Clump Forming

Astilbe chinensis 'Hot Pearls'

…Blooming in summer, this hardy perennial makes an appealing cut flower that adds a frothy feel to a vase or bouquet. The bright green foliage forms a dense clump which contrasts well with its showy summer display. Astilbe chinensis 'Hot Pearls' is ideal for planting in lightly shaded spots with a…  More Info

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Ophiopogon planiscapus 'Nigrescens'

This striking evergreen perennial forms clumps of smooth matt-black, grass-like leaves from which rise dainty stems of contrasting mauve flowers in summer. The bell-shaped blooms are followed by dark inky-blue berries which persist throughout winter for added interest. A stunning contrast to any…  More Info

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Umbrella Bamboo

…where it's dense foliage make it perfect for filtering out noise and pollution. Reaching over 2 metres in height, this elegant shrub easily forms clumps of gently bending green-yellow canes, whose shape gives it the name Umbrella Bamboo. Fargesia murieliae has a wonderfully exotic, tropical…  More Info

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Red Hot Poker 'Mango Popsicle'

…over an incredibly long period - from midsummer through to October! Part of the Kniphofia 'Popsicle series', Red Hot Poker 'Mango Popsicle' forms clumps of slender, evergreen grass-like leaves which remain neat and attractive throughout the seasons. With origins in South Africa, these dwarf red…  More Info

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Lupin 'Russell Hybrids'

…the middle and back of borders or planted in groups at the edge of woodland areas. Tall spires of tightly packed flowers rise above clumps of palmate foliage to form a distinctive hardy perennial that requires no staking. This Lupin mix remains a traditional cottage garden favourite. Ht. 75-90cm.…  More Info

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Stipa tenuissima

…wispy, arching strands of foliage form neat clumps that sway and billow in the breeze. Stipa tenuissima is surprisingly drought tolerant, making a useful choice for thin, free-draining soils and coastal locations. Once established it will happily seed about to form immensely tactile drifts. Height:…  More Info

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Solidago 'Yellow Stone'

Through June and July, masses of yellow racemes rise up on erect woody stems from this clump-forming perennial. Solidago ‘Yellow Stone’ is smaller and less invasive than older cultivars, and works particularly well in naturalistic, prairie-style schemes alongside other late performers…  More Info

Just£19.99

Stachys macrantha 'Superba'

Superb by name and superb by nature, Stachys macranthra ‘Superba’ provides dependable ground cover beneath shrubs and roses and makes a long-season front of border feature. Related to our native betony and equally attractive to butterflies and bees, this clump-forming perennial produces…  More Info

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Silene alpestris 'Starry Dreams'

…‘Starry Dreams’ produces a profusion of delicate star-shaped white flowers from July to October. This elegant hardy perennial forms low, compact clumps of evergreen foliage from which flowers are borne on short, straight stems. This alpine catchfly is very easy to grow and its…  More Info

Just£19.99

Campanula glomerata Alba

This fast growing and easy perennial will quickly spread to form low clumps of heart-shaped foliage. Throughout summer, upright stems bear rounded clusters of sparkling white, bell-shaped flowers which face upward. An excellent flower for bees and a lovely addition to bouquets. Perfect for running…  More Info

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Hemerocallis 'Tropical Surprise'

…with deep purple centres and rippled margins will bloom from midsummer until autumn on compact plants with arching, strap-like leaves which form a neat clump. Hemerocallis are long-lived and reliable hardy perennials which are easy to grow, tolerating even difficult clay soils and demanding very…  More Info

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Alstroemeria 'Summer Saint'

…will keep blooming for up to 5 months! Perfect for bringing a tropical feel to borders and containers, and adding an exotic flavour to summer bouquets. This glamorous perennial will form an attractive clump of glossy foliage, getting bigger and better each year. Height: 70cm (27). Spread: 50cm (19).  More Info

Just£11.99

Anemone coronaria 'Lord Lieutenant'

A bold and beautiful variety with impressive double blooms that make fabulous cut flowers. Anemone coronaria 'Lord Lieutenant' forms a neat and bushy clump of delicately cut foliage at the front of borders. When planted in autumn it produces a lovely display of spring blooms. Spring planting results…  More Info

Just£5.99

Sisyrinchium californicum 'Brachypus'

This adaptable plant will grow in the border as well as making a lovely pond marginal. Sisyrinchium californicum ‘Brachypus’ forms low clumps of semi-evergreen, sword-shaped, grey-green leaves. From late spring through early summer, it produces upright stems each topped with star-shaped,…  More Info

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Armeria maritima

…wildflower can be seen nestling on rocky cliffs along the coastline where its evergreen, grassy foliage is highly resistant to salt-spray. It forms neat clumps from which spring pink pom-pom flowers on slender stems from April to July. This reliable perennial is ideal for coastal gardens, rock…  More Info

Just£19.99

Geranium sanguineum 'Appleblossom'

…Geranium sanguineum ‘Appleblossom’ is a low-growing, hardy geranium that is perfect for border edges, dry banks and rockeries. It forms low clumps of finely-divided leaves, making excellent groundcover. From late spring to summer, it bears a profusion of saucer-shaped, pale pink flowers…  More Info

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Astilbe 'Astary Rose'

…to pondsides, boggy areas and damp borders even in shady spots. In late summer it produces feathery plumes of scented, deep rose-pink flowers held above clumps of handsome, deeply divided, glossy leaves. Its compact form makes it perfect for smaller borders. Height and spread: 30-40cm (12-16in).  More Info

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Astilbe 'Astary White'

…boggy areas and damp borders and will even thrive in shady spots. In late summer it produces feathery plumes of scented, pure white flowers held above clumps of handsome, deeply divided, glossy leaves. Its compact form makes it perfect for smaller borders. Height and spread: 30-40cm (12-16in).  More Info

Just£19.99

Aquilegia 'Pretty Bonnets Mix'

…Aquilegia 'Pretty Bonnets Mix' is a reliable and easy to grow mix, returning year after year in a wide range of colours. This hardy perennial forms an airy clump of attractive foliage that makes a charming display when grown in large swathes, or dotted through the front of borders. Height: 90cm…  More Info

Just£2.49

Sisyrinchium palmifolium 'Canary'

This showy perennial is sure to grab the limelight at the front of your sunny borders. Slender blue-green foliage forms a dense clump over time, reminiscent of Iris, to which it is closely related. Once it begins to flower, there?s really no mistaking Sisyrinchium palmifolium 'Canary' for anything…  More Info

Just£1.00

Dryopteris atrata

…scaly stems. Dryopteris atrata is perfect for a woodland border or shady patio pot, even coping with full shade. A relatively large fern it forms a robust clump making a handsome structural plant that provides lush, green foliage in dark corners. Semi-evergreen. Height and spread: 60-80cm (24-80in).…  More Info

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Coreopsis verticillata 'Zagreb'

…Coreopsis verticillata 'Zagreb' produces hundreds of daisy-like golden yellow blooms throughout summer. This hardy herbaceous perennial forms bushy yet airy clumps of feathery leaves and well-branched flowering stems for maximum impact! Coreopsis verticillata 'Zagreb' works well in prairie style…  More Info

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Cortaderia selloana 'Golden Fantasy'

Forming a strong clump of gold-striped foliage, Cortaderia selloana ‘Golden Fantasy’ glows in the afternoon light. From August to November, it bears erect white plumes on stems up to 1.5m high. These long-lasting plumes and evergreen foliage provide interest and colour into the winter.…  More Info

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Sunflower maximiliani 'Early Bird'

…A breakthrough from T&M's own breeding programme, flowering earlier and for longer than other Helianthus maximiliani varieties, this hardy perennial variety will also return each year, gradually forming bigger and more impressive clumps each time. Height: 75-100cm (30-39?). Spread: 50cm (20?).  More Info

Just£2.99

Agastache aurantiaca 'Apricot Sprite'

Tubular blooms of apricot orange form dense flower spikes above clumps of silvery green, richly aromatic foliage. Agastache aurantiaca 'Apricot Sprite' is compact and quick growing - the perfect choice for beds and containers or filling gaps in borders. Bred and selected by T&M, this free flowering,…  More Info

Just£1.00

Nepeta nervosa

…butterflies and make an excellent addition to cut flower bouquets. The narrow green leaves are highly fragrant. Using underground runners, this lovely nepeta will form a dense, bushy clump that makes a wonderful addition to the front of a sunny, well-drained border. Height and spread: 45cm (18in).  More Info

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Dianthus 'Diane'

Dianthus 'Diane' has large, salmon-pink double blooms with a delicious clove fragrance. With a vigorous habit, this RHS AGM variety quickly forms clumps of slender grey-green leaves, and flowers over a long period throughout the summer. Also known as Pinks, these hardy evergreen perennials are an…  More Info

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Astelia 'Red Shadow'

A striking variety with copper-red foliage. Astelia 'Red Shadow' is a choice perennial for evergreen structure, colour and texture. It forms clumps of large, arching, sword-like leaves that are useful for for injecting dramatic, spikey accents amongst low mounding plants. Its red colouring contrasts…  More Info

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Dryopteris erythrosora var. koidzumiana

…distinguished by its brilliant red fronds that transition to glowing shades of pink, gold and copper before maturing to green. This graceful fern forms clumps of triangulate, glossy fronds that are slenderer and more regular than the species. Dryopteris erythrosora var. koidzumiana is easy to grow…  More Info

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Astelia 'Silver Shadow'

…particularly good silver colouring. Astelia ‘Silver Shadow’ is a choice perennial for evergreen structure, colour and texture. It forms clumps of large, arching, sword-like leaves in a shimmering silver. It is great for injecting dramatic, spikey accents amongst low mounding plants and…  More Info

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Penstemon barbatus var. praecox

…tubular flowers with a more natural appearance than many of the showier, large flowered varieties. The dark, semi-evergreen foliage forms an attractive loose clump in borders. This hardy perennial is quietly elegant, bringing a relaxed, natural-looking display to herbaceous borders. Height: 50cm…  More Info

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Anemone hupehensis var. japonica 'Prinz Heinrich'

…Chinese anemones! Also known as Windflowers, Anemone hupehensis var. japonica 'Prinz Heinrich' is a beautiful, elegant perennial which forms a gradually spreading clump of foliage. The lobed green leaves are topped with glorious deep pink semi-double flowers which burst from beautiful buds, then…  More Info

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Buphthalmum salicifolium

…edges of borders, pairing beautifully with blue-flowered perennials such as lavenders, salvias and geraniums in dry, sunny positions. Forms a low, branching clump of narrow leaves from which rise bright, pure yellow daisies about 6cm across. Buphthalmum salicifolium flowers long and hard from early…  More Info

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Hemerocallis Collection

…addition to the garden. These low maintenance hardy perennials are easy to grow. Their strappy foliage adds texture to planting schemes and forms a generous clump as the years go by. Height and spread: 60cm (24). Hemerocallis collection comprises: * Hemerocallis ?Iced Lemon? - Refreshing citrus…  More Info

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Campanula takesimana

…closer look, as the inside of each flower is decorated deep maroon freckles. This hardy perennial has a rapid growth habit that will quickly form large clumps in borders. It prefers a lightly shaded spot making it useful for under-planting trees and shrubs, or filling the darker borders in the…  More Info

Just£19.99

Dianthus 'Rainbow Loveliness Improved Mixed'

…pinks have a strong, sweet fragrance that makes them a delightful cut flower for a vase indoors. Compact and hardy, they will quickly form attractive clumps at the front of borders, or try planting them in containers for a low maintenance display on the patio. Dianthus 'Rainbow Loveliness Improved…  More Info

Just£2.99

Hosta 'Minuteman'

…is complemented by pretty, lilac flowers in midsummer, which can grow up to 55cm (1'10) tall. Once established, this hardy perennial will form attractive clumps to provide fantastic ground cover throughout the season. Height: 55cm (1'10); Spread: 1m (3'3). Culinary information: The best part to use…  More Info

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Campanula takesimana

…surprise - lining each flower are deep maroon freckles. This Korean Bellflower is a hardy perennial, very fast growing; it will quickly form large clumps in borders. Preferring a lightly shaded spot, it ideal for planting near trees and shrubs, where it will cheer up the darker corners of your…  More Info

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Agapanthus Everpanthus Collection

…and their dwarf proportions makes them ideal for containers or sunny positions in the front of borders. Tough and drought-tolerant, they form compact clumps of bright green strappy foliage before bursting into multiple spikes of flowers. This selection blooms earlier than other agapanthus and repeat…  More Info

Just£29.99

Fritillaria 'Orange Beauty'

…This strong variety has exquisite colouring, bearing deep orange flowers glowing with red undertones. It is especially reliable, growing to form large clumps in suitable locations. If you want to add some extra pizzazz to your spring bulbs, Fritillaria ‘Orange Beauty’ is a choice pick.…  More Info

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Shasta Daisy 'Becky'

…is a vigorous and slightly later-flowering variety with large blooms and strong, upright stems that are ideal for cutting. It will soon form a generous clump that can be easily divided to create extra plants. They are sure to become a firm favourite! Height: 1.2m (47in). Spread 1m (40in). Plant…  More Info

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Shasta Daisy 'Becky'

…is a vigorous and slightly later-flowering variety with large blooms and strong, upright stems that are ideal for cutting. It will soon form a generous clump that can be easily divided to create extra plants. They are sure to become a firm favourite! Height: 1.2m (47in). Spread 1m (40in). Plant…  More Info

Just£28.99

Kniphofia uvaria

…and easy to grow. Kniphofia uvaria is a particularly tall species, making a grand statement at the back of borders! The strappy foliage forms a dense clump, with upright stems emerging in summer, topped with glowing blooms. The orange buds turn to gold as they open creating a spectacular two-tone…  More Info

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Verbascum 'Dark Eyes'

…with a contrasting maroon eye. Verbascum 'Dark Eyes' is a compact, dwarf variety, rising to just 30cm (12) tall. Its coarse green foliage forms a dense clump, creating excellent groundcover when they are planted in close groups. This hardy perennial is perfect for cottage gardens and Mediterranean…  More Info

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Phyllostachys aureosulcata 'Spectabilis'

…yellow-stemmed bamboo. Holding an RHS Award of Garden Merit, Phyllostachys aureosulcata 'Spectabilis' is a neat, upright bamboo that forms straight, narrow clumps, making it ideal for the back of the border or using as a tall privacy screen. Enjoy year-round interest from the golden yellow culms,…  More Info

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Solidago canadensis 'Cloth of Gold'

…perennial providing plumes of gold in late summer borders, growing in any well-drained soil and performing even in the driest summers. It forms compact clumps of woody stems clothed with lance-shaped green leaves. From late summer to autumn, it bears abundant upright panicles of tiny golden yellow…  More Info

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Coreopsis grandiflora 'Domino'

A hardy perennial which is valued for its exceptionally long and abundant flowering. Coreopsis grandiflora 'Domino' forms bushy clumps of finely divided leaves that bear daisy-like golden yellow flowers with blotches of red in the centre. Blooms are produced non-stop from early summer until the…  More Info

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Chionochloa flavicans 'Taupo Lights'

…variegated foliage that provides evergreen interest, plus spectacular summer/autumn flowers. Chionochloa flavicans ‘Taupo Lights’ forms low clumps of arching foliage, variegated with cream margins. In summer, tall, stiff stems support cascading, plume-like flowers, up to 30cm long, that…  More Info

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Equisetum japonicum (Marginal Aquatic)

…jungle, Equisetum japonicum is an impressive and versatile aquatic plant that can be grown in ponds, patio containers and even indoors. It forms dense clumps of strongly erect, leafless, bamboo-like stems barred with striking green and black bands. The hollow stems are evergreen, providing height,…  More Info

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Spathiphyllum 'Torelli' (House Plant)

Better known as the Peace Lily, these tender perennials are famed for their ability to remove pollutants from the air. Spathiphyllum 'Torelli' forms a dense clump of large, upright, glossy, evergreen leaves with gently drooping tips that make this a handsome house plant all year round. In spring and…  More Info

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Leucanthemum 'Victorian Secret'

…Like other Leucanthemums, ‘Victorian Secret’ is robust and reliable, tolerating a wide range of soils even poor ones. It forms a bushy clump that with regular dead-heading will flower for weeks from July to September. Great for cut flowers. Height and spread: 30-40cm (12-16in).…  More Info

Just£24.99

Cortaderia selloana 'Tiny Pampa'

…in even the smallest of gardens. Cortaderia selloana 'Tiny Pampa' is the most compact variety developed to date. This neat, dwarf Pampas forms a bushy clump of slender foliage and fluffy flower-plumes that catch the breeze in late summer, to create a swaying spectacle of texture and movement. This…  More Info

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Tree Lily 'Honeymoon'

…blooms in a delicate shade of primrose yellow. Lily 'Honeymoon' makes a wonderful cut flower with a powerful, sweet perfume. With maturity it produces multiple stems that form a dense bushy clump, so there will be plenty to spare for a vase indoors! Height: 2.5m (8?). Spread: 60cm (24).  More Info

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Baptisia 'Decadence Blueberry Sundae'

…palette of intense colours, a long flowering period and a compact habit that suits smaller gardens. Baptisia 'Decadence Blueberry Sundae' forms compact, bushy clumps of blue-green foliage topped with spires of lupin-like, indigo blue flowers, up to 25cm long. From May, the blooms begin to open from…  More Info

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Baptisia 'Decadence Dark Chocolate'

…palette of intense colours, a long flowering period and a compact habit that suits smaller gardens. Baptisia 'Decadence Dark Chocolate' forms compact, bushy clumps of blue-green foliage topped with spires of lupin-like, chocolate-purple flowers, up to 25cm long. From May, the blooms begin to open…  More Info

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Baptisia 'Decadence Pink Lemonade'

…palette of intense colours, a long flowering period and a compact habit that suits smaller gardens. Baptisia 'Decadence Pink Lemonade' forms compact, bushy clumps of blue-green foliage topped with bi-coloured spires of lupin-like flowers that open yellow but change to raspberry as they age, with…  More Info

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Baptisia 'Decadence Pink Truffles'

…palette of intense colours, a long flowering period and a compact habit that suits smaller gardens. Baptisia 'Decadence Pink Truffles' forms compact, bushy clumps of blue-green foliage topped with spires of soft pink, lupin-like flowers, up to 25cm long. From May, the blooms begin to open from the…  More Info

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Baptisia 'Decadence Vanilla Cream'

…palette of intense colours, a long flowering period and a compact habit that suits smaller gardens. Baptisia 'Decadence Vanilla Cream' forms compact, bushy clumps of blue-green foliage topped with spires of yellow buds that open to creamy-white, lupin-like flowers. From May, the blooms begin to open…  More Info

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Anemone x hybrida 'Andrea Atkinson'

…blooms are set against yellow anthers surrounding a green central button. The backs of the petals are sometimes tinged pink and green. Forms strong spreading clumps. Combine it with aconitum and asters for a fantastic late summer to autumn display. Height: 80cm (32in). Spread: 50cm (20in). Plant…  More Info

Just£24.99

Monarda 'Cambridge Scarlet'

…used to make pot pourri. Unfussy about soil type and thriving anywhere from full sun to dappled shade, this reliable perennial will quickly form a dense clump that associates beautifully with ornamental grasses and purple-leafed plants. Height: 90cm (35in). Spread: 45cm (18in). Culinary note: Use…  More Info

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