RHODODENDRON KEISKEI Extremely variable, native to Japan, and, like many plants from that region, it is well-suited to cultivation in East Coast gardens. The pale yellow flowers of the larger growing forms shine in the woodland garden, while a diminutive selection known as ‘Yaku Fairy’, from the mountainous island of Yaku Shima, is the perfect dwarf for a rock or trough garden.
 RHODODENDRON DAVIDSONIANUM Vigorous and bushy, native to Sichuan, China, extremely floriferous. Does not require the removal of spent-flower trusses—known as deadheading. Lovely flowers range in color from pale pink to lavender or mauve, often with dark red spots. Hardy to about 0 degrees.
 RHODODENDRON ORBICULARE Always attracts attention with its smooth round leaves and rose-to-pink bell-shaped flowers. Best in light shade to maintain the mounding habit and avoid foliage scorch. Hardy to -5 degrees in maritime climates.
 RHODODENDRON RUPICOLA One of the best of the dwarf or “alpine” rhododendrons for the rock garden. Easily grown in a sunny location with excellent drainage, this species forms a dense mound to 3 feet with striking blue-purple to reddish-purple flowers. Native to southwest China. Hardy to -15 degrees.