Certified GKH Gardening Expert
Their root systems are not too extensive and transplanting can be done successfully with proper care. While it is generally best to do this in fall, you can also transplant the shrubs in spring as long as the weather where you are is not too hot. Just make sure to dig up as much of the root system as possible and place it in a suitable location. Also, water the azalea well after transplanting. It may help to trim the shrub back too, though this may reduce blooming next season but will help reduce the chance of shock.