The strange thing about my doubles is they are not as tall as the advertised size of 24 inches or so. Mine have never been more than 12-14 inches at bloom time and they do not continue to grow after blooming. They are about the same size as my singles which is contrary to the size given by the experts. I will be moving one of my small clumps due to my planting it in morning shade which is not recommended. This year the blossom buds had a black color on the outside indicating they may have been hit with a late frost which the ones in the sun did not get.
Depending upon how it divides, I would send a sample to you if you would want one. The original was given to my wife 30 years ago from her grandmother who was a German immigrant. Hard to say what it really is or how important it is. I have a species double on order from HSFF for comparison later. The species single bloomed and added a couple of stems after its seconf growing year.
