When I first purchased Scatterbrain, I purchased it as Vanilla Fluff. I found out later that I actually had Scatterbrain. It is fertile and I have used it as well for hybridizing. It does not increase well in my zone but is planted fairly closely to several other daylilies. I also like the height and size of the flowers. It has always produced double blooms for me, never single. I do intend on hanging on to this one.