Last winter I acquired a lot of seeds for eastern US native azaleas. I had to join 3 different azalea and native plant societies so I could buy from their members-only exchanges. It's tricky getting them started. You have to sow them on the surface of finely milled sphagnum moss, grow under lights, fight off fungal infections and eventually transplant the babies. The ones that survived I potted up and moved to the basement for the winter. They are growing like gangbusters. In May I'll move them to a protected spot under the apple tree for the summer.