Rhododendron - syn Azalea is an evergreen flowering plant that belongs to the heath family / Ericaceae . There are more than 1000 species of rhododendron, densely branched it can grow to in height. It can be an invasive species in the UK.
Deep purples look lovely in beds, especially when contrasted with perennials in yellow/gold and pink (such as these crepe myrtles). Always add a touch of white, says Danna Cain, a garden designer and co-owner of Home & Garden Design in Atlanta.