They bloom from early to midsummer and are followed by tapering seed pods filled with many small brown seeds. The species has been hybridized for garden use into double-blossomed and dwarf forms. Clarkia makes an excellent cut flower. Clarkia thrives in a Western Coniferous Woodland environment. They need a light, sandy soil and do well in full sun or partial shade.
Seeds germinate best in cool weather.
Since they don't transplant well, sow seeds where plants are to remain. Thin seedlings to stand 9 inches apart. When plants are about 6 inches high, pinch back the tops to encourage branching. Expect flowers 90 days after sowing seeds. Glistening white pointed petals open to reveal a startling bright blue base.