns orange and scarlet shades in the fall. Thick, waxy leaves resist summer scorching.

Gleditsia triacanthos inermis Shademaster. Upright, thornless honeylocust. Strong grower with a straight trunk and graceful ascending branches, very deep-rooted.

Ginkgo biloba Princeton Sentry. 60- 70-foot upright grower. Grafted, male selection.

Hydrangea quercifolia 'Snow Queen.' Pure-white flowers in early July, gradually turning pink in August. Flower panicles held erect on stiff stems; leaves turn deep red-bronze in fall. Winner of the Pennsylvania Horticultural Society Gold Medal.

Prunus subhirtella 'Rosy Cloud.' Hardy cherry selected for its profuse, bright-pink double flowers and long blooming period.

Malus hupehensis 'Cardinal.' Crabapple selected for its glossy red, disease-resistant foliage and bright-red flowers.

Tilia cordata Greenspire. Littleleaf European linden with small, leathery foliage and perfectly straight trunk. Grows into a regular narrow, oval form. Branches are placed radially around the trunk; rapid grower.