Dark Towers beardtongue brings lasting contrast to sunny borders with narrow leaves strongly flushed deep red-purple and rigid leafy stems carrying loose racemes of tubular pale pink flowers. The bushy clumps bloom from late spring into summer and can continue longer in favorable conditions. Grow it in fertile, well-drained soil, avoiding wet winter conditions. Its flowers attract bees, butterflies, and hummingbirds, while deer generally avoid the foliage. Regular deadheading can extend the display, and the dark foliage remains ornamental after the main flush of bloom.