All those who said 'mallow' are right.
Here's a link put up by Nettie on one of the threads in Chat forum . . .
http://www.malvaceae.info/Genera/Lavatera/galleryS.html - and -
here's something at e-how that tells me how to look after it . . .
http://www.ehow.com/how_6758_grow-annual-mallow.html An annual - Aw! Phooey!
But there's an upside - it blooms for much longer than other mallows.
You take the
seeds in (which I've been doing),
plant them in peat pots in late winter, then put them in the garden when all danger of frost has passed.
Thanks to all here for helping out, and to Netty who found that link.