rhododendron

Our Rhododendron (of which we have several) are not looking to happy, they have a lot of yellowing leaves, I know some die off each year but it looks more than usual this year. We had a very dry summer as lots of you did so I wonder if it was lack of water in the summer or something worse. :(

 

Hi Birdy
I have three large Rhodo's in half barrels. the leaves turn yellow after flowering dry up and fall off. If I see any of the other leaves starting to lose their colour which they sometimes do I give them a bucketful of water with about an eggcupful of (Seeweed plus Sequestered Iron) added every fortnight. Each month I make up a weaker solution and spray the bush. In no time the leaves are a lovely dark green again. Ericacious plant food also helps but it is a bit late now to feed.