Finding large rhododenrons/azaleas
I'm looking for rhodies or azaleas that will grow larger than six feet--more like 10+ is what I have in mind. Most nurseries specify "tall" plants as being about six feet. I used to have a 20 ft rhodie at my previous home. What species do I need to look for? I would prefer white or purple blossoms, but will settle for pink. Can someone tell me how to search for and find what I'm seeking? Thank you.