Stevens County Noxious Weed Control Board
This web site will help you identify & control noxious weed with information and photographs to aid you.

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Coast fiddleneck
Amsinckia intermedia                        
Borage Family

Key identifying traits

  • Flowers are small yellow and grow along one side of the stem
  • Stems and leaves are covered with bristly hair
  • The tips of the plants are curled into a “fiddleneck” or scorpion tail appearance
  • Fruits form in 4 nutlets, each containing one seed
  • Plants will grow to 1 - 2 ˝’  tall
  • When they begin to dry, hairs are brittle and stick into skin

Biology and ecology

  • An annual reproducing from seed
  • Plants are toxic to horses, cattle and pigs when they are green or dry in hay, potentially causing severe liver damage
  •  This plant is a native of California and Oregon now widespread across the U.S.
  • Commonly seen in barnyards, corrals, newly planted fields, and overgrazed areas

 Control

Prevention – Learn to identify plants; check areas where hay is fed or animals are held, areas where soil is disturbed or overgrazed

Biological – No known biological control

Cultural – Does not compete well with a good grass or perennial plant stand

Mechanical – Cultivation works good as well as hand pulling small areas, mowing before seed production can kill many of the plants

Chemical – Difficult due to the hairs and must be done before seed production: refer to the PNW Weed Management Handbook for specific chemical recommendations in various sites


Where found –
Scattered all across Stevens County at this time mostly in corrals, barnyards and waste areas.

MSdoc    PDF

weedboard@co.stevens.wa.us
Last Edit: January 08, 2014
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