Agastache 'Rupestris'

Agastache 'Rupestris' , got three plants from Bluestone Perennials in 2003, only one survived to 2004. They mailed replacements and now the two new ones are alive but the older one is dead. I'm not sure if I should ask for a replacement for that now. It just might be short lived perennials.Red Salvia blooms to the right, this one is a beautiful thug, I've pulled hundreds of seedlings from everywhere, even cracks in the driveway.
Now I remember, I've never had much luck with Agastaches, bought one at the plant sale two years ago, I think 'desert sunrise' and it did not survive the winter. Another one, bought four years ago met the same fate. So, maybe I should give up but they are so pretty and the leaves smell so good!