Land Plants - invasive

Himalayan Blackberry (Rubus bifrons [R. aremeniacus, R. discolor, R. procerus]) on May 23, 2008

Submitter does not have a specimen

Description of specimen

Considerable infestation of blackberry observed expanding over the last six years I have been a neighborhood resident.


Dear Peter,

Thanks for your report! Yes, blackberry is a widespread problem in Oregon. I will forward your report to the Oregon Department of Agriculture so they can add this location to their database. I will also forward this report to the local SWCD and to the local Cooperative Weed Management area so they can determine whether this is a site to prioritize control. You may also want to contact them directly to learn more about local resources for weed management.

Unfortunately, unless it is directly threatening a high priority site, ODA and other organizations that manage weeds often cannot prioritize controlling species such as blackberry since it is already so wide spread. For a list of priority species in your area see this website:

If this infestation is on private land, you may want to join forces with your neighbors to control the blackberry. Here is a link to a fact sheet with more information on blackberry and its control.

Thanks again for your report!

Tania Siemens
Invasive Species Research Assistant
Oregon State University Sea Grant Extension
cell: 541-914-0701

Tania Siemens
May 28, 2008, 6:47 a.m.