Verbena bonariensis is a summer stalwart with masses of lilac purple flowers on tall, see-through stems from midsummer until hard frost.

Verbena bonariensis 'Cloud 8' is a semi-dwarf selection of this summer stalwart with vivid purple flowers.

Verbena 'Homestead Purple' is a vigorous, trailing vervain with lavender-magenta flowers from May until fall.

Verbena 'Homestead Red' is vigorous and trailing with clusters of bright red flowers all summer long.

Verbena stricta offers beautiful spikes of densely-packed lavender flowers from early summer to fall.

Vernonia angustifolia 'Plum Peachy' is a prairie ironweed topped with clusters of nectar-rich purple flowers on tall stems.

Vernonia 'Mammuth' is topped with clusters of warm purple flowers on tall stems in late summer and fall that attract butterflies.

Vernonia gigantea or giant ironweed makes an impressive specimen at 8-10 feet tall topped with fluffy, warm purple flowers popular with butterflies.

Vernonia 'Iron Butterfly' has feathery foliage topped with clusters of warm purple flowers in late summer and fall.

Spreading mats of variegated foliage with spires of pale blue flowers.

Veronica liwanensis has tiny, glossy, oval leaves that form a neat evergreen mat and cobalt blue flowers with a white central eye.

Veronica 'Goldwell' produces darling blue flowers with white eyes and lush groundcovering foliage.

Veronica incana 'Pure Silver' has gorgeous silver foliage and spires of royal purple flowers offering twice the interest of other speedwells.

Veronica 'Aspire' has short spires of glowing, deep rose flowers on this excellent Veronica.

Veronica 'Blue Skywalker' is a long blooming spike speedwell with a narrow form and tall flower spikes of lavender-blue.

Veronica 'Perfectly Picasso' is a long-blooming spike speedwell with spikes of white buds opening to pink flowers.

Veronicastrum virginicum is a dramatic perennial that blooms like a white candelabra atop six foot stems.

Veronicastrum virginicum 'Adoration' is a Culver's root with architectural pink blooms on 5 foot candelabras.

Veronicastrum virginicum 'Album' has white candelabras held aloft on tall stems with whorls of architectural foliage.

Veronicastrum virginicum 'Challenger' is a Culver's root with architectural pale pink blooms on tall rigid stems.

Veronicastrum virginicum 'Cupid' is a Culver's root with architectural lilac-blue blooms on tall rigid stems.

Veronica 'Tidal Pool' has darling blue flowers with white eyes and lush ground covering foliage.

Viburnum edule, the highbush cranberry, offers tart red berries that make delicious jellies and pies.

Viola blanda is a darling violet with heart shaped leaves and fragrant, pure white flowers with deep purple veins on the lower petal.

Viola corsica, the Corsican violet, offers masses of violet-blue flowers with purple whiskers and tiny yellow centres.