Shrub Pinus mugo 'Valley Cushion' [Dwarf Mugo Pine] 'Valley Cushion' is a very slow-growing (approximately 1.5" a year) dwarf cultivar that is excellent for rock gardens and bonsai. Can be disfigured by scale insects.
Shrub Pinus nigra 'Hornibrookiana' [Dwarf Austrian Pine] 'Hornbrookiana' is a compact and mounded dwarf cultivar. Tolerates city conditions. Tolerates clay, dry, and alkaline soils, and heat. May be badly damaged by sapsuckers. Sphaeropsis tip blight is a more serious problem. Pine foliar nematode (transmitted by a beetle) can also be problematic.
Tree Platanus × acerifolia [London Planetree] Platanus x acerifolia is quite similar to P. occidentalis, but was originally advertised as being much more pest resistant. P. x acerifolia was quickly overplanted, and it is clear that pest resistance varies among hybrids, and can be quite poor. Pests that can severely affect this species include sycamore anthracnose, cankerstain, Botryosphaeria canker, leaf spot, powdery mildew, sycamore lace bug, and American plum borer. One of the largest of shade trees, making massive, majestic specimens.…
Tree Platanus × acerifolia 'Morton Circle' [sold as EXCLAMATION!™] [Exclamation London Planetree] 'Morton Circle' is a cultivar with exfoliating tan bark exposing white underneath. It has large palmately lobed leaves, and is monoecious with different fruit size and color.
Tree Indiana Native Platanus occidentalis [American Sycamore] One of the largest of shade trees, making massive, majestic specimens. Tolerant of urban conditions, but generally found in riparian areas in the wild. The mottled, multi-colored, exfoliating bark is very beautiful and makes for excellent winter interest. Needs a large volume of soil space. Anthracnose leaf and twig blight occasionally disfigure this tree, and can damage it severely. Leaves, twigs, bark, and fruit contribute to a significant litter problem. Although this species can tolerate…
Tree Indiana Native Populus balsamifera [Balsam Poplar] Buds exude a resin (the source of "balm of Gilead") that is traditionally used as an ointment to relieve chest congestion. The resin is also flammable, so twigs are used for starting fires. The streaked brown and grey wood is used in carving and woodworking. Trees are found along forest edges, forests, meadows and fields, and shores of rivers or lakes.
Tree Indiana Native Populus deltoides [Eastern Cottonwood] Populus deltoides is a large, fast-growing tree that is not generally advised for use in the landscape. This plant is weak-wooded, weedy, and a litter problem, dropping twigs, flowers, branches, leaves, and fruits (the cottony masses that float through the air in early summer). In the wild, it tends to grow along streams, rivers, and other moist areas. Susceptible to many pests and diseases, especially canker.
Tree Indiana Native Populus grandidentata [Bigtooth Aspen] This tree is very fast-growing with best development in moist, fertile soils but will grow on dry, sand or gravelly soils. It is very valuable for pulp wood. Often pyramidal in youth with a central leader, developing an oval, open, irregular crown at maturity.
Tree Populus × 'Red Caudina' [Red Caudina Poplar] This fast-growing plant is weak-wooded, weedy, and a litter problem, dropping twigs, flowers, branches, leaves, and fruits (the cottony masses that float through the air in early summer). In the wild, the parents of this hybrid tend to grow along streams, rivers, and other moist areas. Susceptible to many pests and diseases, especially canker. 'Red Caudina' is a narrow, all male cultivar that does not produce the problematic cottony fruits. It has red veination and…
Tree Indiana Native Populus tremuloides [Quaking Aspen] The common name of Populus tremuloides is derived from the tendency of the leaves to tremble (quake) in the wind, or even light breezes, due to flattened petioles. This is a fast-growing and short-lived species that regenerates from root suckers and can quickly recolonize disturbed sites. Generally, most of the specimens in a grove of P. tremuloides are clones, all originating from the same stem. This plant is dioecious, so groves are usually all male…
