Salvia sonomensis (Sonoma sage, creeping sage) is a low-growing perennial plant that is endemic to California.
S. sonomensis, as suggested by its common name "creeping sage", is a mat-forming subshrub with stems growing up to about 30 cm (12 in) tall, with 15 cm (5.9 in) inflorescences that stand above the foliage. The species is highly variable in leaf shape and size and in flower color. Leaves can be long and narrow, or shorter and rounded, with leaf color also showing a wide range from yellow-green to gray-green. Flowers can be pale lavender, lavender-purple, or lavender-blue.
The specific epithet, sonomensis, refers to Sonoma County, California, one of the areas where it is found.
S. sonomensis is found in three distinct areas in California: the California Coastal Range from Siskiyou to Napa county; from Monterey county to San Diego county; and in the Sierra Nevada foothills. It is always found growing under 2,000 m (6,600 ft) elevation on dry hillsides and woodlands.