As stewards of over 3.2 million acres of public and private lands the Rogue Basin, the Jackson and Josephine County Cooperative Weed Management Areas (CWMAs) engage in the control of invasive plants in riparian zones, floodplains, and wetlands throughout the Rogue Basin. Riparian areas are not truly restored if diverse native plant communities degrade over time from an invasion of aggressive non-native species.
The two CWMAs, who work together, are a group of state and federal agencies, local governments, tribes, nonprofits, community organizations, and individuals who have joined their efforts to combat invasive species in the Rogue Basin. Coordinated by RBP staff, the CWMAs provide a forum to share information and resources, collaborate on planning, and cooperate on invasive species management.
Thanks to our funding partners–primarily the Bureau of Land Management and the Oregon State Weed Board– and expert applicators, our CWMAs helped public and private landowners monitor and control 410 acres of noxious weeds. With their persistence, the efforts are showing promise. Aggressive treatments– both hand pulling and, as appropriate, herbicide treatment– have limited infestations of several targeted species to relatively isolated patches along the mainstem Rogue River and within the Applegate watershed. The CWMAs have eradicated garlic mustard, a fast-spreading noxious weed, from four sites and reduced the density of mature plants at other sites.
In 2019, the noxious weed control program will continue to focus on garlic mustard and Dyer’s woad. Work on the garlic mustard sites will expand to include shiny geranium and perennial pepperweed. Surveys for aquatic weeds in the Basin’s lakes and reservoirs will also continue.
For more information on invasive weed control in the Rogue Basin, visit: http://rogueweeds.info/