I'll get busy and look it up and let you know.
The low temperature- heavy frost 'burned' them pretty badly this year (along with the old fashioned bleeding hearts, some of the Euphorbias, and a Persicaria which didn't impress me as a tender kind of a plant). In other years the would have had some protection from the spruce that was growing over them.
I'll have to make a note to watch them for future transplant consideration.
