Submitter does not have a specimen
EDRR Status: Local expert notified
Japanese Knotweed clump, trailing canes through reed canarygrass to waters edge.
Sept. 1, 2009, 4:26 p.m.
Knotweed Shrub Complex: Identification, Biology, and Management, Oregon Extension Service
Creekside bank soil above normal water level, East side of creek just above current low water line.
Samuel Leininger Clackamas Soil and Water Conservation District4-County Cooperative Weed Management AreaColumbia Gorge Cooperative Weed Management Area
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