Sweet William catchfly (Silene armeria, also known botanically as S. rubella subsp. rubella and commonly as none-so-pretty) first produces tight rosettes of blue-green leaves, then sends up open, branching stems topped with an abundance of starry, bright pink flowers in summer. Height in bloom is usually 12 to 18 inches.
Sweet William catchfly can be perennial in Zones 5 to 8–overwintered plants often start blooming in late spring–but it flowers so heavily that it may get worn out by mid to late summer and disappear, particularly after a long hot, humid period. It self-sows freely if not deadheaded, though, so it comes up again in the same area, making it functionally a perennial. Or, you can treat it like an annual and start it in spring or summer for flowers later the same year. Either way, it is easy, fast-growing, and colorful, perfect for a cottage-style garden or as a filler in a young bed or border. Full sun to partial shade. I harvested these seeds in 2020, starting in late June. At least 30 seeds.