Land Plants - invasive

Tree of Heaven (Ailanthus altissima) on Aug 20, 2020

Submitter has sample

Description of specimen

Tree of heaven, English ivy, blackberries, bamboo and morning glory, just to name a few.

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

We live next to an abandon lot that is full of invasive species. It’s a constant battle to keep our yard and our alley way clear. There is also a large tree of heaven in the lot across from us in our alley.

Expert Reviewer

Mr. Mitch Bixby
City of Portland - Bureau of Environmental Services (BES)

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