Tree InvasiveThis plant is considered invasive Ailanthus altissima [Tree of Heaven] Unusual form and texture not unlike a large sumac. Highly adaptable. Tolerates salt spray. Dioecious. Coarse and inclined to drop twigs. Male flowers are malodorous; female plants make many weed seedlings. Ailanthus altissima forms dense, clonal thickets which displace native species and can rapidly invade fields, meadows, and harvested forests. This invasive tree species is extremely tolerant of poor soil conditions and can even grow in cement cracks. Ailanthus altissima is not shade tolerant, but…
Tree Betula pendula [European White Birch] A graceful tree with beautiful white bark and pendulous branches, the European White Birch was once a common tree in many landscapes across the United States. However, the popularity of this species has decreased rapidly due to its extreme susceptibility to the birch borer. Despite its beautiful aesthetics, other birch species, such as Betula nigra (the River Birch), are recommened for use in the landscape instead.
Tree Betula pendula ssp. mandshurica [Asian White Birch] A generally better choice than the species type, Betula platyphylla var. japonica is a larger, graceful tree with thinner, spreading branches and striking pure white bark. It is especially well adapted to wet soilsand does not do well in dry situations. Less subject to the borer troubles of B. papyrifera in the Midwest, although still susceptible.
Tree Indiana Native Betula populifolia [Gray Birch] Beautiful white bark, although becomes dirty gray with age. Does well on the poorest of sterile soils, seeds, and suckers quickly. Grows on sandy, rocky and even gravelly sites. Tolerates both wet and dry conditions. Prefers full sun. Susceptible to leaf miner and cankers; more resistant to the bronze birch borer. Leaf minors especially problematic.
Tree Betula × 'Crimson Frost' [Crimson Frost Birch] This hybrid birch is very closely related to Betula platyphylla in form and care, with the exception of its striking red-purple leaves. It is a graceful tree, interesting for its pure white bark that contrasts nicely with the dark foliage. The Crimson Frost Birch is especially well adapted to wet soils, and does not do well in dry situations. Less subject to the borer troubles of B. papyrifera in the Midwest, although still susceptible.
Tree Indiana Native Castanea dentata [American Chestnut] Highly susceptible to chesnut blight, causing this tree to be nearly extinct in the wild.
Shrub/Tree Indiana Native Euonymus atropurpureus [Eastern Wahoo] The Easter Wahoo is an Indiana native shrub/small tree that can be found in open woods or along forest edges and is grown for its attractive red fruits and great fall color. Due to its irregular habit, the Eastern Wahoo can be an issue in the formal landscape, but regular pruning can fix this issue. Far less invasive than the infamous Euonymus alatus (Winged Euonymus or Burning Bush). Flowers are small, rich purple that bloom…
Tree Indiana Native Gleditsia aquatica [Water Locust] This native Indiana tree species is found in three southwestern counties near the lower Wabash River. It is often found in wet or ponded locations where there is standing water or high water tables. Not recommended for the landscape as it has large, multi-pronged thorns. Like its cousin, the honey locust, it has compound leaves, but can be differentiated by its location, much smaller seed pods, and flattened thorns along the branches.
Tree Malus × [Flowering Crabapple] The Flowering Crabapple is a popular small ornamental tree with an extremely showy flower display in the spring. There are hundreds of types of crabapples available, and more being cultivated every day. Flowers can range from white to pink to purple to red and are followed by small pome fruits (crabapples) that can be red, yellow, orange, purple, or green. Tends to flower and fruit in alternate years. Well-drained heavy loam soils and full sun…
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…
