Geranium clarkei
Easily grown in average, medium, well-drained soil in full sun to part shade. Prefers moist, humusy, well-drained soils, particularly in hot summer climates. Intolerant of drought. Performs best in cool summer climates, and is intolerant of the heat and humidity of the deep South. Shear off spent flowers after bloom to encourage additional bloom or tidy the planting. In the alternative, plants may be left alone after flowering to promote self-seeding.