Acacia baileyana purpurea Graceful evergreen shrub with fern-like, grey-green foliage, flushed purple. Golden yellow 'mimosa' flowers.
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Acanthus spinosus Large, deeply lobed and spine-tipped, dark glossy green leaves. Spikes of white flowers with spiny purplish bracts.
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Achillea 'Terracotta' Flat heads of terracotta flowers fading to cream.
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Aconitum napellus subsp. vulgare 'Albidum' Dense spires of creamy white flowers.
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Actaea simplex 'Black Negligee' Dramatic, black foliage. Creamy-white bottlebrush flowers.
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Actaea simplex 'Pink Spike' Dramatic perennial. Scented bottlebrush-like flowers emerge pale pink and darken with age.
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Agapanthus 'Gayle's Lilac' Lilac-blue flower heads, although small make a good display from many stems. Good in pots. Semi-evergreen. Compact.
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Agastache 'Firebird' Grey-green, mint-scented leaves and dense spikes of tubular, soft orange flowers.
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Agastache rugosa 'Golden Jubilee' Gold, aniseed scented leaves turning lime green later in summer. Fluffy lavender flowers. Bee friendly.
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Ageratina altissima 'Chocolate' Sprays of white flowers. Chocolate foliage.
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Ajuga reptans 'Braunherz' Deep purple leaves. Deep blue flower spikes. Mat-forming evergreen.
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Albuca glauca Vigorous half-hardy bulb from South Africa. Greenish-white flower spikes over greyish leaves.
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Albuca nelsonii White scented flowers from green tipped buds over glossy leaves.
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Albuca shawii South African bulb. Scented, bell-shaped yellow flowers.
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Alcalthaea 'Parkallee' Similar to hollyhocks but no rust! Lovely semi-double pale flowers with maroon stamens.
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Alchemilla erythropoda Pretty mini form of alchemilla mollis. Small, yellow-green flowers on reddish stems. Clump-forming.
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Allium 'Purple Rain' Heads of rich, deep purple-violet, starry flowers like sparklers. Allium 'Purple Sensation' x cristophii.
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Allium albopilosum (syn cristophii) Large heads of starry, silvery-lilac flowers on stocky stems. Long-lasting and excellent dried. Foliage dies down before flowering.
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Allium hollandicum 'Purple Sensation' Large round heads of deep purple flowers.
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Allium stipitatum 'Violet Beauty' Violet-purple flowers. Long lasting and excellent dried.
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Alstroemeria 'Indian Summer' Dark buds open to orange-red flowers from May onwards.
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Alstroemeria psittacina 'Royal Star' Branched clusters of dark red flowers over leaves with irregular cream edges.
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Amarcrinum memoria-corsii 'Howardii' Amaryllis/Crinum hybrid. Clear pink, fragrant flowers. Frost hardy.
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Amarine tubergenii 'Zwanenburg' Spectacular, trumpet-shaped, dusky pink flowers. Needs short dry dormancy in summer to flower.
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Amarine tubergenii 'Belladiva' Amaryllis x nerine. Pink lily-like flowers.
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Amaryllis belladonna Funnel-shaped, fragrant pink flowers on each stem open before leaves appear.
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Amorphophallus konjac Voodoo lily. Exotic looking bulbous perennial. Reddish-purple spathe with dark brown spadix followed by large spotted leaves.
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Anemone 'Wild Swan' White flowers with blue bands on reverse over a long period.
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Anemone blanda 'White Splendour' Known as the Winter Windflower. Large, pure white flowers.
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Anemone blanda Blue Shades Hardy, herbaceous perennial. Delicate blue flowers.
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Anemone blanda var. rosea 'Pink Star' Large, bright purple-pink starry flowers. Ideal for rockeries and naturalising in grass.
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Anemone De Caen 'Mr Fokker' Velvety, violet-blue flowers. Good in borders or containers.
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Anemone De Caen 'Sylphide' Single, shocking pink flowers. Good in borders or containers - and for cutting.
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Anemone multifida 'Rubra' Rich rose-coloured, buttercup-like flowers with yellow stamens over ferny foliage.
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Anemone x hybrida 'Honorine Jobert' Pure white, saucer-shaped flowers with yellow stamens.
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Angelica sylvestris 'Ebony' Architectural umbellifer. Almost black, finely cut leaves. Sprays of pink flowers. Usually grown as a biennial. Collect seed.
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Anisodontea 'El Rayo' Sub-shrub from South Africa. Large, pink, hibiscus-shaped flowers with darker centres. Often flowers all year round!.
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Aquilegia vulgaris 'Ruby Port' Fully double, deep maroon, nodding flowers on upright stems.
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Aquilegia vulgaris 'Black Barlow' Double, upright purple-black flowers.
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Arthropodium candidum 'Maculatum' Bulbous perennial from New Zealand. Speckled brown foliage. Tiny white flowers. Good in pots.
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Arthropodium candidum 'Little Lilia' Tufted, white edged foliage. Short heads of starry white flowers. Protect from hard frosts.
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Arthropodium cirratum New Zealand perennial. Starry, white flowers. Drought-resistant.
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Aruncus 'Horatio' Cream plumes on bronze stems over attractive, divided green-gold foliage.
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Asclepias tuberosa Unusual flower heads of brilliant orange. Attractive to butterflies and bees.
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Asphodeline lutea Fragrant, yellow, star-shaped flowers on upright spikes. Evergreen leaves.
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Aster 'Little Carlow' Masses of bright blue daisies in large sprays.
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Aster 'Vasterival' Masses of delicate heads of pale lilac-pink daisies on dark stems.
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Aster ageratoides 'Asran' Masses of lavender-blue daisies with yellow eyes Bushy, upright form. Easy and reliable.
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Aster frikartii 'Monch' Sprays of large, long-lasting, lavender-blue flowers with yellow centres. No staking or mildew.
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Aster novae-angliae 'Purple Dome' Compact variety. Violet-purple flowers with yellow centres.
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Aster novae-angliae 'Roter Stern' Purple-pink flowers. Low maintenance perennial for back of border.
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Aster novi-belgii 'Marie Ballard' Sprays of large, clear lavender-blue, double flowerheads.
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Aster pyrenaeus 'Lutetia' Loose mounds on graceful wiry stems smothered in large, pale lilac-blue daisies. Flowers last for weeks in the garden.
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Astilbe 'Sprite' Dwarf variety. Graceful branching sprays of delicate shell-pink flowers.
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Astrantia 'Gill Richardson' Attractive, dark red flowers. Clump-forming. Wildlife friendly.
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Astrantia 'Mrs MaGregor' Large, silvery-pink pincushion.
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Astrantia ''Warren Hills'' Large, pale pink flowers fading to white.
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Astrantia major 'Penny's Pink' Rich pink flowers surrounded by paler bracts with deeper pink veins. Free-flowering.
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