More than likely it might just be another marketing name.

This happened awhile back with S. guaranitica. People were buying this 'new' S. guaranitica and finding out it looked exactly like the one they already had in their garden.

S. lyrata is from the SE USA.

I have S. lyrata 'Burgundy Bliss' which looks just like photos of S. lyrata 'Purple Knockout' and 'Purple Volcano'. It seeds around for me but not too badly. It will set seed without forming flowers for me also. The flowers are pale pink or white. The beauty of this one is in the foliage.

I prefer the species with green leaves with the burgundy veins. It has sky blue flowers. This one seeds around also.
I have heard this one refered to as 'Puple knockout' also.
Go figure!

Good Luck!
SG

Wow, thanks, SG! You know, I was wondering why I could see seed inside, yet not a flower in sight. I've also read that the flowers appear unflowerlike, more like tiny pods, green with a tinge of red. I also read that it prefers a more moist soil, rather than dry.

I would love to have the sky blue flowering one, as well (with those beautiful leaves!). I'll keep an eye out for that one; the flowers I've seen in Google images are gorgeous.

Thanks again for your help!

Brenda

I grow the purple volcano.Me & SIL both bought one.Hers seems to do better than mine.Hers has triped in size& blooms alot.I have one similar to it with green leaves that gets blue flowers a real pretty pale color,but only blooms in spring.the foliage stays evergreen.does well in shade as well I have some in shade bed.I always spread the seeds though.