Land Plants - invasive

Tree of Heaven (Ailanthus altissima) on Jul 1, 2025

Submitter does not have a specimen
EDRR Status: Local expert notified

Description of specimen

There is one really established tree that is about 25’ tall or more. There are several smaller trees of heaven around the larger one in the backyard. There are also several along the sidewalk between 51st and Stanley.

Commentary

None

Remedy

Check out a really thorough guide regarding tree of heaven identification and control OSU’s Solve Pest Problems: https://solvepestproblems.oregonstate.edu/weeds/tree-of-heaven

The Portland metro-area Cooperative Weed Management Area also has some great best management practices for handling this weed The 4 County CWMA: https://4countycwma.org/assets/best-mgmt-practices/tree-of-heaven-bmp_final.pdf

Resources

https://solvepestproblems.oregonstate.edu/weeds/tree-of-heaven

https://4countycwma.org/assets/best-mgmt-practices/tree-of-heaven-bmp_final.pdf

Location

There are several Trees of Heaven in the backyard at 51st and Logus.

Expert Reviewer

Samuel Leininger
Clackamas Soil and Water Conservation District
4-County Cooperative Weed Management Area
Columbia Gorge Cooperative Weed Management Area

© 2025 Portland State University | Contact us for questions regarding site content