I have one in my yard. It is an old fashioned Formosa Azalea.
Mother has several, very old Formosa in her yard.
It is easy to get old, over grown Azaleas back into shape. You need to prune as soon as the blooms fade. Azaleas set blooms all up and down the stems so you can prune heavily and still have blooms next year.
My Formosa is about 5' tall. It has just finished blooming. As soon as the rain stops - some time next week - I will cut it back by 1/3.
Several years ago I pruned Mother's Formosa Azaleas back from 8' to 3'. If pruned right after the bloom they do not miss a beat.
I love Azaleas.
Near New Iberia, La. there is Avery Island. It is the home of the Tobasco plant and a beautiful garden. In the spring I try to visit just to see the stunning display of Azaleas.
I am not a golf fan but I did watch bits and pieces of the Master's Golf Tournament in Augusta, GA just to see the stunning Azaleas. Do you ever wonder how they always have stunning blooms regardless of the weather? If the temperatures are high enough to push the blooms prior to the tournament the base of the shrubs are packed in ice to keep them from blooming prematurely. The horticulturalist are masters. They should get a Green Jacket.