Phacelia campanularia is a species of flowering plant in the borage family, Boraginaceae, known by the common names desertbells, desert bluebells, California-bluebell.
Phacelia Campanularia seeds have to be kept moist until germination, and the growing California Bluebell likes to grow in full sun and sandy, dry, or moist well drained soil, but the plant adapts to various growing conditions.
After weeding, prune your bluebell flowers by pinching off the tips of any fading flowers and by cutting the taller flowering stalks one-third of the way down after blooming has ceased.
California Bluebell seeds should be started directly outside with optimum germination temperatures of 50 - 55 degrees.
This plant only grows to about 70cm (28") tall, so it can work in larger containers, but it is happiest in full sun or partial shade in average garden soil.