I call it Chinese Indigo. It loves the heat here in 8b. Had it growing in the courtyard, but it spreads like crazy. Dug it out last year.

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Here is a link that might be useful: Indigofera

I bought this plant under the name Ground Cover Wisteria.
Natal, yours is/was beautiful. Mine's not near that pretty. How old was yours in the picture you posted?

Msflora, it was only a year old in that pic taken 4/30/10. A few months later I was pulling up runners left and right. That area gets sun early morning until about 11 am. I have some growing in a much more shaded area and it rarely blooms.