Achillea filipendulina 'Gold Plate' (Yarrow 'Gold Plate'): Statuesque achillea with huge, flat gold flower heads above upright ferny foliage. A statement plant for dry, sunny borders. Hardy. To 1m.

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

Althaea cannabina (Hemp leaved Hollyhock): Very tall, slender, wandy stems with shell pink flowers in late summer

Aster macrophyllus 'Twilight' (Syn. Eurybia x herveyi): Lavender-blue flowers with a yellow centre in late summer. Mildew-resistant foliage. An earlier flowering variety. Height to 1m.

Aster trifoliatus subsp. ageratoides 'Ashvi': White flowers in a neat mound over a very long season - July to November. Hardy. Up to 80cm.

Baptisia australis 'Alba' (Indigo weed - white form): Spires of lipped white flowers over olive-green foliage. Hardy. Flowering height 1.2m.

Calamagrostis brachytricha (Korean feather reed grass): Arching, plump spikes of silvery purplish flowerheads turning golden brown in winter.

Cichorium intybus f. album (Chicory- white form): White flowered form of wild chicory. Tall stems, flat white flowers in late summer. Needs a bit of support. Hardy. Up to 2m.

Crocosmia x crocosmiiflora 'Citronella': Bright sunny yellow funnel shaped flowers in late summer with sword shaped green foliage. A compact variety. Hardy. Up to 60cm.

Cyclamen hederifolium 'Album': A tuberous perennial with variable gree or patterned leaves. Delicate pure white flowers produced before the leaves. Self-seeds freely. [Collect Only]

Cynara cardunculus 'Cardy': New form of Cynara, larger flowers good as a cut-flower. Tall silver leaved plant topped with large purple thistle flowers. Hardy. Up to 1.5m

Echinacea 'Hope' (Coneflower 'Hope'): Pastel pink daisy-like flowers with large orange central cone. Large blooms. Attractive to bees and butterflies. [Collect Only]

Echinacea purpurea 'Green Twister' (Coneflower 'Green Twister'): A new variety with a unusual mix of purple and lime green flowers with upturned petals and a central dark cone. Hardy. Up to 60cm.

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

Echinacea purpurea 'Virgin' (Coneflower 'Virgin'): A very good pure white form with central golden cone.

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 [Collect Only]

Eupatorium maculatum 'Riesenschirm' (Joe Pye Weed 'Riesenschirm'): Even taller than the species and a dramatic plant with huge heads of purplish pink flowers in late summer. Hardy. To 2.5m.

Eupatorium maculatum Atropurpureum Group (Joe Pye-weed): Tall, dramatic plant with domes of purplish pink flowers in late summer. Very attractive to bees. Hardy. To 2m. [Collect Only]

Gaura lindheimeri Rosyjane = 'Harrosy' (PBR) (Gaura 'Rosyjane'): Airy sprays of pink flowers with a white petal centre. Perennial, but dislikes winter wet and doesn't thrive outdoors in cold areas. To 80cm.

Geranium wlassovianum: Warm purple flowers over attractive velvety foliage. Excellent autumn foliage colour. [Collect Only]

Helenium 'Kanaria' (Sneezeweed 'Kanaria'): Masses of clear lemon yellow flowers with swept back petals and central mustardy-gold dome. [Collect Only]

Helenium 'Mardi Gras' (Sneezeweed 'Mardi Gras'): Bright orange petals, splashed with yellow and brown central cone in late summer. Long flowering if cut back flowered stems.

Helianthus salicifolius (Willow-leaved sunflower): Tall, mobile stems with fine, willow-like leaves - makes a fine foliage feature. Yellow flowers in autumn

Kniphofia 'Bees Sunset' (Red hot poker 'Bees Sunset. Syn. Kniphofia 'Shining Sceptre'): Sturdy golden spikes over strappy green foliage in late summer.

Kniphofia 'Drummore Apricot' (Red Hot Poker 'Drummore Apricot'): Tall spikes of apricot flowers fading to yellow. Strappy green foliage. Strong vertical statement in the summer border. Hardy. Up to 75cm.

Kniphofia 'Nobilis' (Red hot poker 'Nobilis'): Tall, heavy spikes of orange flowers on stiff stems in late summer. A bold statement in open, dry, sunny areas

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

Leucanthemum x superbum 'Aglaia' (Shasta Daisy 'Aglaia'): Double, frilly white flowers in late summer and autumn. Glossy green foliage. Fully hardy, dislikes soggy soils. Height to 50cm

Leucanthemum x superbum 'Banana Cream' (Shasta Daisy 'Banana Cream'): A more compact form of the Shasta daisy, with pale yellow daisy flowers, fading to cream. Dark green foliage. Hardy. Up to 45cm.

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

Ligularia dentata 'Desdemona' (Leopard plant 'Desdemona'): Large orange daisy-like flowers over rounded greeny-bronze foliage with purple undersides. To 1m. Hardy. [Collect Only]

Ligularia przewalskii: Elegant spikes of golden yellow flowers on black stems above very deeply divided green foliage.

Lobelia x speciosa 'Hadspen Purple' (PBR): Dramatic spikes of purple flowers in late summer, above lance-shaped purple flushed leaves. Needs damp soil in summer. Hardy. Up to 60cm.

Lobelia x speciosa 'Tania': Dramatic spikes of brightest pink flowers in late summer.

Lysimachia clethroides (Gooseneck Loosestrife): Spikes of white flowers arch over and tip up again, like a goose or swan neck. To 1m. Hardy

Molinia caerulea 'Heidebraut' (Purple moor grass 'Heidebraut'): Elegant flower stalks with slender purple flower heads in late summer. Makes an upright, vase shape. To 1.2m. Hardy

Molinia caerulea 'Poul Petersen' (Purple moor grass 'Poul Petersen'): Very handsome grass, much beloved by modern garden designers. Makes an upright, vase shape of burnished gold in autumn.

Molinia caerulea 'Transparent' (Purple moor grass 'Transparent'): Deciduous grass with long feathery purple flower spikes. Likes moist but well-drained soil in sun or light shade. Hardy. Up to 1.2m.

Panicum virgatum 'Heavy Metal' (Switch grass 'Heavy Metal'): Deciduous clump-forming grass with strappy blue-green leaves which turn a to purple/red, with clouds of airy flowers flushed purple. Hardy. Up to 1.5m

Panicum virgatum 'Northwind' (Switch grass 'Northwind'): Deciduous clump-forming grass, strappy green leaves which turn a yellow/ orange in autumn, airy panicles of flowers flushed pink. Hardy. Up to 1m.

Panicum virgatum 'Shenandoah' (Switch grass 'Shenandoah'): Deciduous clump-forming grass with strappy green leaves turning purple/red in autumn, airy panicles of flowers flushed purple. Hardy. Up to 1.1m.

Panicum virgatum 'Squaw' (Switch grass 'Squaw'): Deciduous grass with strappy green leaves which turn a purple red in autumn, with airy panicles of flowers flushed pink. Hardy. Up to 1m.

Pennisetum alopecuroides 'Hameln' (Fountain grass 'Hameln'): A deciduous clump-forming grass with spectacular feathery flowers tinged purple. Full sun. May need some protection in cold areas. Up to 1m.

Persicaria amplexicaulis 'Rosea' (Red bistort 'Rosea'): Spikes of pale pink flowers in late summer. Large oval pointed leaves. Grows in most situations as long as not too dry. Hardy. Up to 1.2m. [Collect Only]

Physostegia virginiana (Obedient plant): Spires of light pinkish purple flowers on slowly spiralling stems. [Collect Only]

Rudbeckia laciniata 'Herbstsonne': Very tall form adding impact to borders. Dark stems with vibrant yellow flowers with a green central cone. Hardy. Up to 2m.

Rudbeckia maxima (Great Coneflower): Very tall, upright Rudbeckia with large, bright yellow cones with black eyes in late summer

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 uliginosa (Bog Sage): Branched stems of clear blue flowers and lance-shaped leaves. Needs a sunny spot but with moist soil. Hardy. Up to 2m. AGM.

Sanguisorba 'Cangshan Cranberry' (Burnet 'Cangshan Cranberry'): Very tall reddish stems of burgundy-red bobbly flowers in late summer over blue-green leaves. Prefers moist soil. Hardy. Up to 2m.

Sanguisorba 'Chocolate Tip': Spikes of burgundy-red bobble-like flowers appear in late summer over green leaves tinged with brown. Hardy. Up to 1m. [Collect Only]

Sanguisorba 'Pink Tanna' (Burnet 'Pink Tanna'): Fluffy Pink flower bobbles mid-late summer over attractive fern-like foliage. Good in damp soil, sun or shade. Hardy. Up to 1m.

Sanguisorba 'Proud Mary' (Burnet 'Proud Mary'): Burgundy-red bobbly flowers appear in late summer over crinkled blue-green leaves. Long flowering. Hardy. Up to 60cm. [Collect Only]

Sanguisorba 'Tanna' (Burnet 'Tanna'): Spikes of burgundy-red bobbly flowers appear in late summer over crinkled blue-green leaves. Height to 50cm. Hardy.

Sanguisorba obtusa (Japanese burnet): Arching fluffy pink flower spikes in mid to late summer over crinkled grey green foliage. To 60cm. Hardy [Collect Only]

Solidago x luteus 'Lemore' (Goldenrod 'Lemore'): A shorter form of Goldenrod with panicles of bright lemon yellow daisy-like flowers. Great as a cutflower. Prefers a sunny spot. Hardy. Up to 60cm.

Sporobolus heterolepsis (prairie dropseed): Fine deciduous grass with green foliage in summer turning golden. Graceful flower heads in late summer. Needs sunny spot in well-drained soil. Hardy. Up to 1m.

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

Tricyrtis formosana 'Seiryu' (Toadlily 'Seiryu'): Upright stems of blue star-like flowers, often speckled with lilac and a paler centre. Above dark green spotted foliage. Hardy. Up to 60cm. [Collect Only]