Although it's supposed to be an "annual", I've had a flower box of these plants growing inside my house since Spring 2010. The following link will show what the plant with flowers looks like http://www.gardensandplants.com/uk/plant.aspx?plant_id=496 The flowers sure make for a cheerful, Winter day.
Copyrighted Image. DO NOT DOWNLOAD, copy, reproduce, or use in any way without written permission from Elizabeth Bickel.