Woops spelled the name wrong it's Subrotunda I keep doing that but when I first got the seeds it looked like an 'o' and keep doing it lol Those aren't a perennial for us Terese hardy zone only goes to 9 and mine have never reseeded you might get one to reseed let me know if you do:
http://davesgarden.com/guides/...
If you want more seeds to the Suvrotunda I think I have a few I just planted some the other day and pretty sure I had some seeds left.
I want my VB to reseed so bad and it won't I need more compost in this darn clay soil that I have I keep working on it! I have babies going now down stairs and four B&B babies so far