Can anyone help me to find where I can buy a clematis called Gwendolin? I know it exists because I've seen it described on the University of Hull website thru' Googling, but they cannot list suppliers and I'm not having much luck on't t'internet so far! I want it for a birthday present for my BIL who lost his Mum of that name last year, a kind of memorial thingy. Any suggestions gratefuly received.. Have been o a couple of local garden centres to ask but no luck yet.