I'm trying to find the name of a plant that I planted last year. I got it from a local nursery but can't remember the name. It had silvery green leaves 2"x1". It grew 4'high by 4' wide. It produced a light purple flower, with petals, about 1.5" in diameter.

It could not tolerate a 25F freeze. It grew well in partial shade and flowered mid to late summer through the late fall.

It was not a Princess plant. Not a mexican sage, ?texas sage. It had leaves like a sage in color.

Any ideas?

chris