Black Locust (Robinia pseudoacacia) on Feb 18, 2011
Submitter has sample
EDRR Status: Population assessed
Description of specimen
Photographs from 10-14-2009 of a very young (first season) seedling Robinia pseudoacacia, which I dug and photographed again to verify its seedling status. Had the seedling been left to grow, it would have been underwater close to half of the year.
I believe that our dry summer soils keep this from seeding about in drier settings. This seedling was close enough to summer water levels to be watered by the Clackamas.
Commentary
Expert Reviewer
Samuel Leininger
Clackamas Soil and Water Conservation District
4-County Cooperative Weed Management Area
Columbia Gorge Cooperative Weed Management Area
Reporter
Feb. 18, 2011, 1:07 p.m.
Thank you for your report of Black locust. While black locust is not a species that we are not actively controlling at this time, sightings such as this are very useful to us in evaluating what species and infestations to target for our rapid response program. Your report will us to reevaluate our local priorities to maximize the benefit to Clackamas County. So thanks again for taking the time to report this species. All the best,
Sincerely,
Samuel Leininger
WeedWise Program Manager
Clackamas Soil & Water Conservation District
221 Molalla Ave. Suite 102
Oregon City, OR 97045
503-210-6006
sleininger@conservationdistrict.org
www.conservationdistrict.org
Samuel Leininger
March 1, 2011, 9:23 a.m.