Can anyone identify the problem I have with small rhododendrons or azaleas( I don’t know which!)please?
Nearly all the leaves are black at the ends,even new growth coming from the bottom. I have recently mulched them with mushroom compost as I wonder if it is lack of water?
I will feed them with rhododendron food and make sure I keep them well watered too for the rest of the year but I am not sure if I should remove blackened leaves or cut the plant right down as well?
Any thoughts much appreciated.