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

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.

A variegated veronica with spikes of white flowers.

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

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

Veronica 'Reavis' Crystal River has abundant blue flowers with white centres in spring with scattered rebloom.

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

Veronica 'Snowmass' is a delicate yet vigorous creeping speedwell producing masses of pure white flowers with blue eyes

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.

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 chaerophylloides 'Benizuru' has dissected leaves with fragrant, magenta and white flowers on red stems.

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

Viola pedata 'Eco Artist Palette' is a bird foot violet with bi-coloured flowers in lilac-blue and purple atop dissected foliage.

Viola pedata is a lovely little violet with very cool, dissected foliage that looks like a bird's foot.

Viola walteri 'Silver Gem' is a fantastic trailing, ground-covering violet with silver foliage and reblooming purple flowers.

Viola Starry Night gives us fragrant, dusky lavender blossoms with a yellow centre.

Viola x wittrockiana 'Bunny Ears' has unusual petals that resemble bunny ears in shades of pink, magenta, yellow, and white.