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

Corn gromwell
Lithospermum arvense L. or   Buglossoides arvensis     
Borage Family

Key identifying traits

  • Leaves are lance shaped and without stalks

  • Plants grow anywhere from 4-24 tall and are usually slender

  • Flowers are white or bluish-white

  • Flowers are funnel shaped and have 5 petals

  • Fruit consists of 4 small nutlets that are grayish brown and pitted

  • Plants are covered with short bristly hairs

Biology and ecology

  • An annual plant spreading by seeds

  • It is usually the most troublesome in winter grains

  • This plant was introduced from Europe and now grows widespread through the U.S.

  • Grows along road sides and in fields as well as  other disturbed sites

Control

NOTE: This plant is listed for identification purposes only. We do not suggest removal of the plant from any sites where it is not in competition with crops.

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

Biological No known biological control in our area

Cultural Plant competitive grass or other cover crop

Mechanical Tilling is effective but plants are often too small for mowing to work

Chemical Corn gromwell is listed as susceptible to many herbicides: refer to the PNW Weed Management handbook for specific chemical recommendations


 2004 Ben Legler, WTU Herbarium


2004 Ben Legler, WTU Herbarium

 

 


 Photo by Bernd Haynold,
commons.wikimedia.org


Where found
Scattered throughout Stevens County but usually not a problem except in crops especially winter grains.

MSdoc     PDF

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

Home ] Up ]

Questions or Comments About This Web Design