This hardy and popular perennial is among the most beautiful of our herbaceous plants, having erect, flowering branches (two or three feet tall) and funnel-shaped flowers, the principal colors being blue, pink, scarlet and white with all the intervening shades. The Pentstemon grows well in any fairly good soil. The flower-stalks of the taller-growing varieties should be supported by light stakes to keep them from being blown about by winds or borne down by heavy watering.
Propagation is effected by seeds and cuttings; the seeds should be sown, to the depth of an eighth of an inch, in February or early in March, in a cool frame. When large enough to be handled the seedlings should be pricked off, three inches apart, into pots or boxes, and planted out, when about four inches high, where they are to bloom. They should be exposed to full air and sunshine at least one week before being planted out of doors. Propagation by cuttings is made, in September, by inserting the cuttings either in a cold frame, where they may be shaded for the first two weeks, or in a shady spot away from cold draughts of wind, out of doors, in soil composed of half sand and half leaf-mold.