Black Lightning grows quite well. It gets a little tall for an SDB but we have it in a bed which get shaded. It doesn't rebloom here, but it does at Superstition gardens so much that they have trouble digging it for sale as bloomstalks keep appearing. I am well acquainted with Chuck & we have been in an international 'paper robin'. I must get a photo of the clump. The photo of the flower is Chuck's. He ships in Aug. & accompanies his shipments across the border so it doesn't get hung up.