Most perennial Salvias thrive when planted in autumn. This is true whether they are shrubby or herbaceous, deciduous or evergreen. Now is a good time to survey your garden and decide where new plantings are needed as well as which Salvias will most please your eye and attract hummingbirds.
The soil is warmer in autumn than in spring, which stimulates root growth and gets a small plant off to a better start. Also, in early autumn, gardeners don’t face the back-to-back frost threats of planting too early or too late -- a problem that makes early Spring gardening risky in some areas. Settling into garden life in fall gives Salvias a chance to grow deep and strong before the demands of rapid growth and flowering begin.