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

Home Weed List More Weeds Programs Staff/Board
New(s) Map to Office Cities and Areas Glossary Credits& Links

Western salsify
Tragopogon dubius             
Sunflower Family

Key identifying traits

  • Plants grow erect, 1-3 tall & have a long taproot

  • Leaves are up to 12 long and are narrow

  • Plants contain a milky juice

  •  Flowers are lemon-yellow ray flowers

  • Each stalk is swollen just beneath the flower head

  • Seed heads look like huge dandelions

Biology and ecology

  • A biennial plant spreading by seeds

  • A plant commonly growing in waste areas and along road sides

  • This plant is from Eurasia and is now established over much of North America

  • It is not usually an aggressive plant in our county

  •  There are two other similar species: meadow salsify which is not swollen beneath the flower and common salsify which has purple flowers

Control

Prevention Learn to identify plants; start monitoring early in the season

Biological No known biological control here

Cultural Plant competitive grass or other cover crop

Mechanical Does not tolerate tillage and will pull up fairly easily

Chemical the PNW Weed Management handbook lists clopyralid + 2,4-D &  chlorsulfuron + metsulfuron as being good for control of salsify


Photo: Mike Haddock, http://www.lib.ksu.edu/wildflower/

 
Photo: Mike Haddock, http://www.lib.ksu.edu/wildflower/


Where found
Scattered areas of plants all through Stevens County but no dense populations are known to be present.

MSdoc     PDF

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

Home ] Up ]

Questions or Comments About This Web Design