Rhododendron, Purple Gem RhododendronPurple Gem Rhododendron is a dwarf mounding evergreen shrub with dense, glossy dark green foliage that emerges blue green and earns copper tones in winter. Clusters of clear violet flowers bloom from mid to late spring. A very versatile plant that prefers partial sun, particularly in hot climates, with rich, well drained acidic soils. Type: Shrub Height: 2' 3' Spread: 3 4 Spacing: 3 USDA Hardiness Zone: 5 8 Culture: Full Sun, Part Sun Bloom Color: