Flowering Blue Vervain Garden Plants
Blue vervain garden plants are often seen growing in moist, grassy yards and roadsides where it brightens the landscape with spiky, bluish-purple blooms from midsummer to early autumn. Blue vervain garden plants are flowering perennial plants native to the United States and parts of Canada. The plant’s Latin name is Verbena hastata, which means “sacred herb” and “halberd-shaped,” referring to the shape of the basal leaves. The herb is a member of the family Verbenaceae, also known as the Verbena family, which contains numerous aromatic herbs that produce spikes or clusters of flowers. Each plant can reach up to 4 feet (1.2 meters) in height, and produces long, stalked leaves that are rough to the touch and tapered toward the tip. The square stem branches out above the foliage and bears 12 or more flower stalks per plant in summer through fall.
The blue, tubular flowers are about 1/8 inch (3 millimeters) wide with five small lobes. Blue vervain flowers are insect-pollinated and rich in nectar. These garden plants attract honeybees and bumblebees, which are the plant’s primary pollinators. The flowers die back in late fall, but the stalk often remains throughout winter to disperse seed. In late summer, small red buds appear just below the soil’s surface, and new stalks grow from the buds the following year.