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Sanguisorba 'Tanna'
A compact perennial with attractive blue-grey foliage and bearing spikes of red flowers in summer.
Silene dioica
A mat-forming, semi-evergreen perennial often found growing wild, with ovate leaves and small clusters of purplish-pink flowers from summer into autumn.
Sisyrinchium striatum
Tufts of long, narrow leaves support slender upright spikes of yellow flowers in summer. Self-seeds freely.
Stachys byzantina 'Big Ears'
A mat-forming perennial with velvety, white-hairy green leaves producing spikes of purple flowers in summer.
Succisa pratensis
Pretty, purple, pincushion-like flowers on branching stems in summer and autumn.
Tellima grandiflora
Rosette-forming perennial bearing greenish white flowers above scalloped foliage from May to July. A particularly good plant for areas of dry shade.
Teucrium chamaedrys f. albiflora
A small, perennial, evergreen subshrub with toothed, dark green leaves with softly hairy undersides producing spikes of tubular, lipped, white flowers in late summer and early autumn.
Thalictrum 'Splendide'
An upright perennial producing panicles of delightful lilac-mauve flowers in summer with prominent creamy anthers on arching stems.
Trifolium rubens
A clump-forming perennial with blue-green foliage, producing pointed clusters of dark red-purple fowers in spring and summer.
Trollius chinensis 'Golden Queen'
An upright perennial with deeply-lobed and sharply-toothed dark green leaves with orange-yellow, bowl-shaped flowers in late spring and early summer.
Trollius x cultorum 'Alabaster'
A clump-forming perennial with deeply-divided leaves, producing very pale yellow, bowl-shaped flowers on long stems in spring.
Tulbaghia violacea
A strong-growing perennial with grey-green, strap-like foliage and bearing pale purple-pink, fragrant flowers in late summer and into early autumn.
Tulbaghia violacea 'Silver Lace'
Clump-forming perennial with linear, variegated, grey-green foliage with a cream stripe producing fragrant lilac coloured flowers from summer into autumn.
Vinca Alba
An evergreen perennial with long, prostrate shoots bearing neat, ovate leaves, and single white flowers from spring to early autumn
Viola sororia 'Freckles'
A deciduous perennial with ovate leaves with white flowers in spring, speckled with violet.