Narrow-leaf vervain is believed to be extirpated in Connecticut, though it is more common farther west. The photographs show cultivated plants.
- Family: vervain (Verbenaceae)
- Habitat: dry fields
- Height: 1-2 feet
- Flower size: 1/8 inch wide
- Flower color: blue-purple
- Flowering time: May to September
- Origin: native
Photographed in Philadelphia, Pennsylvania in mid-July.
Photographed in the New England Wild Flower Society's Garden-in-the-Woods.