Black-eyed Susan vines
I adore them. I also have some hanging boxes on my patio that would be perfect for them. However, I tried to start them last year in peat pots on my windowsill and all I got was a couple of sprouts about five inches tall. They never went anywhere.
I haven't seen them in my local nurseries (except as huge $25 hanging baskets that I can't afford for a one-season plant) so I'd be starting them from seed. I'm willing to start them in the house. I have a south-facing window, but a very gloomy Pacific NW climate. Not willing to do a fancy light setup (I wintersow most of my seeds, but I understand these don't take to that). The house is kept fairly cool. Is that my problem?