Rocky Knoll Farm
Penstemon Electric Blue
The aptly named Electric Blue penstemon shows off its intense, colorful tubular flowers as early as May and well into the summer, depending on where it is planted. This great plant is loved by hummingbirds, butterflies and bees! It prefers well-drained soils but is otherwise easy to grow. Generally reaching about 18" tall and is a great choice for borders, slopes, rock gardens, dry areas and color accents. Sun and heat tolerant, this plant is hardy to around -5° F when protected from wind chill.