Land Plants - invasive

Tree of Heaven (Ailanthus altissima) on Aug 10, 2021

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

Description of specimen

Very large tree of heaven. There are several in the neighborhood and they get seedlings everywhere.

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

Yard with large, flowering tree of heaven. Sends starts all over the neighborhood. We’re near the Springwater corridor and Johnson Creek, so I worry about it spreading to protected areas.

Expert Reviewer

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

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