How far back can you trim azaleas and when is the best time?

Within 12 inches (30.48 centimeters) of the ground within three weeks of the time that spring or early summer blooms discolor and shrivel describes how far back azaleas can be trimmed and the best time to do so. Maintenance pruning for minimal or moderate shaping is carried out with hand pruners. Extreme, severe pruning is done with hand saws or with loppers and followed up with a slow-release 12-6-6 fertilizer.