Tree InvasiveThis plant is considered invasive Pyrus calleryana [Callery Pear] Overused, weak wooded, short-lived. Flowers are malodorous and often killed by late spring freezes. Some fireblight susceptiblity. Forms narrow crotch angles that can result in a larger tree literally splitting in two. Very small fruits are a litter problem when abundant. Considered invasive in many areas.
Tree InvasiveThis plant is considered invasive Pyrus calleryana 'Bradford' [Bradford Callery Pear] The cultivar 'Bradford' was exceedingly popular in the recent past, becoming overused because of its beautiful white flower show and outstanding scarlet to purple fall color. However, it is now advised not to use this short-lived cultivar, as it has very weak wood and tight branch angles and is quite prone to serious breakage. Forms narrow crotch angles that can result in a larger tree literally splitting in two. Flowers are malodorous and often killed…
Tree Indiana Native Quercus alba [White Oak] One of the most majestic trees at maturity with a picturesque framework, but requires many years to reach maturity. Long-lived, the kind of tree to use where it can be appreciated by succeeding generations. Slow growth eliminates it as a tree for quick effect. Roots are highly sensitive to disturbance, even foot traffic. Almost impossible to transplant from the wild. Often difficult to find in nurseries due to slow growth and recalcitrance to propagation by…
Tree Indiana Native Quercus coccinea [Scarlet Oak] Excellent scarlet fall foliage, comparable if not often better than the Pin Oak. Does not suffer iron chlorosis as bad as Pin Oak, being more tolerant of alkaline soils. Some report difficulty in transplanting.
Tree Quercus × 'Crimschmidt' [sold as Crimson Spire™] [Crimson Spire Oak] The Crimson Spire Oak is notable for its powdery mildew resistance and reddish fall color that it gained from its White Oak parent, in addition to the dense, strong, vertical, columnar form, and tolerance to drought and urban conditions gained from its Fastigiate English Oak parent.
Tree Indiana Native Quercus ellipsoidalis [Northern Pin Oak] Quercus ellipsoidalis is very closely related to Q. palustris (Pin Oak), but is better suited for the Midwest. Very similar to the Pin Oak, the Northern Pin Oak is a handsome tree with distinctive and regular branching, spreading to horizontal to drooping, from top to bottom of the tree. This effect is partly lost when lower limbs must be removed for traffic underneath. While this species is still prone to chlorosis (yellowing of leaves) in…
Tree Quercus falcata [Southern Red Oak] Generally only hardy up to zone 6, this oak is native to southeastern regions of the United States, but can sometimes be grown in colder climates. This tree gained its specific epithet name, "falcata", from the sickle-like weapon of the same name, in reference to the sickle-shaped lobes of the leaves. Root disturbance is known to severely affect this species, and can lead to decline or death.
Tree Indiana Native Quercus imbricaria [Shingle Oak] Somewhat tolerant of city conditions. Can be pruned into a hedge. Leaves persist into winter, after the normal leaf raking period, and then fall. Oak gall susceptible, but a minor problem.
Tree Quercus macrocarpa 'JFS-KW3' [sold as Urban Pinnacle® Oak] [Urban Pinnacle Bur Oak] 'JFS-KW3' is a cultivar with smaller acorns that other bur oaks. It has glossy foliage that turns yellow in the fall and has disease resistance to both powdery mildew and anthracnose.
Tree Indiana Native Quercus marilandica [Blackjack Oak] The Blackjack Oak is a small to medium sized tree with distinct, stout, irregular branches. It is very tolerant of poor, dry conditions, but does not tolerate wet conditions. This oak's common name is in reference to its dark, blackjack-like leaves.
