Aconitum napellus (Monkshood): Dark blue hooded flowers over finely divided foliage. This Aconitum flowers early, in late spring/early summer. Height to 1.5m. Hardy. [Collect Only]

Aconitum napellus 'Album' (White Monkshood): White hooded flowers over finely divided frondy foliage. A great plant for shade, even quite dry shade. Flowers at about 1.2m Hardy. All parts are highly toxic [Collect Only]

Actaea 'Queen of Sheba' (PBR) (Baneberry 'Queen of Sheba' (Previously known as Cimicifuga)): An excellent variety with attractive dark almost black foliage and tall stems of white flowers which hang downwards.Hardy. Up to 1.5m. [Collect Only]

Actaea pachypoda (white baneberry): Grown mainly for its pure white berries in autumn, each with a black 'eye' on a red stalk. Hardy. Up to 1m. [Collect Only]

Actaea simplex 'Brunette' (Baneberry 'Brunette' (Previously known as Cimicifuga)): Spires of scented white flowers in late summer over very attractive ferny dark foliage. A superb plant in part shade. Hardy. Up to 1.5m

Actaea simplex 'Pink Spike' (Baneberry 'Pink Spike' (Previously known as Cimicifuga)): Spires of scented pale pink flowers from pink buds in late summer. Reddish-brown foliage. [Collect Only]

Agastache rugosa 'Liquorice Blue' (Korean mint 'Liquorice Blue'): Spikes of warm blue lipped flowers from late June onwards. Very attractive to bees. Aromatic foliage. To 1.5m. Hardy in light soils.

Agastache rugosa f.albiflora 'Liquorice White' (Korean mint 'Liquorice White'): Tall, aromatic perennial with spires of tiny white flowers. Aromatic foliage. To 1.5m. Fully hardy in light soils. May self-seed.

Anemone leveillei: Delicate white daisy-like flowers with lovely purple anthers and lilac backed. Foliage forms a mound of divided green leaves. Up to 45cm.

Armeria maritima 'Rubrifolia' (Thrift 'Rubrifolia'. Syn. Armeria maritima 'In the Red'): Clumps of narrow bronze foliage topped with spheres of bright pink flowers. An old-fashioned cottage garden favourite. To 25cm.

Armeria maritima 'Splendens' (Thrift 'Splendens'): Clumps of narrow green foliage topped with spheres of pink flowers. An old-fashioned cottage garden favourite. To 25cm.

Aruncus aethusifolius (Goat's beard): Lovely fresh ferny foliage which turn golden in the autumn. Spikes of creamy white flowers in early summer. To 50cm.

Asphodeline lutea (Asphodel): Vertical spikes of sulphur yellow flowers in early to mid-summer. Hardy, but dislikes heavy soil in winter. To 1.2m

Athyrium niponicum 'Red Beauty' (Japanese painted fern 'Red Beauty'): A very elegant deciduous fern with silvery green arching fronds with reddish-purple stems. Prefers a moist shady site. Up to 50cm.

Baptisia 'Solar Flare' (Indigo weed 'Solar Flare'): New Baptisia with unusual golden yellow pea-like flowers which deepen in colour as they age producing a multicoloured effect. Hardy. Up to 90cm. [Collect Only]

Baptisia australis (Indigo weed): Spires of lipped indigo flowers over olive-green foliage. Flowering height 1.2m. [Collect Only]

Cichorium intybus (Wild chicory): Large cup shaped white flowers over soft ferny foliage. Thrives in sunny, well drained spots. To 2m

Deschampsia cespitosa 'Goldschleier' (Tufted hair grass 'Goldschleier'): Summer flowering grass. Airy golden flower heads keep their structure long into winter. Hardy. Up to 1m.

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. To 75cm.

Deschampsia cespitosa 'Schottland': Summer flowering grass with dark green leaves and airy silvery purple flower heads, keep their structure long into winter. Hardy. Up to 1.2m. [Collect Only]

Dianthus carthusianorum (German pink): Tall stems ending in clusters of bright pink flowers above mounds of green, grassy foliage. Prefers sunshine. Hardy. Up to 50cm.

Dierama 'Blackberry Bells' (Angel's Fishing Rod): Large bells of deep-purple maroon flowers held on tall, slender stems above grass-like foliage. Hardy. To 1.2m

Dierama 'Snow Bells' (white angel's fishing rod): Tall, wiry, arching stems with white nodding bells. Grassy foliage. Likes well-drained soil that doesn't dry out. Hardy. Up to 1.5m.

Dierama pulcherrimum (Angel's Fishing Rod): Tall, wiry, arching stems with soft pink nodding bells. Likes well-drained soil that doesn't dry out. Lovely near water or over paths. To 1.5m.

Dierama pulcherrimum 'Blackbird' (Angel's Fishing Rod): Arching bells of burgundy red flowers nodding over grassy foliage.

Echinacea purpurea 'Magnus Superior' (Coneflower 'Magnus Superior'): Superb form with tall stems of pink daisy flowers with a central brown cone. Prefers full sun and good drainage. Hardy. Up to 1m.

Echinacea purpurea 'Rubinstern' (Coneflower 'Rubinstern'): Large pink flowers with a big golden central cone in late summer. Needs full sun and good drainage. To 90cm.

Eryngium alpinum 'Blue Star': Large electric-blue flowers with a spiky collar and spiky silver-green foliage. Slightly shorter then some other Eryngium varieties. Hardy. Up to 70cm. [Collect Only]

Eryngium bourgatii 'Picos Amethyst'': Stunning steely blue flowers on stiff stems with a gorgeous purple tint. Loves sunshine and well-drained soil. To 70cm. [Collect Only]

Eryngium x zabelii 'Big Blue (Sea Holly 'Big Blue): Large electric-blue thimble-shaped flowers with a spiky collar and silver-green foliage. Long flowering and bee-friendly. Hardy. Up to 75cm

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.

Euphorbia characias subsp. wulfenii (Mediterranean spurge): Evergreen perennial with blue-green leaves and vibrant lime-green flowers in early summer. Prefers full sun. Hardy to about -10C, but not for long periods. Up to 1.2m. [Collect Only]

Euphorbia mellifera (Honey spurge): A stately plant which makes a dramatic feature in sheltered spots.

Francoa sonchifolia (Bridal wreath): Spires of pale pink flowers over semi-evergreen, pinkish-green foliage.

Gaura lindheimeri 'The Bride': Beautiful airy stems of white flowers in mid to late summer. Best in full sun, in well drained soil and a sheltered spot. Stems up to 1m. [Collect Only]

Gaura lindheimeri Karalee White ('Nugauwhite' PBR): Beautiful airy stems of white flowers in mid to late summer. Best in full sun and a sheltered spot. Shorter than some cultivars with stems up to 60cm.

Geranium palmatum: Bright pink flowers held on wiry stems above rosettes of evergreen foliage. To 60cm. Frost hardy.

Gillenia trifoliata (Bowman's root): Lovely plant with starry white flowers held high over elegant foliage. Great in light shade. Hardy. To 90cm.

Hepatica nobilis: Pretty bowl shaped blue flowers in early spring.

Heuchera 'Black Pearl': Dark purple almost black leaves with ruffled edges and white flowers. Does fine in sun or dappled shade. Hardy.

Heuchera 'Midnight Rose': Darkest purple leaves, splashed with bright pink. Excellent for all year round foliage colour. Hardy. Up to 30cm.

Heuchera 'Paris': Green leaves, attractive silver markings and coral red flower spikes in mid summer. All-round attractive plant

Hosta 'Devon Green': Elegant hosta with tapering, dark green, fine-veined leaves. Lilac flowers in summer [Collect Only]

Kniphofia 'Timothy' (Red hot poker 'Timothy'): Tall spikes of creamy orange flowers on bronze stems in mid-late summer. Superb in sunny, dry borders. To 1.2m. Hardy

Lamprocapnos spectabilis 'Alba' (formerly Dicentra) (Bleeding Heart, Dicentra): Pure white form of the familiar Bleeding Heart. Very pretty in dappled shade. Does best in soil that isn't too dry. Hardy. To 70cm [Collect Only]

Lamprocapnos spectabilis 'Valentine' (Bleeding Heart, Dicentra): Superb warm red flowered version of this familiar spring flowerer. Hardy. Up to 80cm. [Collect Only]

Leucojum aestivum 'Gravetye Giant' (Summer snowflake): Rather like a tall, green-tipped snowdrop, but flowering in mid to late spring. Fully hardy. Height to 50cm. [Collect Only]

Liatris spicata 'Alba': Spikes of white flowers in mid to late summer. Very useful vertical accent. Bees adore it. To 80cm. Hardy

Lychnis coronaria Atrosanguinea Group (Rose campion (dark red)): Bright magenta flowers over felty, silver foliage. Great for sunny, dry areas can be short lived in a wet, cold winter. To 1.2m Hardy. [Collect Only]

Paeonia 'Buckeye Belle' (Peony 'Buckeye Belle'): Blowsy, glossy, deep red, semi-double large flowers with golden stamens. Attractive green foliage. A real stand-out plant. [Collect Only]

Paeonia 'Flame' (Paeony 'Flame'): Rich and shiny scarlet red single flowers with a yellow centre. Glossy dark green leaves. Hardy. Up to 80cm. [Collect Only]

Paeonia 'Moonrise': Beautiful large single creamy white flowers with a big fluffy yellow centre. Highly scented. Glossy mid green leaves. Hardy. Up to 90cm. [Collect Only]

Paeonia lactiflora 'Sarah Bernhardt' (Paeony 'Sarah Bernhardt'): A gorgeous form with lightly scented, large double pale pink flowers. Glossy dark green leaves. It may require staking. Hardy. Up to 90cm. [Collect Only]

Paeonia officinalis 'Rubra Plena' (Peony 'Rubra Plena'): Large heart-shaped leaves with strong silver colouration with green veins. Sprays of forget-me-not blue flowers. Hardy. Up to 30cm. [Collect Only]

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

Penstemon 'Schoenholzeri': Brilliant scarlet tubular flowers, slender leaves.

Pulsatilla vulgaris var. rubra: Large cup shaped white flowers over soft ferny foliage. Thrives in sunny, well drained spots. Silvery seed heads in summer. To 40cm. Hardy. [Collect Only]

Salvia 'Amistad' PBR (Sage 'Amistad'): Tender perennial deep purple tubular flowers with a dark black calyx. Flowering from early summer to first frosts. Deadhead to prolong flowering. Up to 1.2m. [Collect Only]

Salvia 'Hot Lips' (Sage 'Hot Lips'): Bicolour flowers in white and lipstick red and delicious scented foliage. Half-hardy, copes with -5C in a sheltered spot. To 1m.

Salvia guaranitica 'Black and Blue' (Anise-scented sage 'Black and Blue'): A subshrubby perennial with mid-green leaves. Spikes of rich blue and purple-blue flowers from late summer to late autumn.

Salvia patens 'Cambridge Blue': Beautiful Salvia with pale blue two-lipped flowers flowering in late summer. Needs a sunny, sheltered position and protect with mulch.To 1m.

Salvia x jamensis 'Nachtvlinder' (Sage 'Nachtvlinder'): Regal purple flowers on upright stems throughout late summer into autumn.

Thalictrum 'Splendide White' (PBR) (Rue 'Splendide White'): Pure white flowers open from spherical buds. Spectacular in dappled shade

Thalictrum 'Splendide' (Rue 'Splendide'): Superb Thalictrum with clouds of purple flowers open for a very long time in late summer. Hardy. Up to 1.5m

Thalictrum delavayi (Chinese meadow rue): Dainty lilac-mauve flowers 2cm in width, with prominent creamy yellow stamens above fern-like bright green leaves. Hardy. Up to 1.5m.

Thalictrum delavayi 'Hewitt's Double' (Chinese meadow rue 'Hewitt's Double'): Tiny purple pom-pom flowers dance airily above ferny grey-green foliage. Height to 1.2m. Hardy

Woodwardia fimbriata (Giant chain fern): Dramatic looking evergreen fern with glossy arching green divided foliage. Needs a sheltered spot in partial shade, Prefers a moist soil. Up to 1.5m