9b- when first planted I loved it but eventually every one of them dwindled to a single sickly stalk and eventually disappeared. Would not buy again.

Did the sages reseed themselves - pop up elsewhere?

Mine never reseeded, it would bloom really nice in the fall and the rest of the time it was leggy and not very attractive, I probably should have kept trimming it through the Summer but I didn't.

Irma, mine never reseeded either. I thought it did not like the rain and humidity during summer. I've decided to only keep plants that don't take a whole lot of attention. Occasional water and feeding is OK but they must like my long hot summer, drenching rains, and poor soil. that limits what does well here.

Mine died out too

Mine always spread like wildfire in SW FL. I haven't tried one up here. I don't think they have seeds. I grew mine from cuttings. I had the solid purple, but I always wanted the lavender and white one. They have pure white now, which I'd love to have too.