The plants grow 9 inches tall and are somewhat hairy. They remain in bloom for a long time, the flowers being produced in one-sided curving clusters. P. whitlavia, the Bluebell P., grows 18 inches tall, differing from the above in having a swollen corolla tube three times as long as the lobes.
Phacelias are excellent edging plants for blue effects and admirably suited to the rockery.
They may be grown in pots in a cool greenhouse. These plants prefer full sun and a light soil. Let them stand 8 inches apart.