Penstemon digitalis (Beardtongue)
Penstemon digitalis (Beardtongue) is native to the Eastern and Southeastern United States. It is ideal for the wild, native, or naturalized garden, and its showy white, two-lipped tubular flowers are perfect for cutting and are enticing to birds and butterflies. This clump-forming native grows from three to five feet tall in average soil and in full sun. Something interesting to note: Penstemon, in Greek, means 5 stamens (four fertile, one sterile). The reason why Penstemon's common name is "Beardtongue" is because the sterile stamen has a tuft of small hairs. Source: www.missouribotanicalgarden.org. Zones 2-9. Quarts.