Rhododendrons look best when planted in large beds with other rhododendrons, azaleas and suitable companion plants. A backdrop of evergreens in the distance will provide shelter and a compatible setting.
Companion plants include:
Trees: Oaks, Magnolias, Japanese Maples, Styrax, Stewartias, Birch and Dogwoods.
Evergreens: Pines, Dwarf Conifers, all Broadleaf Evergreens.
Perennials: Hostas, Heucheras, Woodland plants, and many more that appreciate similar conditions.