Land Plants - invasive

Tree of Heaven (Ailanthus altissima) on Aug 30, 2025

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

Description of specimen

Believed to be a Tree of Heaven, maybe 6 for 7 feet tall, tucked up next to a fence, surrounded by Oregon Grape. Pungent buttered popcorn smell to the leaves, pinnately compounded.

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

Next to the fence in the parking lot across the street from the Key Bank in Canby.

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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