The trailing variety of petunia- the surfina is growing in troughs hanging from the front railings.
..and I need help here. I know the name of this fairly common flower, but as usual, I've had a "senior moment", one of many, and I just cannot recall what it is. They bloomed spectacularly, in pots, last year and come in a variety of colours and sizes. I just remember that it is a common, well known name!
P.S. ..of course it is................A Begonia (this is the double variety)!!! Thanks for the help.