Sometimes plants get out of hand and pruning for separation is required. This week I finally got a chance to separate a rhododendron and sourwood tree (Oxydendron arboreum)
The last I was at this site, the rhododendron was close to blooming so it wasn't a good time for pruning. Now, in August, I finally pruned a bit off both plants.
This often happens with shrubs which quickly shoot out and start growing into each other. So unless you have plants of the same species growing into a hedge, definitely consider pruning for separation.
See below for before an
Vas Sladek, B.Sc., CLHT