Himalayan Blackberry (Rubus bifrons [R. aremeniacus, R. discolor, R. procerus]) on Jun 3, 2014
Submitter does not have a specimen
EDRR Status: Local expert notified
Description of specimen
Over the last 10 or more years these yard are left unattended. This year they are much worse. The blackberries are very much out of control. The blackberries are not the only plants out of control but they are the fastest growing. The curbs are no longer visible because of overgrown plants. This covers three addresses along Colony circle. They are the front yards of the three houses shown on the map uphill from the terrible yards.
Commentary
Expert Reviewer
Samuel Leininger
Clackamas Soil and Water Conservation District
4-County Cooperative Weed Management Area
Columbia Gorge Cooperative Weed Management Area
Thank you for submitting your report to the Oregon Invasives Hotline. Himalayan blackberry is unfortunately widespread throughout Clackamas County and adversely effect the livability of our community.
Unfortunately, the resources required to control this invader are limited in relation to the overall need. As such we must rely upon landowners to initiate control on property they own or manage. We currently offer technical information and assistance to local landowners to help them develop a management strategy that is effective for their particular site conditions and needs.
I encourage you to continue to work with your neighbor and seek compromises to address invasive species concerns. Cooperative efforts are generally the most productive means for achieving success. I am including a list of management resources and I encourage you to share these with your neighbor.
Riparian Blackberry Factsheet: http://extension.oregonstate.edu/catalog/pdf/em/em8894.pdf
Blackberry Best Management Practices: http://your.kingcounty.gov/dnrp/library/water-and-land/weeds/BMPs/blackberry-control.pdf
If you you are unable to work collaboratively with your neighbors I encourage you to contact your local code enforcement entity, regarding local nuisance ordinances that may exist for your local.
Again thank you for your time in reporting this infestation. We appreciate your efforts and we will do everything we can to help address this concern. Please feel free to contact me if you have additional questions.
Thanks
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
June 5, 2014, 10:28 a.m.