In our experience, this is not a Salvia to run dry. Watered and fertilized well, and kept free of whiteflies and mites they are magnificent. But not dry.

Agree with Kermit. This Salvia (many forms) comes from areas in South America with plentiful rainfall. They will adapt to drier conditions once established, after a year or two.

Watch out for pine voles and/or gophers. You might want to incorporate some stony gravel or expanded shale/slate pellets to deter digging mammals.

Not only not dry but it should have a well-draining soil mix. Otherwise it will wilt and eventually die. It does need a certain amount of care.