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.

Aruncus 'Horatio' (Goat's beard 'Horatio'): A very elegant form of the familiar goat's beard, with fine sprays of creamy flowers in summer. To 1.2m. Hardy [Collect Only]

Aruncus dioicus (Goat's beard): Stately plant for larger borders or feature plant. Deeply divided foliage, frothy panicles of creamy white flowers in summer. Hardy. Up to 2m.

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.

Calamagrostis emodensis: Stunning grass with fluffy arching flowerheads mid-summer with pinkish tones maturing to gold then creamy white by autumn. Full sun, well drained soil. Ht 60-120cm Sp 30-60cm [Collect Only]

Campanula 'Kent Belle' (Bellflower 'Kent Belle'): Tall upright stems with deep violet, narrow drooping bell shaped flowers above dark green foliage. May need some support. Hardy. To 1.2m.

Caulophyllum thalictroides (Blue cahosh): Shade-loving with yellow-brown flowers in spring, followed by blue berry-like seeds in autumn. Attractive, divided blue-grey foliage. Hardy. Up to 1m. [Collect Only]

Digitalis grandiflora (Yellow foxglove): Perennial foxglove with yellow bell-shaped flowers above clumps of evergreen lance-shaped leaves. Bee-friendly. Hardy. Up to 1m. AGM

Dryopteris affinis 'Cristata The King': Tall, semi-evergreen fern with arching fronds,each leaflet is divided (Crested). Best in moist semi-shade. Hardy. Up to 1.2m.

Echinops bannaticus 'Blue Globe' (Globe thistle): Tall upright stems of bright blue globe flowers above clumps of spiny, grey-green leaves. Bee-friendly. Hardy. Up to 1.2m.

Echinops ritro 'Veitch's Blue' (Globe thistle): Dark blue spherical flower heads above attractive grey-green foliage. Loved by bees and butterflies. Hardy. Up to 1m

Euphorbia characias (Spurge): Evergreen perennial with blue-green leaves and lime-green flowers in early summer. Long-flowering. May self-seed. Prefers a sunny spot. [Collect Only]

Fuchsia magellanica 'Alba': Hardy fuchsia with white flowers tinged with pink. Deciduous shrub with lance shaped deep green leaves. Prefers a sheltered spot. Up to 1.2m. [Collect Only]

Geranium psilostemon (Armenian cranesbill): Big magenta flowers with shiny black eye. Tall and vigorous. To 1.2m. Hardy.

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.

Hemerocallis 'Stafford' (Day lily 'Stafford'): Large, velvety red flowers with a gold throat in mid-late summer. Height to 70cm. Hardy. [Collect Only]

Hemerocallis citrina (Long yellow day lily): Fragrant lemon, yellow lily flowers on long stems above green strappy foliage. Flowers open in evening. Hardy. Up to 1.2m.

Iris ensata 'Light at Dawn' (Japanese iris): Large, white, very open, almost flat flowers with purple picotee edging. Height to 90cm. Hardy. [Collect Only]

Iris sibirica 'Silver Edge' (Siberian Iris 'Silver Edge'): Rich purple flowers with a fine silver picotee petal edge. [Collect Only]

Leucanthemum x superbum 'Sonnenschein' (Shasta daisy 'Sonnenschein'): Shasta daisy with pale yellow flowers with golden centre. Excellent for cutting. Long flowering season. Hardy. Up to 90cm

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

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

Lychnis chalcedonica (Maltese cross): Domes of bright scarlet flowers with four petals, hence its common name. Excellent for adding height and bright colour in summer borders

Lythrum salicaria 'Blush' (Loosestrife 'Blush'): Tapering, sturdy spikes of soft pink flowers in mid to late summer. To 1.2m. Hardy

Lythrum salicaria 'Feuerkerze' (Loosestrife 'Firecandle'): Tapering, sturdy spikes of bright pink flowers in mid to late summer. To 1.2m. Hardy

Lythrum virgatum 'Dropmore Purple' (Wand loosestrife 'Dropmore Purple'): Upright spikes of purple-pink flowers in the mid-summer with lance-like foliage. Prefers a moist soil. Hardy. Up to 1m.

Miscanthus transmorissonensis: Tall elegant, evergreen grass with arching stems of silvery grey flower heads. Flowers held well above the foliage. Hardy. Up to 1.2m. [Collect Only]

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.

Monarda 'Schneewittchen' (Bergamot 'Schneewittchen'): Whorls of pure white flowers held high above aromatic foliage. Does well in sun or part shade and in moist soil. Attractive to bees. To 90cm. Hardy.

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.

Phlox paniculata 'Norah Leigh': A bold variegated phlox with pale pink almost white flowers with dark pink eye. Lovely fragrance. Hardy. Up to 1m.

Polygonatum verticillatum 'Rubrum': Tall upright dark-red stems with whorls of narrow leaves and bell shaped flowers flushed red. Good in shade. Hardy. Up to 1m. [Collect Only]

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. [Collect Only]

Sanguisorba officinalis 'Red Thunder' (Burnet 'Red Thunder'): Stems of dark-red bobble-like flowers above attractive divided foliage. Up to 1.2m. [Collect Only]

Stipa calamagrostis (Pheasant grass): Deciduous grass with narrow arching leaves and attractive feather-like flowers in summer. Can cope with dry soil. Hardy. Up to 1m.