Sesleria heufleriana
A beautiful plant with fresh green foliage and purplish flowerheads throughout the summer
Sesleria nitida
A pretty grass with grey green foliage and grey flowerheads in late spring
Shibataea kumasasa
An evergreen clump-forming bamboo with greenish brown canes and rich dark green leaves. New canes appear in very early spring.
Sidalcea ‘Croftway Red’
An erect perennial with rounded rich green leaves. Spikes of rich reddish pink flowers from early to mid-summer.
Sidalcea ‘Elsie Heugh’
An erect perennial with rounded rich green leaves. Spikes of purple-pink flowers with fringed petals from early to mid-summer.
Sidalcea ‘Party Girl’
An erect perennial with rounded rich green leaves. Spikes of bright pink flowers from early to mid-summer.
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.
Sidalcea candida
An erect perennial with rounded rich green leaves. Spikes of cream or white flowers from mid to late summer.
Siderasis fuscata
A rare foliage plant with attractive large dark green leaves flushed with rich purple and a distinctive central vein
Silene acaulis
A very dwarf moss-like cushion of narrow, bright green leaves. Almost stemless, deep pink sometimes white flowers from spring to early summer.