The best times to plant azaleas are the early spring and early fall. Planting in the spring when they are in bloom allows you to lay out a color scheme more easily, while early fall planting allows the azaleas to become more established before the hot summer weather arrives.
Azaleas can be planted at any time of year if they are provided with the proper amount of water. Azaleas have shallow roots and need sufficient water to become established. Plant azaleas in filtered shade, such as under pine trees, in humus-rich, well-draining soil with a pH of 5.5 to 6.0.