Land Plants - invasive

Tree of Heaven (Ailanthus altissima) on Aug 18, 2022

Submitter has sample

Description of specimen

Gray bark, distinct smell, cluster of seeds that are individually propeller shaped. Rapid growing. Thousands of seeds. Seeds start as green/yellow and change to red/light brown as ages. Leaves are as discribed on web sites

Commentary

Thank you for your report! We will share this with the iMapInvasives program and the Oregon Dept of Agriculture.

Lindsey Wise
Sept. 22, 2022, 6:35 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

Trees found near intersection of reece and 5th street. Near south park . On personal property around housing. Also in neighboring town by Four Rivers Cultural Center parking lot and personal property near by.

Expert Reviewer

Mrs. Lindsey Wise
Oregon Biodiversity Information Center, inr.oregonstate.edu/orbic
Oregon iMapInvasives
Institute for Natural Resources
Portland State University

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