Prohibited Street Tree List
Prohibited Street and Park Trees List
- Siberian Elm – non-native, prolific invasive
- Ailanthus (Tree of Heaven) – non-native prolific invasive, sprouter, allelopathic, difficult to eradicate once established
- Ash (Fraxinus spp) – threatened by spread of emerald ash borer insect moving from east to west across the continent.
- Aspen – native, but has a habit of prolific sprouting from root system that can damage lawns and improvements
- Black Locust- non-native tree, fast-growing, brittle and sheds large branches prolific root sprouter
- Russian Olive – fast-growing, prolific seeder and re-sprouter, difficult to eradicate
Suitable for Parks and Yards in Some Conditions
- Willow – water-loving, but shallow root system that can uplift asphalt. Do not plant near streets, sidewalks, and underground utilities. Roots on ground surface can make mowing difficult.
- Silver Maple – fast growing with a shallow root system, do not plant near streets, sidewalks, and underground utilities. Roots on ground surface can make mowing difficult.
- Black Hawthorn – favored wildlife food source. Has long thorns that scratch and puncture, so it can create an effective hedge barrier and discourage traffic.
Discouraged Yard Trees
- Siberian Elm - non-native, prolific invasive
- Ailanthus (Tree of Heaven) - non-native prolific invasive, sprouter, allelopathic, difficult to eradicate once established
- Ash (Fraxinus spp) - threatened by spread of emerald ash borer insect moving from east to west across the continent.
- Aspen - native, but has a habit of prolific sprouting from root system
- Black Locust - non-native tree, fast-growing, brittle and sheds large branches, prolific root sprouter
For more information:
- https://www.familyhandyman.com/list/trees-you-should-never-grow-in-your-yard/
- Recommended and acceptable tree lists are maintained and updated by Pendleton Tree Commission and available from Parks and Recreation.