This is Penstemon digitalis,also known as Mississippi penstemon, Mississippi beardtongue, Smooth white penstemon, Smooth white beardtongue, Talus slope penstemon, Talus slope beardtongue, Foxglove penstemon, Foxglove beardtongue. Growing up to 5 feet tall this plant likes to live in full sun. This plant attracts hummingbirds and butterflies. This plant is a larval host for the Baltimore Checkerspot, Chalcedon Checkerspot, Dotted Checkerspot, Arachne Checkerspot, and Ediths Checkerspot butterflies. USDA Hardiness Zones 4 to 8