Rock Penstemon grows in a clumping form. It is one of the best attractors of hummingbirds. Canopy coverage: 7 square feet.
Water Requirement: low
Sun Exposure: partial shade, full sun
Cold Hardiness: cold hardy to 15F
Growth Rate: fast
Height: 2 feet high
Width: 3 feet wide
Evergreen
Foliage Color: dark green
Flower Color: red, pink
Flower Season: spring, summer
Wildlife: hummingbirds, butterflies