Tree InvasiveThis plant is considered invasive Pyrus calleryana 'Capital' [Capital Callery Pear] Overused, weak wooded, short-lived. Flowers are malodorous and often killed by late spring freezes. Forms narrow crotch angles that can result in a larger tree literally splitting in two. Very small fruits are a litter problem when abundant. 'Capital' is narrow-columnar in form and is severely susceptible to fireblight. The aesthetics of this cultivar decrease considerably with age. Considered invasive in many areas.
Tree InvasiveThis plant is considered invasive Pyrus calleryana 'Glen’s Form' [sold as Chanticleer®] [Chanticleer Callery Pear] Generally considered to be one of the best cultivars of P. calleryana. While still prone to limb breakage, it is stronger wooded than other variants. The Chanticleer Callery Pear is also known for its resistance to fireblight. Flowers are malodorous and often killed by late spring freezes. Very small fruits are a litter problem when abundant. Considered invasive in many areas.
Tree InvasiveThis plant is considered invasive Pyrus calleryana 'Redspire' [Redspire Callery Pear] 'Redspire' is one of the better P. calleryana cultivars, with a looser form and somewhat slower growth rate (less prone to limb breakage), but it does have severe fireblight susceptibility. Flowers are malodorous and often killed by late spring freezes. Very small fruits are a litter problem when abundant. Considered invasive in many areas.
Tree Indiana Native Quercus bicolor [Swamp White Oak] The Swamp White Oak is a sturdy, long-lived tree that is generally tolerant to average conditions and even wet soil, but requires full sun and acidic soil.
Tree Quercus bicolor 'Bonnie and Mike' [sold as Beacon®] [Beacon Oak] 'Bonnie and Mike' is a cultivar with dense and glossy green foliage. Good for urban use with its tight upright columnar branching. It also has yellow fall color.
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 phellos [Willow Oak] Somewhat tolerant of city conditions. Oak wilt and scales, and many other oak tree pests, though none considered very serious. Low maintenance, long-lived tree. Use Northern sources in Indiana.
Tree Quercus robur × bicolor 'Nadler' [sold as Kindred Spirit®] [Kindred Spirit Hybrid Oak] 'Nadler' is a cultivar with a tight columnar form branching from the ground, adapted to many soil types, and a yellow-brown fall color.
