[ S. columnaria is a misspelling of this species]
Attractive 24' tall plants with 1.5 inch wide, free flowering, lilac flowers. Flowers are on long stems and are held up above the tight cluster of deeply cut foliage. The longest blooming perennial that we grow-from Mid summer till well after a hard frost in Late October. Germination starts in two weeks at 70F, light helps germination. The flowers are produced on long - open lose stems that tend to sprawl out and about the area. Best effect planted in groups of three or five plants - that will take up a five foot wide area. Full sun to light shade.