Achillea 'Moonshine' (Yarrow 'Moonshine'): Very popular variety with large bright yellow/gold flowerheads above silvery green ferny foliage. Height to 80cm

Achillea 'Paprika' (Yarrow 'Paprika'): As its name suggests, rich, dark orange flowerheads above ferny green foliage. Great in full sun and light soils. Height to 75cm

Achillea 'Summerwine' (Yarrow 'Summerwine'): Bright, beaujolais wine red flat flowerheads over ferny foliage. Perfect for pollinators. Thrives in full sun and dry soil. Up to 90cm.

Achillea 'Terracotta' (Yarrow 'Terracotta'): A lovely, multi-hued variety opening warm orange and fading slowly to a rich cream. Full sun and light soil. Hardy. To 80cm

Amsonia tabernaemontana (Blue dogbane): Starry blue flowers on strong stems with willowy green leaves. Hardy. Up to 90cm.

Astilbe 'Delft Lace': Upright plumes of pink flowers on deep red stems in mid-summer. Lacy blue-green foliage. Excellent for damp or shady spots. [Collect Only]

Astilbe 'Ellie': Large, upright panicles of white flowers in mid-summer over dark green ferny foliage. Hardy. Up to 80cm. [Collect Only]

Astrantia major Gill Richardson Group (Hattie's pincushion, Masterwort 'Gill Richardson'): Superb variety with cherry red flowers held above strong green foliage. Repeat flowers readily if dead-headed. Hardy. Up to 90cm.

Astrantia major subsp. involucrata 'Shaggy' (Hattie's pincushion, Masterwort 'Shaggy'): Greenish white umbel flowers surrounded by long white bracts above mounds of green palmate leaves. Long flowering. Up to 80cm. Hardy

Campanula Iridescent Bells = 'Iribella' (PBR) (Bellflower 'Iridescent Bells'): Purple buds open to silvery-lilac bells in summer. Prefers a moisture retentive soil. Height to 80cm. Hardy

Campanula persicifolia var. alba (Peach-leaved bellflower white flowered): Pure white large rounded cups on upright stems. Height to 70cm. Hardy.

Deschampsia cespitosa 'Goldtau' (Tufted hair grass 'Goldtau'): Early flowering grass, in flower by mid-July. Airy flower plumes which shimmer if catch the light. Shorter than many varieties.

Digitalis x mertonensis (Strawberry foxglove): Large, dusky pink flowers on sturdy spikes in mid-summer. Hardy. To 90cm.

Eryngium x zabelii 'Jos Eijking' (Sea Holly 'Jos Eijking'): Large steely blue bracts surround a dome of tiny blue flowers in summer. Long-lasting flowers.Thrives in a sunny,dry spot. To 70cm. Hardy.

Eryngium x zabelii 'Violetta' (Sea Holly 'Violetta'): Deep dark-blue form of the Sea Holly with bracts surrounding a dome of tiny blue flowers. Thrives in sunny, dry gardens. Hardy. Up to 80cm.

Geranium 'Blue Cloud' (Cranesbill 'Blue Cloud'): Tall cultivar with pale blue flowers & dark purple veining above deeply divided green leaves. Long-flowering. Hardy. Up to 90cm. [Collect Only]

Geranium pratense 'Cloud Nine' (Meadow cranesbill 'Cloud Nine'): An attractive double form of the familiar meadow cranesbill with lovely soft blue flowers. Strong growing. Hardy. Up to 90cm. [Collect Only]

Geranium pratense var. pratense f. albiflorum 'Laura' (PBR) (Meadow cranesbill 'Laura'): An attractive double form of the familiar meadow cranesbill with lovely pure white flowers. Strong growing. Hardy. Up to 70cm. [Collect Only]

Hemerocallis 'Marion Vaughn' (Day Lily 'Marion Vaughn'): Large, creamy lemon flowers over a long period in mid-summer. Height to 80cm. Hardy. [Collect Only]

Hemerocallis 'Sammy Russell' (Day lily 'Sammy Russell'): Rich, bronzey-red flowers in mid-summer over strappy foliage.

Hosta 'Frances Williams': Large heart-shaped crinkled leaves with a prominent green-yellow margin. Lavender purple flowers in mid summer. Hardy. Up to 75cm. [Collect Only]

Iris sibirica (Siberian Iris): Soft, purplish blue iris flowers over strappy green foliage. [Collect Only]

Lobelia cardinalis 'Russian Princess' (Cardinal flower 'Russian Princess'): Upright spikes of red leaves, topped with fuchsia pink flowers.

Monarda 'Jacob Cline' (Bee Balm/Bergamot 'Jacob Cline'): Whorls of the brightest imaginable red flowers over bright green aromatic foliage. Hardy. Up to 75cm.

Penstemon 'Andenken an Friedrich Hahn' (Syn. Penstemon 'Garnet'): Wine-red tubular flowers with white throat markings and narrow leaves. Semi-evergreen in milder areas. Protect from hard frosts.

Penstemon 'Apple Blossom': Pale pink tubular flowers with a white throat over semi-evergreen, narrow foliage. Frost hardy. To 70cm.

Penstemon 'Dark Towers' (PBR): Pink tubular flowers which contrast with the dark bronze foliage. Semi-evergreen in milder areas. Protect from hard frosts. To 90cm. [Collect Only]

Penstemon 'Pensham Just Jayne': Bright pink tubular flowers with darker centres and white markings. Semi-evergreen in milder areas. Protect from hard frosts.To 50cm. Frost hardy. [Collect Only]

Penstemon 'Pensham Plum Jerkum': Plum-purple tubular flowers with white throat markings. Semi-evergreen in milder areas. Protect from hard frosts. To 70cm.

Phlox paniculata 'Bright Eyes' (Phlox 'Bright Eyes'): Pink scented flowers with a darker pink eye. To 90cm. Hardy

Phlox paniculata 'Eventide' (Phlox 'Eventide'): Mauve-purple, scented flowers on erect stems and green lance-shaped leaves. A good vigorous selection. Hardy. Up to 90cm. AGM [Collect Only]

Phlox paniculata 'Laura' (Phlox 'Laura'): Dense clusters of lavender pink flowers with a white eye, in mid-summer. Scented. Hardy. Up to 80cm.

Phlox paniculata 'Starfire' (Phlox 'Starfire'): Dense clusters of vibrant crimson pink flowers in mid-summer. Scented. Not too tall at about 90cm. Hardy. [Collect Only]

Rodgersia 'Irish Bronze': Bronze tinted leaves, shaped much like a horse-chestnut's. Sprays of fluffy white flowers in mid-summer. To 70cm. Hardy. [Collect Only]

Salvia x sylvestris 'Mainacht' (Wood sage 'May Night'): Spikes of warm purplish blue flowers in mid-summer. Height to 70cm. Hardy.

Sidalcea 'Elsie Heugh' (Prairie mallow 'Elsie Heugh'): Spikes of large clear pink flowers above rounded bright green leaves. To 80cm. Hardy

Sidalcea 'Loveliness' (Prairie mallow 'Loveliness'): Pale pink flowers on upright spikes in mid-summer. Round, glossy, semi-evergreen leaves. To 75cm. Hardy. [Collect Only]

Sidalcea 'Sussex Beauty' (Prairie mallow 'Sussex Beauty'): Large candy pink flowers held on stiff upright stems above rounded green foliage.To 70cm. Hardy [Collect Only]

Sidalcea 'William Smith' (Prairie mallow 'William Smith'): Rich rose pink flowers on upright spikes in mid-summer. Round, glossy, semi-evergreen leaves. Hardy. Up to 90cm.

Stokesia laevis 'Mary Gregory' (Stoke's aster 'Mary Gregory'): Large fluffy lemon yellow flowers in mid summer above slender green leaves. To 40cm. Hardy

Trautvetteria caroliniensis (False bugbane): Fluffy white, lightly fragrant flowers, similar to the Thalictrum flowers. Prefers partial shade with a moist soil. Hardy. Up to 90cm. [Collect Only]

Trollius chinensis 'Golden Queen' (Globeflower 'Golden Queen'): Glowing gold cup-shaped flowers with a very prominent central boss of gold anthers. Really stunning. [Collect Only]