Resources
Arboriculture and Urban Forestry
American Society of Consulting Arborists (ASCA)
International Society of Arboriculture (ISA)
Pacific Northwest Chapter of ISA
City of Portland’s nuisance species list
Problematic trees and plants that cannot be planted within the City of Portland.
State of Oregon Urban Forestry
Urban and community forestry information for the state of Oregon.
Oregon State University Research Extension
Oregon specific information for tree health and gardening.
Detailed guide to selecting a tree that fits your needs.
Local Urban Forestry Policy
City of Portland Title 11 Trees
Portland’s tree regulating trees on public and private property in both non-development and development situations.
City of Portland Title 33 Planning and Zoning
Regulation of Portland trees within designated environmental overlay zones.
City of Milwaukee 17.32 Tree Code
Milwaulkee’s tree regulations for trees in the right of way, private property and city owned property.
Lake Oswego Chapter 55 Tree Code
City of Lake Oswego’s tree regulations for tree removal, heritage trees and tree protection
Oregon City’s code describing tree protection, preservation, removal and replanting standards.