Mountain Phlox (Phlox austromontana)
A bushy annual, has leaves divided into needle-like divisions, 1-inch flowers in dense heads, white to pale lilac. Found across California, open woods and sandy places, below 3,500 ft. elev., coastal strand and scrub, pine forests. Prefers full sun and light, sandy soils; can sow in the fall in spring elsewhere after soil warms up.