Verbena hastata - Blue vervain
Verbena hastata is a wildflower that commonly is found in wetter meadows, stream banks and ditches. It is a clump-forming perennial that grows about 2 feet tall, and then has 2 foot tall, branching flowering stems. Flowers are purplish-blue and appear over a long-bloom period.
Height: 3-6 ft
Water: Medium to wet
Bloom color: Purplish-blue
Bloom time: July, August, September