Posted: 20/05/2016 at 08:54
It's odd, isn't it?
Every plant I have bought of Ravenswing has only lasted one season, yet self set ones , seem to last . I have one in an awkward place under the magnolia, that has bronze leaves, certainly not as dark as ravenswing, it is now in its third year. Maybe the roots don't like being moved?
I will try with scattering seed where I want it to be, although slugs get most of them that way.