I'm in Austin and I'm growing it this year for the first time. I started it from seed that I bought from Harris Seeds: http://www.harrisseeds.com/storefront/p-1030-trachelium-pandora-pltd.aspx

It's been doing really well and is still blooming. I think I've seen it in photos from roselee, too.

I have it where it gets sun from morning until about noon and then it gets dappled shade after that.

Where has this plant been all my life? It's a very nice plant.

I'm not in Dallas, but as briaustex says I've been growing it since last year when I bought a plant at the San Antonio Botanical Garden plant sale.

About three weeks ago I snapped off the old blooms and it started a whole new bloom cycle and looks great. I cleared the area around it of mulch so I'm hoping some more plants will come up from seed.

I didn't recognize the common name of blue throatwort. The botanical gardens called it purple umbrella plant..

I grow it in about the same conditions as described above.

Here is a link that might be useful: Harris Seed link ...

Thanks braiustex and rose lee, I am goint to put it on my seed order for next year, as pretty as it is, I don't see why nurseries don't sell it.
I am not really very good at growing from seed unless I can sow direct. I think I'll buy double the seed and start some inside and others in the ground. I appreciate the replies and advice.

Someone said the only problem with it is that it needed a fanciful name to be remembered by.