'Celestial Blue' has a unique flower pattern  with blue on red flowers that are loved by many hummingbird  insect  and butterfly species  including Swallowtails. The leaves are a gray green in color and provide a fragrant aroma. This shrub averages 3 to 5 feet in size and mounds as it grows. Flowers are abundant in spring and late fall.  Introduced by Las Pilitas Nursery  this hybrid resulted from a cross of several species.