Tree Populus × 'Red Caudina' [Red Caudina Poplar] This fast-growing plant is weak-wooded, weedy, and a litter problem, dropping twigs, flowers, branches, leaves, and fruits (the cottony masses that float through the air in early summer). In the wild, the parents of this hybrid tend to grow along streams, rivers, and other moist areas. Susceptible to many pests and diseases, especially canker. 'Red Caudina' is a narrow, all male cultivar that does not produce the problematic cottony fruits. It has red veination and…
Shrub Pyracantha coccinea [Scarlet Firethorn] A favorite for espalier training, because of the adaptable branching habit and showy orange-red fruits. Tends to be semi-evergreen in cooler climates and evergreen in warmer climates. Adapted to a variety of soils and environments. Fireblight can be serious. Other problems are scab and leaf and twig blight.
Shrub Pyracantha coccinea 'Kasan' [Compact Scarlet Firethorn] A favorite for espalier training, because of the adaptable branching habit and showy orange-red fruits. Tends to be semi-evergreen in cooler climates and evergreen in warmer climates. Adapted to a variety of soils and environments. 'Kasan' is a hardier (USDA zone 5), compact cultivar with spreading branches and excellent fruit set. Scab can be serious in this cultivar. Other possible problems include fireblight and leaf and twig blight.
Shrub Pyracantha coccinea 'Lalandei' [Lalandei Scarlet Firethorn] A favorite for espalier training, because of the adaptable branching habit, showy fruits, and vigourous growth. Adapted to a variety of soils and environments but is susceptible to scab. 'Lalandei' is the most popular Scarlet Firethorn cultivar in northern areas, although it may winter burn.
Shrub Pyracantha × 'Gnozam' [sold as Gnome®] [Dwarf Firethorn] 'Gnozam' is a dense, compact shrub that bears numerous attractive orange berries in the fall and through the winter, but is severely susceptible to scab. Firethorns are a favorite for espalier training, because of the adaptable branching habit and showy fruits. Tends to be semi-evergreen in cooler climates and evergreen in warmer climates. Adapted to a variety of soils and environments. Fireblight can be serious. Other problems are scab and leaf and twig blight.
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 macrocarpa [Bur Oak] More tolerant of city conditions than most oaks. Perhaps too large for a typical residential landscape when mature.
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 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.
