I don't know if there are any salvias that will bloom well if they're in really deep shade, the ones on this list will tolerate some shade, but since they're shade-tolerant not shade-loving, I think if you have them in really deep shade they won't be happy (I have several plants from the above list growing in full sun and they're perfectly happy--can't imagine them enjoying anything more than partial shade). As far as zones, I think you'll have to look each one up individually, I'm sure some of these are hardier than others. But for you in 9b most salvias are going to be fine at least from the standpoint of winter cold
I did have S.cacaliifolia. It was happy with 1-3 hours of fairly direct sun, but several hours more of bright reflected light... it was in a north-south 10' (3 meter) "aisle" between two houses. However, most of what is planted in that "aisle" are plants normally associated with sun...
It is (or was in that situation) a mounding-sprawler, and eventually we got tired of whacking it back with the machete...
I think I gave several pieces of it away at last year's SoCal RU -- don't know how any of it did after that, though.
The pic is shortly after the plant(s) had been chopped to about 18" -- which we did at least 3 times a year for several years -- in between it would drape its way to the top of that 5' fence.
'spin, That's good to know. Our sun has gotten so brutal anymore that I'm moving more and more plants into partial shade and I wondered if cacaliifolia would even take that much direct sun. I'll have to rethink it's positioning.
Many plants that say full sun in the rest of the country do better in partial shade here in texas. The summer is so brutal here with the unrelenting heat. I think the main cause is that often it doesn't get below 80 until midnight or later. The plants never get a chance to rest, they are always under stress..That's one reason I'm planting more and more Salvias. Another is we have rabbits that visit and they apparently do not care for the taste of Salvias.
Salvia Greggii is one that seems to do well wherever I put it. But I'm having fun finding and trying others.I tried an Agastache last year but the leaves looked washed out. I'm waiting to see if it returns this spring.nancy
teacup, 'Indigo Spires' does beautifully down here with great fragrance...they are happiest with morning sun and no afternoon sun..or dappled shade during the day...they reliably come back from the roots early...mine are about 12" tall right now...
I routinely plant "Dwarf Red Salvia" along my north facing front porch to accent the red front door of the house, That area never receives direct sun, but the plants don't seem to mind, they flourish even. Sorry I don't know the latin name. I usually buy them from the local mega-mart, as I need four flats to fill the area, and my growspace is reserved for peppers and tomatoes.