The double reds are divisions from one given to my wife by her grandmother about 30 years ago. The single reds were from Spring Hill mail order probably 10 years ago. The last single, a species single red, came from Hidden Springs Flower Farm and the species double I have on order is from that same place. The bad news is they are scarce and are sold out almost immediately after the catalog is posted online. I put my request in for one a year early. Expect to pay nearly $50 for one if you can find any offered by reputable nurseries. I think a lot of the advertised fern leaf peonies on the market are hybrids of fern leaf and another type.
http://www.hiddenspringsflower...