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 Pyrus salicifolia [Willowleaf Pear] The Willowleaf Pear is an uncommon, but elegant tree with arching branches covered with silvery, narrow, willow-like foliage. Attractive clusters of white flowers appear in the spring. Severe fireblight susceptibility.
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 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 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 Indiana Native Quercus michauxii [Swamp Chestnut Oak] Similar to Quercus montana but obtains a larger ultimate size and is found in moister soils. Common in low areas, river bottoms, swamp borders and ravines. It gained its common name of "Basket Oak" from the baskets created from its wood, and the common name "Cow Oak" from the sweet, edible acorns relished by cows.
Tree Quercus nuttallii [Nuttall Oak] New growth is reddish purple with red fall color. A fast grower that prefers zones 7, 8, and 9.
Tree Indiana Native Quercus palustris [Pin Oak] Handsome tree, distinctive for its regular branching, spreading to horizontal to pendulous, from top to bottom of the tree. This effect is partly lost when lower limbs must be removed for traffic underneath. Requires an acidic soil and is subject to severe iron chlorosis on calcareous soils. This can be corrected but it means additional maintenance.
Tree Quercus palustris 'Crownright' [Crownright Pin Oak] Handsome tree with a more upright habit that lacks the pendulous character of the lower branches seen in the species type. Requires an acidic soil and is subject to severe iron chlorosis on calcareous soils. This can be corrected but it means additional maintenance.
Tree Quercus palustris 'Emerald Pillar' [sold as Green Pillar®] [Green Pillar Pin Oak] This cultivar is a columnar habit, great for those smaller spaces. Its fall color is a vibrant red, which leads many to believe that the Scarlet Oak, (Quercus cocinea) is in the genetics of this cultivar. Green Pillar Pin Oak is grafted onto root stock, so graft incompatibility may be an issue in the future. Requires an acidic soil and is subject to severe iron chlorosis on calcareous soils. This can be corrected but it…
