Crittergarden, I'm not sure now where I got my seeds -- Pinetree maybe? But anyway, here's a link to it on the Burpee site:
http://www.burpee.com/flowers/...
They claim that it grows 6" tall and mine are more like 12" (In flower boxes on the south side of our house), but that might be because I have those boxes pretty crammed with plants
The hummers also use my bleeding hearts (Dicentra) in the spring.