This is a widely distributed cultivar of Asarum maximum named 'Ling Ling'. I have two accessions of this species; the other one was mentioned in this post:
Here they are grown in cold frames, but I've seen them in other local gardens out in the open.
If the only asarums you know are the local Asarum canadense or the garden forms of A. europaeum, you will probably want Asarum maximum the first time you see it. The striking color combination is fetching enough, but the size of the flowers is what really does it. And the foliage of this species is evergreen.