In colder climates (zones 7 and colder), tender salvias for example Salvia guaranitica and Salvia leucantha should be cut back in the fall to prevent damage. In warmer climates (zones 8 and above ...
Take, for example, Salvia x guaranitica "Black and Blue," anise-scented sage. Imagine deep sapphire blue tubular flowers surrounded by black calyxes on black stems held above deep green anise ...