|'Yankee Point' is a more diminutive cultivar, not more than two or three feet in height, but a vigorous and profuse bloomer with brilliant, sky-blue flowers.
C. griseus is a compact, low-growing, broad, evergreen shrub. Leaves are oblong, glossy, dark green and finely toothed up to 2 inches long. Dark blue flowers are borne profusely in large lateral cymes up to 3 inches long. Excellent for a shrub border or against a sunny wall.