Hi I have 4 rhododendrons planted in my back garden across probably about 25 foot, this part of the garden has bark on it and a rockery around it so has mainly been for flowers, the rhododendrons were already there when I moved in 6 years ago and are very established also there is 2 rose bushes, I planted 6 years ago a Magnolia which was in bloom when I bought it but has never flowered in 6 years, the leaves come out every year, not sure if it is growing in height though, I don't know if they grow quickly or slowly over a longer time. Any help very much appreciated. thanks