Why have my old rhododendrons reverted to ponticum (wild rhododendron)?
In the early days of propagation of rhododendrons, grafting rhododendrons onto R.ponticum was common practice. It was found to be a bad choice because it sends up numerous suckers. If these are not cut off, the R.ponticum will eventually take over. Loder Plants have never grafted onto ponticum and very few are grafted at all (with the exception of rare species) but we occasionally source plants which we have been disappointed to find are still grafted on to R. ponticum.