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Weed Identification in Nurseries and Landscapes

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Corn speedwell - Veronica arvensis L.
Weed Identification in Nurseries and Landscapes > Corn speedwell
Corn speedwell lower leaf  
Corn speedwell upper leaf
Lower (left) and upper (right) leaves of corn speedwell.
Life cycle: Prostrate, spreading winter annual.

Leaves
: Lower and middle leaves are opposite, broadly egg-shaped, hairy, short-stalked with rounded teeth along the margins. Small, narrow, bractlike upper leaves are alternate and without petioles.

Stems
: Prostrate and mat-forming, with many branches that spread from the base.

Flowers and fruit:
Light blue to violet, inconspicuous flowers are formed in the axils of the upper bractlike leaves on elongated flowering stems. Fruit are hairy, roundly heart-shaped capsules that contain many tiny, yellowish seeds.

Reproduction
: Seeds.
 
Corn speedwell plant Corn speedwell flowering stem
Corn speedwell plants. Corn speedwell flowering stem.
Similar weeds: Purslane speedwell (Veronica peregrina L.) Differs by having a more erect habit; hairless, oblong to linear leaves with smooth to slightly toothed margins; and tiny white flowers.

Slender speedwell (Veronica filiformis Sm.) Differs by having a perennial nature with stems that root at the nodes, round to kidney-shaped leaves and bluish white flowers on slender flower stalks.
 
Purselane speedwell plant Purselane speedwell flowers Purselane speedwell capsules
Purselane speedwell plant. Purselane speedwell flowers. Purselane speedwell capsules.
 
Slender speedwell plant Slender speedwell stem
Slender speedwell foliage. Slender speedwell stem.
The MSU IPM Program maintains this site as an access point to pest management information at MSU. The IPM Program is administered within the Department of Entomology, fueled by research from the Michigan Agricultural Experiment Station, delivered to citizens through MSU Extension, and proud to be a part of Project GREEEN.
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Updated: 10/17/07