Common Name: speedwell, corn
Species: Veronica arvensis L.
Bayer Code: VERAR

Corn speedwell is a small, weak, low-growing winter annual that thrives in thin open turf and often appears in solid stands. The lower leaves of corn speedwell are rounded and toothed, while the upper leaves are smaller and more pointed. Like the other speedwells, the leaves are both alternate (end of stem) and opposite (base of stem). Corn speedwell is similar in many respects to Persian and ivyleaf speedwell. However, it has the smallest leaves of the three species. Ivyleaf speedwell leaves are thicker and less serrated than those of either corn or Persian speedwell. The entire corn speedwell plant is covered with soft, fine hairs. The flowers are small, bright blue with white throats, and nearly stalkless, whereas those of Persian and ivyleaf speedwell have stalks that are longer than 1 mm. The seedpods are heart-shaped in all three species.
corn speedwell
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corn speedwell
corn speedwell
corn speedwell
corn speedwell
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CharacteristicTypeDescription
Growth Season winter annual weed 
Growth Habit prostrate, spreading 
Leaflet Number one 
Leaf Margin serrated/toothedrounded teeth
Leaf Hairs upper/lower surface 
Leaf/Leaflet Shape linear/oblong OR oval/egg-shaped/elliptical OR roundlower leaves egg-shaped or round, upper leaves linear
Leaf Width 1/2 - 1 inch 
Leaf Venation palmate 
Leaf Arrangement alternate OR oppositelower leaves opposite, upper leaves alternate
Root Type fibrous 
Flower Color blue/purple