LINCOLN SOIL AND WATER CONSERVATION DISTRICT
  • Home
  • About Us
    • Mission and Values
    • District Staff
    • Board of Directors
    • History
    • Annual Reports
    • Partners
    • Employment
  • Get Involved
  • Events
  • Siletz Focus Area
  • Resources
  • District Programs
  • Contact Us

Bohemian Knotweed
Fallopia x bohemica

Bohemian knotweed is a vigorous and fertile hybrid that is the result of a cross between Japanese and giant knotweed. 

​Physical Description
There is a high degree of morphological variability in Bohemian knotweed. Physical characteristics of bohemian knotweed range from being indistinguishable from Japanese knotweed to being indistinguishable from giant knotweed, with most individuals exhibiting intermittent characteristics between the two species.

  • Broadly ovate to narrowly ovate leaf with a flat to heart shaped base that are 7-14 inches long
  • 6-11 feet tall
  • Green segmented stems with or without red to brown spotting that are variable width
  • Stout leaf hairs up to 1/2 mm long
  • The cross section of the middle leaf vein is square to slightly rounded in shape
  • Papery sheaths between stem sections
  • Hollow stems
  • Cream colored, sweet smelling, linear flower bunches at each leaf. That often appear to have a more upright appearance than Japanese or giant knotweed
Spectrum of leaf shapes of Japanese, giant and hybrid bohemica knotweed species
Picture
​Control Efforts
Bohemian knotweed infestations take several years of treatment to control and the most effective method is repeated herbicide application. Contacting a natural resource professional as early as possible is integral to knotweed control. If you see bohemian knotweed contact the Oregon Invasives Hotline as well as Lincoln SWCD by phone at 541.265.2653 or email.

Click the link below for an in-depth summary of current knotweed control practices:
Knotweed Control Methods

Our Services

Water Quality Program
Watershed Restoration & Enhancement
Invasive Species Control
Water Quality Monitoring
Fish Surveying & Habitat Assessment


Our District

District Staff
District Board of Directors
District History
About Lincoln SWCD

Support

Contact Us
Picture
Physical Address:
411 NE Avery St, Suite B

Newport, Oregon 97365


Mailing Address:
P.O. Box 742 

South Beach, OR  97366

Phone: (541) 265-2631​
Email: info@lincolnswcd.org

Office Hours: M-F 8:00 - 4:00*

​*Unless in the field. Please contact us to make an appointment. 

  • Home
  • About Us
    • Mission and Values
    • District Staff
    • Board of Directors
    • History
    • Annual Reports
    • Partners
    • Employment
  • Get Involved
  • Events
  • Siletz Focus Area
  • Resources
  • District Programs
  • Contact Us