Blueweed

Blueweed
(Echium vulgare)

Description

  • Native to Europe.
  • Biennial or short lived perennial.
  • Blue flowers on upper part of stalk.
  • Small stiff hairs on stem and leaves.
  • Likes dry, rocky and/or shallow soils.
  • Found in the Creston, Nakusp, Whatshan and Powder Creek area.

Consequences of invasion

  • Invades rangelands and pastures, impacting livestock.
  • Contain pyrrolizidine alkaloids, which can be toxic to horses and cattle when ingested.
  • Seeds can contaminate clover and other crop seeds.
  • Known host for several plant diseases spread by aphids including alfalfa mosaic virus and tobacco mosaic virus.
  • Seeds viable for 36 months.

Integrated Pest Management Options

  • Pull or dig small infestations when soil is moist.
  • Proper pasture and rangeland management, minimizing soil disturbance and overgrazing.
  • Chemical control may work on larger infestations.

More information available:
Central Kootenay Invasive Plant Committee: CKIPC Plant Profile
Weeds BC: www.weedsbc.ca
Invasive Species Council of BC: www.bcinvasives.ca
Alberta Invasie Plant Council: www.invasiveplants.ab.ca
Montana State University: www.msuextension.org