The 'Purple Cow' is a mid-sized variety that produces large clusters of purple blooms that will persist through the summer. It will reach 6-10' tall and 4-5' wide at maturity.
The 'PJM Compact' is a hardy rhododendron with lavender-pink flowers that blooms in early spring. In the fall-winter the foliage turns a deep amber color. Compact, mounding habit. Reaches 3-4' tall and wide.