Land Plants - invasive

Tree of Heaven (Ailanthus altissima) on Sep 30, 2021

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

Description of specimen

Very large Tree of Heaven with many flowers at East end of parking lot near "horseshoe pitch" in Clackamette Park, Oregon City.
Needs flowers remove ASAP as the WILL get into the Willamette River at this park. Noted early SEP 2021.

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

Clackamette Park in Oregon City in the Parking Lot

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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