When is the correct time to prune rhododendrons? - Cooperative Extension: Garden and Yard - University of Maine Cooperative Extension

Question: I have a large healthy and very overgrown rhododendron in front of the house. I will be pruning about 1/3 of the plant. I am seeing some sites that advise pruning in late winter when the plant is dormant and other sites that advise pruning right after blooming in the spring. What do you read more