Veronica longifolia ‘Dark Blue’ is a vigorous, long-blooming perennial prized for its striking spires of rich violet-blue flowers and upright garden presence. From early to late summer, dense flower spikes rise above attractive lance-shaped green foliage, creating a vibrant display that adds vertical interest and brilliant color to borders and cottage gardens.
The deep blue blossoms open gradually from the base of each spike upward, extending the flowering season and providing a valuable source of nectar for bees, butterflies, and other pollinators. Deadheading spent blooms often encourages additional flowering, keeping the display fresh throughout the summer months.
Growing 24–36 inches tall and about 18–24 inches wide, ‘Dark Blue’ forms a sturdy clump that blends beautifully with ornamental grasses, coneflowers, daylilies, and other sun-loving perennials. Its strong stems make it an excellent choice for cut flower arrangements, where the elegant spikes add both color and texture.
This easy-care perennial thrives in full sun and well-drained soil, performing best with regular moisture but tolerating short periods of drought once established. Hardy, reliable, and highly ornamental, Veronica longifolia ‘Dark Blue’ brings months of vivid color and pollinator activity to the summer garden.
