Known as one of America's most attractive native wildflowers, there has been considerable breeding work done on the genus Penstemon. 'Dark Towers' is a true testament to that with its superior form and mildew resistance, making it an improved garden selection. Lavender tubular flowers create a pleasing contrast against purple-red foliage that holds its color all summer long. Perfect for hot, dry areas of the garden.
Thrives in moist, well-drained soils and full sun. Feed yearly with an organic fertilizer. Prune spent flowers to encourage rebloom. Perfect for grouping or garden container use. Cut back to just above ground level after a hard freeze in late fall.