Acanthus mollis (Bear's Breeches): Architectural spires of purple/white flowers over large, dark green deeply divided leaves. Best in sun or light shade. Height to 1.2m.

Acanthus mollis (Latifolius Group) 'Rue Ledan (Bear's Breeches 'Rue Ledan'): Architectural spikes of hooded pure white spiny flowers over large, soft, bright green leaves. Best in sun or part shade. Height to 1.2m [Collect Only]

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]

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]

Calamagrostis x acutiflora 'Overdam' (Feather-reed grass 'Overdam'): Deciduous grass with upright clumps of narrow cream-striped leaves with stems of purplish flowers, which fade to blond through winter. Hardy. Up to 1.2m. [Collect Only]

Campanula persicifolia (Peach-leaved bellflower): Tall spikes of large, cup-shaped blue flowers over slender foliage in mid-summer. To 1.2m. Hardy

Chasmanthium latifolium (Spangle grass): Deciduous perennial grass, with arching stems of flattened spikes. Bronze tints in Autumn. Moist, well-drained soil. Hardy. Up to 1m. [Collect Only]

Deschampsia cespitosa (Tufted hair grass): Summer flowering grass with airy silvery purple flower heads which keep their structure long into winter. Hardy. Up to 1.2m. [Collect Only]

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. [Collect Only]

Fuchsia 'Hawkshead': One of the hardier Fuchsias. Dark green foliage and dainty white flowers, tinged with green. Need a sheltered spot. Up to 1m.

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.

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

Kniphofia 'Alcazar' (Red hot poker 'Alcazar'): Tall spikes of vibrant red-orange flowers opening to a paler yellow to give a two-tone effect. Strappy green foliage. Hardy. Up to 1.2m. [Collect Only]

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 [Collect Only]

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.

Lychnis coronaria Gardeners' World = 'Blych' (Rose campion 'Gardeners' World'): A lovely double form of the more common single flowered plant. Stunning darkest pink flowers over silver leaves

Morina longifolia: Whorls of white tubular flowers which age to pink, above prickly rosettes of glossy dark green aromatic leaves. Hardy. Up to 90cm.

Perovskia 'Blue Spire' (Russian Sage 'Blue Spire'): Fine spikes of purple flowers on silver stems. Lovely winter stem effect. Hardy. Up to 1m. [Collect Only]

Poa labillardierei (Blue tussock grass): Elegant, upright grass with slender blue-green leaves. Arching, open biscuity-coloured panicles in mid-summer. Evergreen.To 1.2m Hardy [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. [Collect Only]

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