Phacelia campanularia is found in rocky slopes and sandy washes in California, up to 6,000 ft altitude. This small shrub grows between 2-5 ft tall, with an upright, wiry, branching habit. It is a drought tolerant plant and will tolerate periods of no water if the soil is well drained.
This California native prefers a location in full sun but can tolerate part shade for partial day. Once established, it needs moderate water. The flowers are a beautiful gentian blue and range from deep blue to lavender and purple. In mild climates, it may even flower year round. The flowers are quite attractive to butterflies and hummingbirds.
Phacelia campanularia can be grown outdoors in USDA Zone 9-11. Gardeners in colder regions may try growing it in a container near a sunny wall. Provide the bell-flowered plant water and protection from extreme temperatures to keep it blooming properly.
It is a very attractive, easy-care plant and can be an excellent addition to a planting bed or rockery. Butterfly, bee, and hummingbird enthusiasts will appreciate the beauty of this drought tolerant plant.