This hardy annual is native to California, but is easily grown throughout the United States.
Since they do not transplant well, sow directly into the desired location, about 1/16 inch deep, as early as possible. Soil should be 55 to 65ºF for good germination, which can take between 7 to 30 days.
They grow 4 to 6 inches tall and will cover an 8 to 12 inch area at maturity.
The dainty, cup-shaped, sky blue flowers bloom throughout the spring and into summer. They prefer a location that is partially shady but will tolerate full sun in cooler climates if not allowed to dry out.
They require a light, sandy soil with moderate amounts of water and do well as border plantings or in planter boxes and hanging baskets.