Otherwise, rhododendrons require very little pruning unless branches are dead or injured. If you have older shrubs that have grown spindly, you can rejuvenate them by heavy pruning. The best time to ...

Rhododendrons require very little fertilizer if soil conditions are appropriate. Use a soil test to be sure the pH is acidic and, if needed, use a complete fertilizer such as 12-4-8 NPK.

Learn the best times and proper techniques for fertilizing azaleas for healthy growth and vibrant blooms. In the botanical world, all azaleas are rhododendrons (Rhododendron spp) but not all ...