The fernies require full sun as much as possible. Some vendors leave out the part of the name of fern leaf hybrid and just call them fern leafs. The hybrid leaves should be somewhere between the very fine leaves of fernies and the much larger leaves of the standard types. All the fern leaf peonies which I have seen always have the very fine leaves, probably not more than about 1/8th inch.
Another pic of my fern leaf section after some cold nights.
