I have moved entire pots of black and blue into a cold part of the house and had them winter over that way. I have also read that you can treat them basically like Dahlias, but I haven't tried that.

I suppose you could do the cool storage thing, but I often get this plant to overwinter even with no protection.

I'm in what used to be a zone 5/6. Our winters are not what they used to be. Much warmer here now than in the past. We don't see -15 or -20 with -30 windchills any more. Not that I'm complaining!

I've had my Black and Blue Salvia for 4 years now and I do nothing to it and it keeps coming back. We do mulch every year - shredded bark - and this year I may cover it with some extra leaves just in case. I love the color of the flowers and hope it continues to return in the spring.

Linda

Oh. Darn it. I already dug them up. I'll just try to store them, then. I have one left in the ground that I'll leave and see what happens - it's next to the porch, so maybe it's warm enough there to survive with lots of mulch.

My Black and Blue has been in the ground to the south of my house since 2006. It gets no special covering other than a little mulch. One winter something had scratched he ground in that area, and I though for sure it was a goner, but it came back, not as strongly that year, but it survived, and has looked good ever since. The ground there probably stays a little warmer than out in the open here, but I would say it is still pretty tough.
Remy

I overwintered 2 pots of Salvia B&B last winter in the garage. It worked extremely well! I forgot about them and don't remember watering them all winter, regardless, they did fine. I think I watered them when they started to send shoots up in March or so - it was much earlier than they normally would outside.

I would have potted more for the winter, except the voles ate the other three! I bought 3 more this past spring, and when I planted them in the Spring, I put wire cages made out of hardware cloth around the roots. They did great this summer and I'm going to dig up all 5 of them this fall.

I have some in pots that go in the basement. Others I dug and threw in a bag and put in the basement -they came through too. I havent had them overwinter in the ground here in Z6b. Ill try mulching though.