Slender pale pink flower spikes lift Veronicastrum virginicum Challenger above neat whorls of dark green leaves, bringing clear summer height to moist borders. Its strong, upright clumps stay relatively compact while the flowers attract bees and other pollinators.
Grow it in full sun or partial shade in fertile soil that stays evenly moist. Cut the dry stems to ground level at the end of winter. The root is potentially toxic if eaten, so keep it out of reach.