Blue vervain grows stiff and upright from 2-3 feet tall and is found in moist fields, meadows, and waste places. Plants sprout or germinate in the spring, flower in late summer, and die back in winter.
The leaves are serrate and lanceolate and borne on short stalks. Leaves are oppositely arranged on square stems. Both leaves and stems are covered in stiff hairs giving the plant a rough feel.
Blue vervain is identified by its pale-lilac flowers, square stems, and its 2-3 feet tall stems.
Flower Seed Head:
<p>The flowers are small vary in color from white to purple, blue, pink, or rose.† They have 5 petals and that arranged on long numerous spikes in a panicle.† The flowers bloom from June to September.</p>
<br />Seed pods are hairy, long, and oval shaped.
Commonly occurs in wet meadows, damp river bottomlands, stream banks, slough peripheries, and fields and waste areas.