 | Rose Vervain (Verbena canadensis). Description: Hardy, herbaceous perennial - Bears rich, deep purple clusters of flowers from spring until frost; deep green, scalloped foliage is semi-evergreen Habit: Low, spreading ground-cover 6"-12" high and 2'-3' wide Culture: Prefers full sun to light shade and well-drained soil; keep moist until established; leave foliage on plant over winter and tidy in spring; cut back spent flowers to encourage re-bloom Hardiness: Cold hardy to USDA Zone 6 Origin: North America... - Rose Vervain (Verbena canadensis). |
