Key identifying traits
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Leaves are lance shaped and
without stalks
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Plants grow anywhere from 4-24”
tall and are usually slender
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Flowers are white or
bluish-white
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Flowers are funnel shaped and
have 5 petals
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Fruit consists of 4 small
nutlets that are grayish brown and pitted
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Plants are covered with short
bristly hairs
Biology and ecology
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An annual plant spreading by
seeds
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It is usually the most
troublesome in winter grains
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This plant was introduced from
Europe and now grows widespread through the U.S.
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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
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