This is a semi-tropical plant native to Mexico down through Central America and Caribbean Islands, but here in zone 8 and it is in the Verbena family, Verbenaceae. Here in zone 8 is had proven dependably ground hardy if one mulches its base. This spectacular selection was found by plantsman Barry Yinger at a small village plant fair in Japan. It is the custom in many towns to have plant "festivals" a couple times a year where growers and gardeners alike bring plants and many other artifacts to sell. The main street in town will be shut down for a day or two for the festival. This was offered by a homeowner where they had found it as a sport. There are many small consignment nurseries that offer spaces for locals to sell their plants. I have found some of my best "finds" at these places. This selection has a picoteed white margin around a violet flowers. Really nice. Best in full sun. If you are in an area too cold to over-winter it outside, just plant it in a pot and move it in for the winter. It will survive in some of the poorest soils. The first picture is courtesy of Mike Chelednik.