I have two Rhododendrons growing vigorously in ericaceous compost in pots on my patio. They will soon outgrow their pots.
I intend transplanting them into my garden but my soil is not suitable for Rhodedendrons. I intend transplanting plants into larger cheap plastic pots topping up with ericaceous compost, digging two large holes & planting plant & POT in the holes. This is to try & prevent contamination of the ericaceous compost with my alkaline garden soil. This is something I have thought up (I am a novice gardener) & have no idea whether it will work.
Any advice? Experts only please as these plants are my wife's favourite. If anything happens to them I am a dead man.
If OK what is the best time of year to do it?