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List
Geranium macrorrhizum 'Bevan's Variety'
A large, semi-evergreen variety forming a wide mat of aromatic, rounded leaves with deep purple-pink flowers in summer.
Geranium macrorrhizum 'Spessart'
A useful ground cover plant for dry and shady areas producing a wonderful carpet of aromatic leaves which take on good autumn colour and bearing white flowers in early summer.
Geranium phaeum 'Waterer's Blue'
An upright, clump-forming perennial with deeply-lobed, light green foliage producing slender stems topped with outward-facing, pale blue-violet flowers from late spring and into summer.
Geranium sylvaticum 'Album'
A spreading herbaceous perennial with deeply-divided and lobed foliage bearing small white flowers from late spring into early summer.
Geranium sylvaticum 'Ice Blue'
A compact, clump-forming herbaceous perennial with deeply-lobed green leaves producing very pale violet-blue flowers in spring and summer.
Geranium x magnificum 'Rosemoor'
A clump-forming herbaceous perennial with upright stems bearing hairy, lobed, aromatic foliage with violet-blue flowers with dark veining in summer.
Geum 'Lady Stratheden'
Bright yellow, semi-double flowers on arching stems from late spring to midsummer above rosettes of scalloped, green leaves.
Geum 'Mrs J. Bradshaw'
A clump-forming perennial which is very fast-growing, forming a dense carpet of scalloped leaves with semi-double, vivid scarlet flowers throughout summer.
Geum 'Pink Petticoats'
A compact perennial forming a clump of lobed leaves, with reddish brown stems topped with double, frilled, pink flowers with a lemon yellow centre in late spring and summer.
Geum 'Tales of Hex'
A mound-forming, semi-evergreen perennial with scalloped, green basal leaves producing semi-double to double, greenish-yellow flowers on wiry stems from late spring into summer.
Geum 'Totally Tangerine'
A useful perennial with scalloped green foliage and producing peachy orange flowers over an incredibly long season.
Geum rivale
A densely-foliaged plant ideal for the herbaceous border or even beside ponds, bearing pendulous dusky pink to pale orange flowers throughout the summer.
Helleborus x hybridus 'Single Slate'
Rich, dark plum-black flowers in late winter and early spring with bronze-tinted, leathery green foliage.
Hemerocallis 'Crimson Pirate'
Vivid red flowers with a bright yellow throat and central vein make for a striking plant for the summer boder.
Heuchera 'Cherry Cola'
A clump-forming perennial with reddish-brown leaves and dark red stems with panicles of small red flowers from late spring to early summer.
Hosta 'Big Daddy' (sieboldiana hybrid)
Very large, cupped and puckered, blue-green foliage with near white flowers in summer.
Hosta 'Blue Mouse Ears'
A miniature hosta with mounds of blue-grey leaves producing lavender-coloured flowers in summer.
Hosta 'Devon Green'
A clump-forming perennial with large, dark green, heart-shaped leaves, ideal for ground cover in shady, moist borders. In August it displays lilac flowers on upright stems.
Hosta 'Empress Wu'
An exceptionally large plantain lily with very lagre, thick, dark green, heart-shaped leaves with deep veins and producing lightly fragrant violet flowers in summer.
Hosta 'Frances Williams' (sieboldiana)
A clump-forming perennial with broad, heart-shaped and puckered, grey-green leaves with irregular yellow-green margins, producing pale lilac flowers in summer.
Hosta 'Royal Standard'
A vigorous, clump-forming herbaceous perennial with glossy, light green, heart-shaped leaves and in summer bearing tall spikes of fragrant white flowers.
Hosta 'Sum and Substance'
A clump-forming perennial with large, shiny, yellow-green, heart-shaped leaves and bearing pale lilac, bell-shaped flowers in summer.
Hosta 'Thunderbolt' (sieboldiana)
A strong-growing, clump-forming perennial with thick, rounded, deeply-veined and textured, blue-green leaves with central yellow streaking, producing pure white, funnel-shaped flowers in summer.
Hosta 'Wide Brim'
A clump-forming perennial with puckered, heart-shaped, dark green leaves with broad, creamy-yellow margins and in summer bearing pale lavender flowers on tall stems.
Hosta Patriot
A clump-forming perennial with rounded, heart-shaped leaves, edged white and bearing lavender-blue flowers on long stems in summer.
Knautia macedonica 'Mars Midget'
A shorter variety forming a clump of basal leaves with finely dissected foliage up the stems, topped with purplish-red, pincusion-like flowers from mid-summer into autumn.
Kniphofia 'Tawny King'
Upright perennial with tall spikes bearing orange buds opewning to creamy flowers in summer.
Leucanthemum x superbum 'Banana Cream'
A clump-forming perennial with narrowly elliptic, toothed, dark green leaves, producing semi-double, light yellow flowers on erect stems, fading to creamy-white as they mature.
Ligusticum scoticum
A compact, clump-forming upright perennial with thick, glossy green leaves bearing umbels of tiny white flowers from June to August followed by golden seed heads. It is predominantly found in Northern Europe and the far North of Britain.
Liriope muscari 'Big Blue'
An evergreen perennial with strap-shaped, glossy, dark green leaves producing dense spikes of purple-blue flowers in late summer and autumn, followed by bright purple berries.
Lobelia x speciosa 'Russian Princess'
An upright, herbaceous perennial with dark burgundy foliage and topped with deep, red-purple flowers from late summer and into autumn.
Lychnis coronaria
Vivid, rose-purple flowers on long stalks above silvery-grey, felted foliage in summer.
Lysimachia 'Candela'
A compact and clump-forming perennial with broad, lance-shaped, dark-green leaves producing dense racemes of saucer-shaped, white flowers in summer.
Lysimachia ciliata 'Firecracker'
Upright, herbaceous perennial with whorled, purple leaves with nodding, star-shaped, yellow flowers in summer.
Macleaya cordata
A tall perennial with lobed, grey-green foliage with white undersides, producing plumes of pendulous buff-white flowers in summer.
Mentha pulegium
A semi-evergreen perennial forming a mat of attractive, green leaves with a spearmint flavour. A great plant for the edge of the vegetable garden or indeed near a path in a damp spot as ground cover. It bears small purple flowers in summer.
Myrrhis odorata
Sweet Cicely is an erect, aniseed-scented perennial with bright green leaves. It bears umbels of pure white flowers followed by spindle-shaped fruits. The foliage is edible and is often used to flavour savoury dishes and also as a sweetener for fruit dishes.
Nepeta 'Six Hills Giant'
Spikes of lavender blue flowers throughout the summer above silvery aromatic leaves, makes this an attractive and robust catmint for the garden.
Nepeta racemosa 'Walker's Low'
A great form of catmint with aromatic, grey-green foliage and bearing clusters of blue flowers in summer which if cut back after flowering, will often reflower later.
Nepeta x faassenii 'Purrsian Blue'
A compact perennial, doubling its spread by its second year of growth. Greyish-green, toothed, aromatic leaves clothe the stems and densely-packed blue flowers with dark purple calyces are borne on upright spikes in summer and autumn.
This plant may be received cut back but it will soon begin to put on new growth.
Omphalodes cappadocica 'Cherry Ingram'
An evergreen perennial with finely hairy, dark green leaves producing an abundance of vivid blue, forget-me-not-like flowers in spring.
Ophiopogon japonicus 'Nanus'
A mound-forming, compact evergreen perennial with narrow, arching, dark green leaves occasionally producing racemes of small, white flowers, flushed purple in summer, followed by glossy, dark purple fruits.
Ophiopogon planiscapus 'Kokuryu'
An evergreen perennial forming dense, tufts of arching, strap-shaped black leaves. Small spikes of bell-shaped, pale mauve flowers form in summer, followed by glossy, black berries.
Origanum vulgare 'Compactum'
A bushy, woody-based perennial with aromatic green leaves producing loose sprays of tiny, pale pink flowers from summer into early autumn.
Parahebe catarractae 'Porlock'
Plentiful sprays of pale purple to lilac flowers cascading over spreading clumps of evergreen foliage.
Penstemon 'Rich Ruby
A tall, semi-evergreen perennial with narrow leaves, producing deep red, bell-shaped flowers from midsummer into autumn.
Penstemon 'White Bedder'
Shorter variety with lance-shaped foliage and spikes of small, foxglove-like, white flowers throughout summer.