| Zone 3 trees should be planted a distance of at least 35 feet from overhead power lines and structures. | |
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Freeman Maple Acer x Freemani (65') This is an interspecific hybrid between silver and red maples. It takes advantage of some of the assets of each of its parents. Freeman maples are more urban-tolerant and more tolerant of alkaline soils than red maple. By selecting the individual cultivar, fall color can be outstanding. 'Autumn Blaze' has stunning scarlet fall color. 'Celebration' has particularly good branching structure and moderate growth rate. 'Armstrong' is upright for about 20 years, then returns to a normal habit of growth. Red maple is similar in many respects but is less urban tolerant with a 20-25 year service life. Service life exceeds 30 years. |
Ginkgo Ginkgo biloba (60') The leaf is an unusual fan shape with yellow fall color. This plant has a high degree of insect and disease resistance and is quite tolerant of dust and dirt in urban areas. Male selections of ginkgo are preferred because they do not have the bad-smelling fruit. 'Autumn Gold,' 'Lakeview,' 'Princeton Sentry' and 'Fairmount' are known male selections. Growth habit is highly variable within cultivars. Service life is 30-plus years. |
Thornless Honeylocust Gleditsia triacanthos (65') 'Moraine,' 'Shademaster' and 'Skyline' are good selections. 'Skyline' is the most pest-resistant honeylocust. They are extremely fine-textured trees. A somewhat vase shaped habit of growth when young gives way to a irregular growth pattern as the tree matures. If desired, a gold summer foliaged form is available. Improved cultivars normally have less fruit than the species. Service life varies from 15 years in high-stress areas to 30 years in lawn areas. |
Kentucky Coffeetree Gymnocladus dioica (60') This large plant is particularly useful for planting near windows. This plant's gaunt habit during the winter allows light passage while the foliage blocks sunlight during the summer months. This urban-tolerant plant also tolerates restricted root space and poor soils. Kentucky coffeetree is slow growing early and faster after 10 years. Service life is 30 years. |
American Sweetgum Liquidambar styraciflua (55') Young plants are generally pyramidal, becoming broader and less regular in habit with age. The 1-inch diameter fruit may be a litter problem. Cold-hardy selections such as 'Moraine' and' Variegata' or cold-hardy seed sources are a must in Ohio. Fall color ranges on a single plant from primrose to a deep wine. Some of the southern selections such as 'Burgundy,' 'Festival' and 'Palo Alto' are not cold-hardy in Ohio. Plants are tolerant of restricted soil space. Service life is 25 years. | |