Amsonia hubrichtii (Hubricht's bluestar): Clumps of soft feathery green foliage and palest blue star-like flowers in late Spring. Textural plant. Attractive autumn colour. Up to 60cm. Hardy

Anemone sylvestris (Snowdrop anemone): Large pure white flowers over a mound of green ferny foliage. Hardy. Up to 30cm.

Aquilegia 'Crimson Star' (Granny's bonnet. Columbine 'Crimson Star'): Two-toned flowers with red sepals, long spurs and white inner petals, held on tall stems above attractive ferny foliage. Hardy. Up to 90cm.

Bergenia cordifolia 'Vinterglod' (Elephant's ears 'Vinterglod' (Winterglow)): Dark, glossy green leaves, turning red in the winter. Dark red stems with dark pink bell-shaped flowers in Spring. Great ground-cover. [Collect Only]

Brunnera macrophylla 'Alexander's Great' (PBR) (Siberian bugloss 'Alexander's Great'): Statement foliage plant for shade. Large, heart-shaped, silver leaves. Light-blue forget-me-not-like flowers in Spring. Hardy. Up to 40cm.

Brunnera macrophylla 'Hadspen Cream' (Siberian bugloss 'Hadspen Cream'): Large, heartshaped green leaves with wide cream margin. Sprays of forget-me-not blue flowers in spring. Hardy. Up to 45cm.

Brunnera macrophylla 'Jack Frost' (PBR) (Siberian bugloss 'Jack Frost'): Large, heartshaped silver leaves with green veins and leaf edges. Sprays of forget-me-not blue flowers in spring.Shade-loving plant. Hardy. Up to 45cm.

Euphorbia amygdaloides var. robbiae (Mrs Robb's bonnet): Great plant for difficult dry, shady areas. Evergreen dark-green leaves and vibrant lime-green flowers in spring. Suckers and can spread.

Euphorbia characias Silver Swan = 'Wilcott' (PBR) (Spurge 'Silver Swan'): A striking, variegated form with blue-green leaves edged in white. Green and white flowering bracts in late Spring.

Euphorbia myrsinites (Spurge): Sprawling stems of glaucous leaves and acid green flowers in spring. Prefers full sun and good drainage. Hardy. Up to 30cm.

Euphorbia palustris (Marsh spurge): Bright acid green bracts in spring. Height to 90cm. Hardy. [Collect Only]

Euphorbia palustris 'Walenburg's Glorie' (Marsh spurge 'Walenburg's Glorie'): Bright acid green bracts in spring, creating vibrant clumps of flowers. A warmer yellow than the species. Good on moist soils. Hardy. Up to 1m.

Geranium phaeum 'Raven' (Dusky cranesbill 'Raven'): Dark purple flowers with long stamens and swept-back petals held high above soft green foliage. Great for shady areas. To 60cm. Hardy.

Helleborus x sternii (Stern's hybrid hellebore): Evergreen perennial with blue-green leaves, purple stems and pale green bowl shaped flowers. Needs a sheltered spot. Up to 35cm.

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]

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.

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 lactiflora 'Bowl of Beauty' (Peony 'Bowl of Beauty'): Huge sugar-pink petal bowls filled with ripples of yellow ribbony bits. Swoon-worthy. [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 'Alba Plena' (Peony 'Alba Plena'): Sumptuous, large double white flowers above green foliage in May. A traditional cottage garden plant. May need support. [Collect Only]

Paeonia officinalis 'Rubra Plena' (Peony 'Rubra Plena'): The classic deep red double paeony. Deeply divided leaves unfurl in spring. Max Height 90cm. Flowers April to May. Full sun/partial shade. [Collect Only]

Primula denticulata var. alba (Drumstick primula - white): Pure white balls of flowers on sturdy stems. To 25cm. Hardy

Primula elatior (Oxslip): Pale yellow, primrose colour flowers in clusters on gently arching stems.

Primula sikkimensis (Himalayan cowslip): Tall stems with clusters of pendulous pale yellow funnel-shaped scented flowers, rising from a rosette of green leaves. Up to 40cm.

Pulsatilla vulgaris 'Alba' (Pasque flower - white): Large cup shaped white flowers over soft ferny foliage. Thrives in sunny, well drained spots.

Saxifraga 'Winifred Bevington' (Saxifrage 'Winifred Bevington'): Rosettes of green fleshy leaves, wiry stems topped with white and pink flowers in spring.