Why are my rhododendrons´ leaves turning yellow and falling?
Certified GKH Gardening Expert
There are several reasons why a plant gets yellow leaves. Typically it is a water or fertilizer issue. Make sure that it is getting the right amount of water and is fertilized (especially with iron) is a first step. This article will help: https://www.gardeningknowhow.com/plant-problems/environmental/plant-leaves-turn-yellow.htm