Posted: 2017-11-24 03:10
Easily grown in average, dry to medium, well-drained soils in full sun to part shade. Appreciates some afternoon shade in hot summer climates. Prefers moist, humusy soils where it can rapidly spread by rhizomes, but tolerates a wide variety of soils including poor, dry soils where its spreading habit is more restrained. Naturalization into outlying areas primarily occurs by self-seeding, but rhizomatous spread in beds and borders can pose significant problems of control and removal. Shear off spent flowers immediately after bloom in order to control any unwanted self-seeding.