The King County Noxious Weed Control Program (KCNWCP) and its partners propose to comprehensively and sustainably reduce the impact of knotweed in riparian ecosystems in the headwaters of the Skykomish River. We aim to achieve this goal by treating existing knotweed infestations, and following up with targeted replanting to restore natural riparianhabitat processes. Knotweed, if poorly controlled, is a major disrupter of riparian health, thereby threatening salmonid habitat in Puget Sound making control work a necessary starting point for any landscape scale restoration effort. This project builds on ten years of previous work in the area and leverages on gains made in this system to provide the unique planting and restoration opportunities that this project implements. Work will occur over 450 acres along 22 rivermiles and supports long term habitat goals. Collaborative relationships that we have built with landowners and residents in the watershed are key to our success and allow for stewardship at the local level. Local stewardship is the most effective way to ensure the long term sustainability of our work. Landowners are contacted directly to work with the program, and an additional network of trained volunteers supports a citizen scientist network of surveyors who can provide early detection information on new invasions before they spiral beyond easy control levels.