Biennial or perennial herbs. These much admired Spring flowers will thrive almost anywhere and with little attention, by simply sowing the seeds, one-eighth of an inch deep, where they are to bloom, in October or November, and thinning the plants when two or three inches high, to six inches apart, but, where fine spikes of either single or double varieties are desired, the seeds should be sown in August in a cold frame, and, when large enough to be handled, the seedlings should be planted, three inches apart, in boxes filled with light soil, and transplanted to their blooming quarters early in November. This treatment will bring them into flower early in April.