Just looked it up - interesting plant with that collar surrounding the flowers. Listed for mail order by a company called Hayloft Plants in Worcestershire and Van Meuwens (Spalding). Or there's Thompson and Morgan. May well be other suppliers next year if it proves popular.

Thanks Urbanite I have just seen it on Amazon for hayloft much cheaper through Amazon.

But best is The Vernun Geranium Society so just away to order it now.