Land Plants - invasive

Tree of Heaven (Ailanthus altissima) on Aug 14, 2026

Description of specimen

Submitter has sample

2 feet tall sprouting from neighbors neglected yard.

Commentary

Avatar of commenter That is indeed tree of heaven. You can talk with your neighbor about control. Here's more information.

https://tualatinswcd.org/species/tree-of-heaven/

Since these are widely dispersed, like blackberry, we don't have the resources to control this for landowners. If you'd like to continue documenting their presence in our community, I'd suggest making posts on the iNaturalist app. We incorporate that data into our invasives work and it would be beneficial if we were to get more funding to work on tree of heaven in the future.

Keith Nasman
Invasive Species Technician
Tualatin Soil & Water Conservation District
keith.nasman@tualatinswcd.org

Keith Nasman
Aug. 27, 2026, 8:56 a.m.

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

Neighbors front side yard next to my gate.

Expert Reviewer

Avatar of Reviewer

Keith Nasman
Tualatin SWCD

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