DRAGONFLY DAWN did fine here this past winter. I do believe it made it through the winter in Vermont as well (@Aroseblush correct me if I am wrong).
I did not have WAVES OF JOY outside but I did have seedlings from DD X WOJ that were in a pot and experienced temps way below 0 with no mulch and they perked right back up when brought inside to get them growing in mid March.
