A tall Vervain that prefers moist sites, with numerous clusters composed of long and narrow flowered spikes that have been compared with candelabra branches. The small bluish-purple flowers are opening gradually, so it will flower from mid-summer until late fall. It is perennial but short-lived, often it will re-seed, acting like a biennial.
A superb plant with the same see-through qualities like Verbena bonariensis but appropriate for the moist situations of the garden, around the pond edges, streams; naturalized areas. It is foraged by countless pollinators and is almost impossible to take a picture without including at least one!
Also it is a larval host for the Common buckeye butterfly. It has been used as a medicinal plant for ailments like: headaches, depression, coughs and fevers.
Germination: with cold-moist stratification for about a 1 month; seeds are very fine and need light for germination.