"The Penstemon æPrairie DuskÆ, Penstemon barbatus, has tall vivid purple tubular blooms and dark green leathery foliage. Blooming in early summer, it has a plant height of 30ö and a spread of 12-18ö. The foliage on æPrairie DuskÆ is beautiful all year long. It is best to plant Penstemon in a full sun location, having a moist, well-drained area. Being drought tolerant, æPrairie DuskÆ looks great in a perennial border, in a naturalized setting or for cuttings. Hummingbirds and butterflies love this perennial, not to mention being deer resistant."