Sidalcea ‘Rose Queen’
An erect perennial with rounded rich green leaves. Spikes of rose-pink flowers from early to mid-summer.
Sidalcea ‘Sussex Beauty’
An erect perennial with rounded rich green leaves. Spikes of satin clear pink flowers from early to mid-summer.
Sidalcea ‘William Smith’
An erect perennial with rounded rich green leaves. Spikes of deep rose-pink flowers from early to mid-summer.
Silene dioica
A clump-forming perennial with dark green leaves. Clusters of light purple-red flowers from late spring to early summer.
Silene dioica ‘Rosea Plena’
A clump-forming perennial with dark green leaves. Clusters of double pink flowers from late spring to early summer.
Silene fimbriata
An upright perennial with bright green leaves. Pretty pure white flowers with fringed petals in summer.
Sisyrinchium angustifolium
A clump-forming perennial with narrow dark green leaves. Upright stems of pretty deep blue flowers with a yellow throat in summer. Self-seeds.
Sisyrinchium ‘Biscutella’
A clump-forming perennial with narrow dark green leaves. Upright stems of pretty dull yellow and brownish purple heavily veined flowers in summer.
Sisyrinchium ‘Blue Ice’
A clump-forming perennial with narrow dark green leaves. Open pale blue flowers in summer.
Sisyrinchium ‘Californian Skies’
A clump-forming perennial with narrow dark green leaves. Upright stems of pretty bright deep sky-blue flowers in summer.
Sisyrinchium ‘E K Balls’
A clump-forming perennial with fanned out green leaves. Upright stems of pretty dark mauve flowers with a yellow eye in summer.
Sisyrinchium idahoense
A clump-forming perennial with narrow dark green leaves. Upright stems of pretty star-shaped deep violet-blue flowers with a yellow throat in summer.