QuestionsHow to growTrees and ShrubsFeedingSick azalea 0 Vote Up Vote Down christina mc donnell asked 15 years ago I have got an Azalea Augustinia, about ten years old. it has always been leggy and only flowered in the last couple of years, this year poorly. Can I prune it back into old wood in the hope of rejuvenating it.? And how should I feed it ? 1 Answers 0 Vote Up Vote Down Gerry Daly Staff answered 7 years ago Better to feed Rhododendron augustinii by mulching with lots of leaf mould. and a light shake of fertiliser. It tends to be tall and will grow back after pruning.