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Portland Trees

Call before you cut

phone: (503) 823-TREE (8733)

email: trees@portlandoregon.gov

1900 SW 4th Avenue, Portland, OR 97201

How to Plant Properly

A permit is required to plant street trees in the right-of-way. 

Planting Season

The planting season in Portland extends from October 1 through April 30. Planting during this timeframe is recommended. Planting during the summer months (May 1-September 30) is not recommended. Trees planted during the summer months should receive extra watering as needed to ensure tree survival and establishment.

If a non-development permit is issued outside of the planting season, planting may be deferred until the next planting season in order to promote survivability. Talk to your Tree Inspector about deferring planting until the planting season.

Tree Size Requirements

Newly planted trees must be a minimum caliper size as defined below. This is to encourage planting large caliper trees, which have more desirable established structure and are less prone to vandalism. Tree caliper is measured at 6” above the tree’s natural ground line for trees <4”, or at 12” for trees >4”.

Broadleaf tree size requirements:

Development type

Street tree minimum 
caliper size

Private tree minimum caliper size

One and two family residential

1.5”

1.5"

Multi-dwelling residential

2.0”

1.5"

All others

2.5”

1.5"

Conifer tree size requirements: Conifer trees must be a minimum of 5 feet in height at time of planting.

Tree Species for Planting

Street tree species for planting must be selected from the Approved Street Tree Planting List that corresponds to planting site conditions. 

Trees on the nuisance list may not be planted as street trees or on private property.