Tree Indiana Native Liquidambar styraciflua (Shuttle Gum Group) [American Sweetgum] This group of Liquidambar styraciflua (Sweetgum) trees was germinated in August of 1984 aboard the space shuttle Discovery. Purdue astronaut Charles Walker of Bedford, Indiana, brought back 200 tiny trees; these recognize Purdue's many astronauts. Sweetgums are handsome shade trees with few troubles and outstanding seasonal interest. Widely adapted to soils and climates, as evidenced by their wide range. Fall foliage coloration varies greatly in timing and intensity among individuals. Rather difficult to transplant in…
Tree Indiana Native Liriodendron tulipifera [Tuliptree] Handsome, tall shade tree with strong central leader. Performs best in good soil with adequate moisture. Variable in hardiness, depending on geographic source. Use native stock when possible. State tree of Indiana, Kentucky, North Carolina, and Tennessee. Slightly weak-wooded. Subject to damage in very windy sites. Subject to aphid and scale insects when weakened. Needs good drainage and a lot of soil (tree lawn may be too small). Its poorly branched fleshy root system (taproot)…
Tree Indiana Native Magnolia tripetala [Umbrella Magnolia] Full sun or light partial shade. Tropical appearance. Flowers are creamy white with an unpleasant smell. The cone-like rosy red fruit matures in September-October. Endangered in Indiana. Large leaves can be injured by hail or wind. Perhaps too coarse for most landscape situations.
Shrub Mahonia aquifolium [Oregon Grapeholly] Widely adapted to soil type and environment, except high pH soils that will cause chlorosis. Quite susceptible to winter-burn. Do not plant in sites exposed to strong winds or afternoon sun in winter. Can get leggy with age. Fruits are edible and can be used in jellies.
Tree Malus × 'Adirondack' [Adirondack Flowering Crabapple] The Flowering Crabapple is a popular small ornamental tree with an extremely showy flower display in the spring. This variant has a vase-shaped (somewhat columnar) habit, extremely upright branching, and high resistance to apple scab, fireblight, cedar-apple rust, and powdery mildew. Tends to flower and fruit in alternate years. Well-drained heavy loam soils and full sun promote best growth.
Tree Malus × 'Indian Magic' [Indian Magic Flowering Crabapple] The Flowering Crabapple is a popular small ornamental tree with an extremely showy flower display in the spring. 'Indian Magic' is not as disease resistant as others, being moderately susceptible to scab. Tends to flower and fruit in alternate years. Well-drained heavy loam soils and full sun promote best growth. Can be susceptible to many pests and diseases, including apple scab, fireblight, Japanese beetles, leaf spot, cedar-apple rust, and powdery mildew. May look ragged at…
Tree Malus sargentii [Sargent Crabapple] The smallest of all Malus species, almost a shrub. Strongly horizontal branching. Tends to be apomictic (seeds develop without fertilization), so is usually very uniform from seed (i.e. clonal). Sometimes flowers and fruits in alternate years. Susceptible to apple scab disease. May require pruning of wayward and crossing branches to maintain a nice form.
Tree InvasiveThis plant is considered invasive Phellodendron amurense [Amur Corktree] A striking tree for its interesting bark and massive framework. Widely adaptable to soil, trouble-free, and drought and pollution resistance. Easily transplanted. May be less hardy when young and rapidly growing. Fruits smell like turpentine when crushed (or stepped on). This tree is demonstrating invasive characteristics in suburban and urban fringe forests. It escapes intended plantings to invade and displace native hardwood forests. Note: only female plants have the potential to become invasive. Phellodendron amurense…
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 Prunus sargentii [Sargent Cherry] One of the better performing and useful cherries available. Beautiful, polished reddish to chestnut brown bark on older trunks. Subject to several minor pests, none usually serious.
