Ash | European (Fraxinus excelsior ‘Kimberly Blue’) | Problems with grafted stock. Short lived. |
Birch | Weeping or white (Betula papyrifera, Betula pendula) | Does not tolerate summer heat. Susceptible to Bronze Birch Borers.
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Box Elder | (Acer negundo) | Shallow root system, soft and brittle wood, short lived, subject to wind break age which can be damaging to property. |
Cottonwoods | Poplars, Willows (Salix genus) | Very brittle wood. Shallow root systems will heave sidewalks and invade sewer lines and foundations. Aphids feed vigorously on foliage. |
Elms | (Ulmus species) | Susceptible to Dutch Elm Disease, and a variety of other insects and diseases. A very high maintenance tree that must be sprayed two to three times a year for elm leaf beetle control. |
Honeylocust | Thorned (Gleditsia triancanthos) | Large, thorny branches are hazardous. Messy seed pods. |
Locust | Black (Robinia pseudoacacia) | Extremely susceptible to locust borer attack, presently a major problem in our area. Subject to wind damage due to shallow root system and weak branches. Branches have prickly spines. |
Maple | Red (Acer rubrum) | Soft, brittle wood and shallow root system. Very susceptible to cottony scale and aphid attack. Some varieties within this species may be allowable. Does not do well in full sun. |
Maple | Silver (Acer saccharinum) | Soft, brittle wood subject to breakage. Shallow roots can be damaging to sidewalks and foundations. Very susceptible to scale and aphids. |
Sycamore | (Platanus occidentalis) | Susceptible to anthracnose. Constantly dropping leaves, twigs, and fruit are a problem. Requires frequent pruning. |
Tuliptree | (Liriodendron tulipifera) | Very susceptible to leaf scorch. Brittle wood and aphids are a problem. |
Walnut | Black (Juglans nigra) | Heavy infestations of aphids causes an unpleasant ‘honeydew’ drip. Large, acidic nut can be a problem. The leaves, fruit, and roots of this genus can be toxic to nearby plants. |