May 05, Azaleas will grow new branches from right below wherever you cut. Pruning to Rejuvenate. If you are pruning an azalea in order to rejuvenate the plant because it’s become spindly or sparse, locate three to five of the largest branches on the azalea bush.
Cut these branches back by a third to a half. An azalea can become overgrown and leggy, and although rejuvenating pruning is beneficial, drastic measures, such as cutting the shrub down to 6 inches above the ground, can kill it.
If new growth emerges from the 6-inch-tall branch, then you'll know the azalea can withstand severe cutting back. When pruning azaleas to reduce height, particularly older plants, it is best to do the pruning in stages, to minimize the shock to the plant. Before you start to prune, look at the plant you intend to work on, remembering that the branches which are shaded out often die back and become dead wood stumpcutter.buzzted Reading Time: 2 mins.
Jun 03, If you’re not sure how to prune azaleas, you can certainly trim here and there to shape them up. But what if your poor plant, like mine, needs a complete overhaul? Unlike other flowering plants, such as the hydrangea, azaleas don’t need yearly cutting back. Dec 17, A possibility is to cut back one of the shrub's main branches to 6 inches tall and cut its two other main branches to 2 feet tall.