This bush is growing on my families property. In the 10 years or more that we have owned the property, no one has ever pruned, fertilized or watered this bush. It is perfectly shaped and absolutely beautiful EVERY YEAR. I would love to find one for my grandmother to plant at her place. I do intend on trying to root some cuttings or do some "layering"?, but would love to buy an established bush instead. Does anyone know the name of this azalea? Here is a view of the whole plant.
The property we bought also has bushes very much like that. They are just covered in the spring. Are the leaves on that bush very tiny, say 1/2" or so (with new growth being even smaller)? Is it evergreen? If both of those are "yes" it may be the same as ours, which is "Hino Crimson," at least tentatively identified. The color of bushes sold under that name seems to vary, but the form is similar. Maybe it's a variable variety.
This azalea could be "Purple Splendor" which would be hardy in your zone. Hopefully, you did some air layers; moist un-milled sphagnum wrapped around a branch, cover with plastic and twist tie should root out in four - five months. Take cuttings around late July to early August and they should root in 6 to 8 weeks. Beautiful plant.