Rhododendron Festival May 27-June 4 (Cape Cod) May 17, 2017October 24, 2019 ~ Joan O'Brien If you’ll be in the Cape Cod vicinity end of May/early June, you can go see a wonderful collection of rhododendrons in bloom at the Heritage Museums & Gardens. Share this:TwitterFacebookEmailPrintLike this:Like Loading... Related Published by Joan O'Brien View all posts by Joan O'Brien