Plant types and subtypes: Perennials, Biennials
Light Requirements: sun, part-sun
Water Use: medium
Soil Moisture: moist, wet
Soil Description: average, loam, clay
Bloom Time: June, July, August, September, October
Bloom Color: violet, purple, blue
Leaf Color: green
Hardiness Zone: 3, 4, 5, 6, 7, 8
Additional Tags: attracts bees, attracts birds, attracts butterflies, clumping, colonizing, cottage garden plant, medicinal, naturalizing, ornamental foliage, pond margin plant, stream margin plant, wetland plant
Pricing & Availability
Verbena hastataAlso known as:
American blue vervain,
Verbena hastata is a robust plant with tall, erect stems growing typically to a height of 4' and occasionally up to 6'. The greenish, reddish stems are four-sided and often hairy. They typically branch up top, forming a candelabra of 6" long flower spikes. The individual flowers are small, 5 lobed, and tubular. they may range in color from pale blue to violet, and will bloom starting at the base of the spike moving upwards over a period of 2 months. Swamp vervain has visually interesting foliage made up of 6" long, elongated, serrated, occasionally hairy, lance-shaped leaves.
Though individual plants a short lived (biennial), they spread by rhizomes and will maintain a perennial presence. Verbena hastata is a moisture loving plant that can easily adapt to dryer garden conditions in rich, loamy soil. It is typically found in low woods, wet prairies, wet meadows and along streams. It will not tolerate standing water but can withstand irregular, seasonal inundation. Plants will perform best in full or part-sun. Swamp vervain will slowly colonize via its fibrous, rhizomatous roots, and under ideal conditions will naturalize from seed. Individual flower spikes will remain in bloom for up to 2 months, between June and October. A hardy species: zones 3-8.
Propagate from seed. Stored seeds will require a 30 day period of cold-moist stratification before sowing.
Verbena hastata flowers are attractive to nectar loving insects, while the seeds are attractive to many species of birds. Verbena is a large family that includes biennials, perennials, shrubs and trees. It owes its name to Latin meaning "sacred". It has long been considered a panacea, with medicinal applications including treatments for ulcers, acne, coughs, fevers, headaches, cramps and even depression.
Native Range & Classification
Recorded County Distribution: USDA data
AL, AR, AZ, CA, CO, CT, DC, DE, FL, GA, IA, ID, IL, IN, KS, KY, LA, MA, MD, ME, MI, MN, MO, MS, MT, NC, ND, NE, NH, NJ, NM, NV, NY, OH, OK, OR, PA, RI, SC, SD, TN, TX, UT, VA, VT, WA, WI, WV, WY
|Species||Verbena hastata||swamp verbena|