These 'popped' up in my garden a couple of years ago, and, despite all my attempts at sowing seeds, have failed to reappear. My garden is like that. Stuff only lasts one year. I think the soil gets too cold and wet in the winter and it all rots away, or gets eaten.
Glad I spent a day catching them in their flowery redness.
Experimented with the background on this one.
And, come to think of it, have no idea where the original is !!!