Services, Guides, and Information
296 services and resources found
Heritage Trees of Portland
Handbook
Heritage Trees are trees that have been formally recognized by City Council for their unique size, age, historical or horticultural significance. Once accepted by Council, Heritage Trees are designated with a small plaque and listed in the Heritage Tree database.
All applications must be complete and accurate with verifiable photos and correct payment.
How to Measure a Tree
Guide
Diameter at breast height, or DBH, is the standard for measuring trees. DBH refers to the tree diameter measured at 4.5 feet above the ground.
How to Plant Properly
Guide
How to Prevent Sidewalk Damage
Information
The best protection against sidewalk damage is to plant the right tree in the right place. Other preventative measures include installing root barriers at time of planting and encouraging deep root growth.
How to Prune Properly
Information
Helpful resources and instructions for proper pruning
How to Root Prune Properly
Information
Identifying High Voltage Power Lines
Information
How to identify high voltage power lines.
Inclement Weather Information and Closures
Information
Portland Parks & Recreation posts information on closures, delays, and cancellations affecting our sites and programs during inclement weather.
Join the Heritage Tree Committee
Service
New Committee Members Sought
Juglans cinerea
Information
Juglans nigra
Information
Juglans regia
Information
Lagerstroemia indica
Information
Large Deciduous Trees
Information
Large Evergreen Trees
Information
Large Native Trees List
Information
Larix kaempferi
Information
Planting trees at schools provides an active learning opportunity for youth of all ages!
Liquidambar styraciflua
Information
Liriodendron tulipifera
Information
Local Tree Care Providers
Information
Find local tree care providers that have met certain criteria to be included on this list.
Magnolia acuminata
Information
Magnolia grandiflora
Information
Magnolia x soulangiana
Information
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