Penstemon digitalis 'Blackbeard' PP30052Herbaceous perennial with clean, glossy,purple foliage on a basal clump producing very tall 3' flower spikes adorned with dozens of 1" lavender tubular flowers. Blooms spring and summer. Attractive to hummingbirds. Give good drainage and average water. Easy to grow. USDA cold hardiness to zones 4-9.