BLOOM TIME: All Summer HARDINESS ZONE: 7 - 10 PLANT HEIGHT: 6 - 18" . . . PLANT SPACING: 12 - 15" LIGHT REQUIREMENTS: Sun . . . SOIL / WATER: Average - Dry The showy electric blue flowers of this bluebell wont let you down! It attracts birds, bees, and butterflies too. Phacelia campanularia is a species of flowering plant in the borage family, boraginaceae, known by the common names desert bells, desert bluebells, California-bluebell, [3] desert scorpion weed, [4] and desert Canterbury bells. [5] its true native range is within the borders of California, [2][6][4] in the Mojave and Sonoran deserts, but it is commonly cultivated as an ornamental plant and it can be found growing elsewhere [7] as an introduced species. The showy electric blue flowers of this bluebell wont let you down! It attracts birds, bees, and butterflies too. Light requirements: sun . . . Soil / water: average - dry.