Elfie, thank you for post this beautiful photo. I knew nothing about this plant, never heard of it, until I saw your photo. Was it taken in your garden? Can you tell me anything more about this plant. Like how fast does it grow? Can it be invasive?

Thanks - this was taken in my garden. A gardening friend who has it covering a large area around some shrubs in her front yard has it as a ground cover. She gave me some cuttings; and now I have it. It does spread; but not invasive. Those are the full flowers; they don't open anymore than that and last for months and months. I believe the origin of the plant came from an island off Japan.

Thank you for the information Elfie.