Tualatin Soil and Water Conservation District provides technical assistance, financial assistance, and education in order to create a sustainable, productive, healthy environment for the Washington County community. We identify natural resource challenges and use both time-tested methods and cutting-edge research to determine solutions. Working with residents, TSWCD helps the community implement sustainable solutions to conserve and enhance natural resources.
Woody Knotweeds Scientific Name: Giant: Polygonum sachalinense or Fallopia sachalinense Bohemian: Polygonum bohemicum Japanese: Polygonum cuspidatum or Fallopia japonica Himalayan: Polygonum polystachyum or Fallopia polystachyum Common names: Knotweed, fleece flower, false bamboo. Weed Class: Knotweed is a B-Listed species in Oregon. Is this weed toxic? No. Native Distribution: The four invasive woody knotweeds that grow […]
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