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Acaena buchananii
Mats of pale grey-green leaves and round heads of flowers.
Acaena magellanica
One of the very few flowering plants from South Georgia. Rusty brown burrs.
Acaena microphylla 'Kupferteppich'
A low-growing mat of fine bronze leaves with small yellow flowers and red burrs.
Acaena ovalifolia
Trailing alpine with small flowers followed by burrs of seedheads.
Acaena saccaticupula
Blue-grey foliage contrasts with short-stemmed red/bronze flowers and burrs.
Achillea 'Terracotta'
Large flat heads of burnt orange flowers over feathery leaves.
Achillea 'Walter Funcke'
Orange-red flowers over silver-green foliage.
Aciphylla aurea
Very sharply pointed leaves producing a dramatic spike of tiny flowers.
Aconitum anthora
Pale yellow flowers monkshood flowers and deeply cut blue-green foliage.
Aconitum carmichaelii
Spikes of large, blue, hooded flowers in summer; attractive glossy green leaves.
Aconitum carmichaelii Arendsii Group
Spikes of large, blue, hooded flowers in summer; attractive glossy green leaves.
Aconitum hemsleyanum
Lovely climber with dark purple-blue monkshood flowers.
Aconitum napellus 'Rubellum'
Monkshood with spikes of red hooded flowers.
Aconitum napellus subsp. vulgare
A monkshood with compact spikes of violet to deep blue flowers.
Aconitum piepunense
Rare tall perennial with loose spires of light blue hooded flowers.
Aconitum x cammarum 'Bicolor'
Dense clusters of rich blue-and-white monkshood flowers.
Actaea simplex 'Brunette'
Tall bottlebrush heads of pinkish white flowers above dark divided leaves.
Actaea simplex 'Pink Spike'
Dramatic perennial with spikes of ponk flowers, pale then darkening.
Adenophora khasiana
Exquisite tall spikes of lavender blue open bell-flowers
Adenophora liliifolia
Leafy stems with drooping bell-shaped blue flowers, lightly scented.
Adenophora tashiroi
Herbaceous campanula relative with spikes of purple flowers.
Adenophora triphylla
Erect stems with whorls of tubular blue flowers.
Aegopodium podagraria 'Variegatuma'
variegated ground elder, with splashes of creamy white on deep green leaves
Agapanthus 'Albus'
Clump-forming perennial with umbels of bell-shaped white flowers.
Agapanthus 'Lilliput'
Compact clump of slender leaves with small umbels of dark blue flowers.
Agapanthus 'Midnight Blue'
prolific heads of deep violet-blue flowers, and deeper blue mid-ribs.
Agapanthus praecox
Strap-like leaves and rich, dramatic blue flowers
Agapanthus 'Silver Moon'
Agapanthus 'Torbay'
NEW
prolific heads of spherical mid sky-blue flowers, and deeper blue mid-ribs.
Agave parryi
Numerous creamy yellow flowers opening from pink-tinged buds.
Ajuga pyramidalis 'Metallica Crispa'
NEW
Slightly metallic dark purple leaves below small blue flowers.
Ajuga reptans
Low mats of bronze foliage with spikes of blue flowers.
Ajuga reptans 'Catlin's Giant'
Dark red-green leaves and spires of blue flowers; excellent ground cover.
Ajuga reptans 'Valfredda'
Tiny mounds of narrow, chocolate-coloured leaves; spikes of dark blue flowers.
Allium carinatum subsp. pulchellum f. album
Heads with masses of white flowers on long, arching pedicels.
Allium cyatophorum var. farreri
Compact species for the rock garden; nodding clusters of deep purple flowers.
Allium hollandicum 'Purple Sensation'
Onion with dramatic heads of purple flowers.
Allium moly
Bright golden yellow flowers above lance-shaped grey-green leaves.
Allium schoenoprasum
Chives; narrow leaves topped with small, dense umbels of purple flowers.
Alnus maximowiczii
NEW
Alder tree from Japan with showy green-yellow catkins in spring
Anacyclus pyrethrum var. depressus
Mat of highly dissected leaves, large daisies with red buds.
Anchusa azurea 'Loddon Royalist'
Spikes with masses of bright blue flowers.
Andromeda polifolia 'Alisa'
Low ericaceous shrublet with many small, bright pink, goblet-shaped flowers.
Andromeda polifolia 'Grandiflora'
Large clusters of pale pink flowers growing from glaucous green foliage.
Androsace adenocephala
Clusters of white to pink flowers on short stems over bright green rosettes.
Androsace carnea subsp. brigantiaca
White flowers over dark green foliage.
Androsace lanuginosa
Pale pink flowers with greeny yellow eyes in compact umbels.
Androsace muscoidea
Mat of hairy rosettes, short-stemmed white flowers with a yellow eye.
Androsace sempervivoides
Low mat of rosettes with pale pink flowers.
Androsace sempervivoides 'Susan Joan'
Fine Androsace studiosorum type with bright pink flowers.
Androsace strigillosa
Loose heads of white flowers with gorgeous dusky pink under the petals.
Androsace studiosorum
Low mat of rosettes with bright pink flowers with a yellow eye.
Anemone barbulata
Clusters of numerous blue-backed, pure white flowers.
Anemone blanda blue-flowered
Woodland ground cover; range of blues, including pale blue.
Anemone blanda 'White Splendour'
Woodland ground cover; large white flowers.
Anemone caroliniana
Glossy, deeply divided leaves and creamy white cupped flowers.
Anemone cf. rivularis
White flowers with blue/purple flushed buds.
Anemone coronaria 'The Admiral'
Large semi-double violet flowers.
Anemone drummondii
Divided leaves and creamy white flowers.
Anemone leveillei
Waxy, white flowers flushed lilac on the back.
Anemone lithophila
NEW
Lovely golden-eyed white flowers over deeply serrated foliage.
Anemone lyallii
The western wood anemone, with pale blue, pink or white flowers.
Anemone multifida
Hairy, multiply divided leaves and creamy yellow flowers.
Anemone multifida Annabella Series
Upright stems with several deep rose pink flowers above multiply divided leaves.
Anemone multifida 'Rubra'
A less common form, with crimson red flowers.
Anemone multifida var. globosa
Hairy, multiply divided leaves and cup-shaped rich pink-red flowers.
Anemone narcissiflora
Showy white flowers, yellow in the centre and pink-tinged on the reverse.
Anemone nemorosa
The wood anemone, with starry, pink-flushed white flowers.
Anemone nemorosa 'Bracteata Pleniflora'
White flowers tipped with green, with a ruff of green bracts.
Anemone nemorosa 'Robinsoniana'
Wood anemone form with pale sky blue flowers.
Anemone nemorosa 'Vestal'
Beautiful wood anemone with double white flowers.
Anemone parviflora
Short erect stems with large, solitary white flowers; from sub-arctic regions.
Anemone polyanthes
Lovely white flowers over serrated green, hairy leaves.
Anemone ranunculoides 'Pleniflora'
Wood anemone with double yellow flowers.
Anemone ranunculoides subsp. ranunculoides
Deep yellow flowers over attractive dissected foliage.
Anemone reflexa
One to three white flowers with reflexed petals per stem.
Anemone rivularis
Lovely white flowers, steely blue-grey on the back (and in bud).
Anemone x hybrida 'Honorine Jobert'
Pure white flower above deeply cut leaves.
Anemone x hybrida 'Queen Charlotte'
Herbaceous perennial with many large, semi-double pink flowers.
Anemone x lesseri
Anemone with deeply divided leaves and bright red flowers.
Anemone x lipsiensis 'Pallida'
Pale yellow hybrid between white A. nemorosa and yellow A. ranunculoides.
Anemonopsis macrophylla
Nodding, cup-shaped, pink flowers with lilac sepals.
Angelica archangelica
Architectural plant with large rounded umbels of greenish yellow flowers
Antennaria dioica rosea
Mat of fine grey leaves with spikes of pink flowers.
Anthericum liliago
St. Bernard's lily; stems of starry white flowers.
Anthericum ramosum
White, starry flowers; petals curve back when fully open.
Anthyllis vulneraria var. coccinea
Variety of kidney vetch with bright red flowers.
Antirrhinum molle
Soft grey leaves and pink or white snapdragon flowers.
Aquilegia aurea
A columbine with pale yellow hooded flowers.
Aquilegia bertolonii
Dwarf species with purplish blue spurred flowers.
Aquilegia buergeriana
Compact clump of foliage with maroon and yellow flowers on slender stems.
Aquilegia canadensis
Red flowers with yellow centres.
Aquilegia canadensis 'Nana'
Dwarf form; red flowers with yellow centres.
Aquilegia chaplinei
Rich yellow, long-spurred flowers, like a smaller version of A. chrysantha.
Aquilegia coerulea
Blue sepals, long-spurred, and white petals; from the Rocky Mountains.
Aquilegia elegantula
Red flowers with yellow centres.
Aquilegia flabellata var. pumila
Blue flowers with white centres; dwarf.
Aquilegia flabellata var. pumila f. alba
White-flowered form of this dwarf species.
Aquilegia flavescens
A yellow columbine from the mountain meadows of the Rockies.
Aquilegia formosa
Fabulous flowers of orange, red and yellow; a striking addition to the border.
Aquilegia fragrans
Scented creamy white flowers.
Aquilegia jonesii x saximontana
Dwarf, with white-centred blue flowers above grey-green leaves.
Aquilegia karelini
Abundant, deep violet flowers with neat foliage.
Aquilegia kuhistanica
Dwarf form of Aquilegia vulgaris with inky-blue flowers.
Aquilegia laramiensis
Elegant, creamy white flowers on slender branched stems.
Aquilegia oxysepala var. kansuensis
Lovely burgundy flowers with yellow cups and curved spurs.
Aquilegia 'Red Hobbit'
Bushy, dwarf variety with brilliant cream and crimson flowers.
Aquilegia rockii
Elegant, dusky purple flowers on slender branched stems.
Aquilegia saximontana
Flower colours vary from light blue to violet to cream; blue-green leaves.
Aquilegia sibirica
Large, lilac-blue flowers above the foliage in spring.
Aquilegia yabeana
Long-spurred flowers of the deepest ink blue.
Arabis soyeri jacquinii
Shiny deep green foliage with beautiful white flowers
Arenaria festucoides
Pretty white flowers over dense hummocks of narrow foliage.
Arisarum proboscideum
Low mat of leaves and small ‘mouse’ flowers, brown and white with a long tail.
Armeria juniperifolia
Clump-forming thrift with a profusion of pink flowers.
Armeria maritima 'Morning Star'
NEW
'Sea pink', with white button flowers over grassy foliage.
Armeria maritima subsp. andina
A form of 'sea pink', with pink button flowers over grassy foliage.
Armeria maritima subsp. sibirica
NEW
'Sea pink', with pale pink button flowers over grassy foliage.
Armeria tweedyi
Thrift with mounds of blue-green grassy leaves, and heads of rose-pink flowers
Arrhenatherum elatius var. bulbosum `Variegatum`
Bulbous oat grass; stripy leaves with attractive seed heads.
Artemisia stelleriana
Soft silver-grey foliage plant.
Aruncus dioicus
Goatsbeard; feathery cream heads above attractive green serrated foliage.
Aruncus 'Guinea Fowl'
NEW
Feathery panicles of white flowers; yellow autumn foliage.
Asarum canadense
Canadian wild ginger; kidney-shaped leaves with hairy, purple cupped flowers.
Asarum caudatum
Low evergreen woodlander with rusty brown flowers hiding under the leaves.
Asarum europaeum
An evergreen, creeping plant that has exotic hooded purple-red flowers.
Aster alpinus
Daisy flowers with lavender ray florets.
Aster frikartii 'Mönch'
Sprays of lavender-blue daisy flowers in late summer; attractive foliage.
Aster likiangensis
White ray flowers, but with few rays per head.
Aster 'Schneekissen'
Low-growing compact perennial with white daisy flowers.
Aster 'Small-Ness'
Low-growing perennial with pale blue flowers with reddish centre.
Aster stracheyi
Creeping variety with pale lilac flowers.
Aster tongolensis
Large purple daisies with yellow centres on upright stems.
Astilbe chinensis var. pumila
Dwarf form with pink flowers tightly packed along stem and short side branches.
Astilbe japonica hybrid pink form
Tall spikes of pink feathery flowers above delicate cut leaves.
Astilbe 'Willie Buchanan'
Dwarf variety with very pale pink feathery flowers and tufted bronze foliage.
Astilbe x arendsii 'Brautschleier'
Clump-forming perennial with elegant sprays of of nodding white flowers.
Astilbe x arendsii 'Fanal'
Dense plumes of deep red flowers.
Astilboides tabularis
Tall panicles of small, creamy flowers.
Astrantia bavarica
Ruff of green and white bracts around pale pink flowers.
Astrantia carniolica 'Rubra'
Dwarf astrantia with long-lasting red flowers.
Astrantia major 'Alba'
Masterwort with white flowers tipped with green.
Astrantia major 'Claret'
Deep, ruby-red flowers with a ruff of long bracts.
Astrantia major 'Rubra'
Dark red-pink flowers with a ruff of long bracts.
Astrantia 'Roma'
Clump-forming perennial with umbels of small, pink, papery flowers.
Aubrieta pinardii
Spreading mat with lots of pinky purple flowers.
Aubrieta 'Royal Blue'
Mat-forming with abundant rich blue 4-petalled flowers.
Azorella trifurcata
A low, evergreen perennial, with lime-yellow flowers.
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