Land Plants - invasive

Tree of Heaven (Ailanthus altissima) on Aug 12, 2024

Submitter does not have a specimen

Description of specimen

5-7 trees - 2 over 10 ft tall.

1 Himalayan blackberry bush - 7 ft wide and 70-100 ft in length

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

In the alleyway behind my house - there are several tree of heaven (two large over 10 ft) and the largest blackberry I have ever seen. It takes up the whole alleyway and has blocked access - and growing up on roofs of neighbors and impeding native wildlife and humans alike

Expert Reviewer

Whitney Bailey
EMSWCD

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