Perennials - D, buy online

Perennials - D

Position: full sunSoil: fertile, humus-rich soil. Rate of growth: average Flowering period: July to October. Hardiness: half hardy. A stunning cactus dahlia with red-black flowers and a black heart. The fully double flowers have long, narrow, pointed petals that recurve for more half their length and have a ruffled appearance. The flowers are produced from July until the first frosts. Try it in bold groups in a sunny, sheltered border. Garden care: Stake with canes or brushwood as it becomes necessary. Deadhead and feed regularly to prolong flowering. Provide a high-nitrogen liquid feed each week in June, then a high-potash fertiliser each week from July to September. Once the first frosts have blackened the foliage, carefully lift and clean the tubers and allow them to dry naturally indoors. Place the dry tubers in a shallow tray, just covered with slightly moist potting compost, sand or vermiculite. Store in a frost-free place, checking frequently over the wintermonths. In warmer areas, tubers may be left to overwinter in the ground, although. they may suffer from slug damage, particularly inheavy clay soils.

Dahlia £6.95

Position: full sunSoil: fertile, humus-rich soil. Rate of growth: average Flowering period: June to September. Hardiness: half hardy. Showy, flamboyant and available in a range of brilliant colours and strong shapes, dahlias are becoming popular again, as a way of adding bold splashes of colour to the garden in summer. 'Arabian Knight has masses of fully double, dark wine-red flowers with slightly incurved petals from June until the first frosts. Under certain light the petals of this small dahlia appear almost black. An ideal companion for plum-coloured flowers and foliage plants, it needs a sheltered, sunny site with fertile, humus-rich soil. Garden care: Stake with canes or brushwood as it becomes necessary. Deadhead and feed regularly to prolong flowering. Provide a high-nitrogen liquid feed each week in June, then a high-potash fertiliser each week from July to September. Once the first frosts have blackened the foliage, carefully lift and clean the tubers and allow them to dry naturally indoors. Place the dry tubers in a shallow tray, just covered with slightly moist potting compost, sand or vermiculite. Store in a frost-free place, checking frequently over the winter months. In warmer areas, tubers may be left to overwinter in the ground, although. they may suffer from slug damage, particularly in heavy clay soils.

Dahlia £5.95

Position: full sunSoil: fertile, humus-rich soil. Rate of growth: average Flowering period: July to September. Hardiness: half hardy. An unusual single dahlia, more delicate in appearance than most, this has dark chocolate-red petals surrounding distinctive, sulphur-yellow stamens. The stems are dark and wiry, and the foliage a lovely green-bronze. A superb variety that looks at home in many different situations, especially in a 'hot' border. It needs a sunny site with fertile, humus-rich soil and makes an excellent cut flower. Garden care: Stake with canes or brushwood as it becomes necessary. Deadhead and feed regularly to prolong flowering. Provide a high-nitrogen liquid feed each week in June, then a high-potash fertiliser each week from July to September. Once the first frosts have blackened the foliage, carefully lift and clean the tubers and allow them to dry naturally indoors. Place the dry tubers in a shallow tray, just covered with slightly moist potting compost, sand or vermiculite. Store in a frost-free place, checking frequently over the winter months. In warmer areas, tubers may be left to overwinter in the ground, although. they may suffer from slug damage, particularly in heavy clay soils.

Dahlia £5.95

Position: full sunSoil: fertile, humus-rich soil. Rate of growth: average Flowering period: July to October. Hardiness: half hardy. Now fashionable again,dahlias are useful for extending the season of interest in a perennial border, when every. Thing else is past its best. Ragged Robin has dramatic, pointed, ruby red petals that are arranged in several layers around the yellow centre. It looks great planted in bold groups, with purple-flowering plants, such as Aster novi-belgii Purple Dome, or as part of an exotic planting scheme. The flowers are produced from July until the first frosts. Garden care: Provide a high-potash fertiliser every couple of weeks from July to September. It is not usually necessary to lift the tubers and store them over winter except in cold areas or in a severe winter. If you do decide to bring them indoors, carefully lift and clean the tubers and allow them to dry naturally. Place the dry tubers in a shallow tray, just covered with slightly moist potting compost, sand or vermiculite. Store in a frost-free place, checking frequently over the winter months.

Daylily £5.45

Position: full sunSoil: fertile, moist, well-drained soil. Rate of growth: average. Flowering period: June to July. Hardiness: fully hardy. This is a large, deep blood-red daylily that flowers from June to July. It looks fabulous planted in drifts in a sunny mixed or herbaceous border among 'hot' colours or with cannas and montbretias as companions. The bright-green, strap-like leaves are semi-evergreen in mild areas, and soon form large clumps of strap-like foliage that helps to suppress weeds. Like most hemerocallis, it is robust and easy to grow, provided you follow the tips below. Garden care: The Greek term 'hemerocallis' means 'beautiful for a day', and daylilies need regular deadheading to prolong flowering and prevent their unsightly deadheads from dominating the scene. Each stem carries several flowers, so snap off each flower as it fades. When the stem has finished flowering, cut it down to the ground. After the plant has finished flowering altogether, pull out the dead leaves. When the foliage is looking tatty, cut it down to the ground and fresh new growth will appear. Lift and divide every two years in spring to keep the rhizomes vigorous and apply a generous 5-7cm (2-3in) mulch of well-rotted garden compost or manure around the base of the plant. Water frequently from spring until the buds appear.

Daylily £5.45

Position: full sunSoil: fertile, moist, well-drained soil. Rate of growth: average. Flowering period: July. Hardiness: fully hardy. A free-flowering daylily with masses of apricot-pink flowers and yellow and green throats appearing in midsummer. It looks fabulous planted in drifts in a sunny mixed or herbaceous border. The bright green, strap-like leaves are semi-evergreen, and soon form large clumps of strap-like foliage that helps to suppress weeds and disguise the dying foliage of spring-flowering bulbs. A compact and free-flowering variety, it's ideal for the smaller garden or a large container planting. Like most hemerocallis, it is robust and easy to grow, provided you follow the tips below. Garden care: The Greek term 'hemerocallis' means 'beautiful for a day', and daylilies need regular deadheading to prolong flowering and prevent their unsightly deadheads from dominating the scene. Each stem carries several flowers, so snap off each flower as it fades. When the stem has finished flowering, cut it down to the ground. After the plant has finished flowering altogether, pull out the dead leaves. When the foliage is looking tatty, cut it down to the ground and fresh new growth will appear. Lift and divide every two years in spring to keep the rhizomes vigorous and apply a generous 5-7cm (2-3in) mulch of well-rotted garden compost or manure around the base of the plant. Water frequently from spring until the buds appear.

Daylily £5.45

Position: full sunSoil: fertile, moist, well-drained soil. Rate of growth: average. Flowering period: July and August. Hardiness: fully hardy. Masses of splendid, salmon pink, lily-like flowers with a pale midrib, last just one day but appear continuously in July and August. This semi-evergreen daylily soon forms large clumps of strap-like leaves, valuable for suppressing weeds at the front of the border. A popular old variety, it looks great planted in drifts in a sunny mixed or herbaceous border and contrast suprisingly well with the spiky blue flowerheads of globe thistle and sea holly. Like most hemerocallis, it is robust and easy to grow, provided you follow the tips below. Garden care: The Greek term 'hemerocallis' means 'beautiful for a day', and daylilies need regular deadheading to prolong flowering and prevent their unsightly deadheads from dominating the scene. Each stem carries several flowers, so snap off each flower as it fades. When the stem has finished flowering, cut it down to the ground. After the plant has finished flowering altogether, pull out the dead leaves. When the foliage is looking tatty, cut it down to the ground and fresh new growth will appear. Lift and divide every two years in spring to keep the rhizomes vigorous and apply a generous 5-7cm (2-3in) mulch of well-rotted garden compost or manure around the base of the plant. Water frequently from spring until the buds appear.

Daylily £5.45

Position: full sunSoil: fertile, moist, well-drained soil. Rate of growth: average. Flowering period: July. Hardiness: fully hardy. An unusual daylily, with masses of rust-red and orange bi-coloured flowers appearing continuously in midsummer. Each flower has three dusty-orange outer petals and three bronze inner petals with a prominent yellow midrib. This plant looks fabulous planted in drifts in a sunny mixed or herbaceous border among 'hot' colours, or with cannas and montbretias as companions. The bright green, strap-like leaves are evergreen in mild areas, and soon form large clumps of strap-like foliage that helps to suppress weeds. Like most hemerocallis, it is robust and easy to grow, provided you follow the tips below. Garden care: The Greek term 'hemerocallis' means 'beautiful for a day', and daylilies need regular deadheading to prolong flowering and prevent their unsightly deadheads from dominating the scene. Each stem carries several flowers, so snap off each flower as it fades. When the stem has finished flowering, cut it down to the ground. After the plant has finished flowering altogether, pull out the dead leaves. When the foliage is looking tatty, cut it down to the ground and fresh new growth will appear. Lift and divide every two years in spring to keep the rhizomes vigorous and apply a generous 5-7cm (2-3in) mulch of well-rotted garden compost or manure around the base of the plant. Water frequently from spring until the buds appear.

Daylily £5.45

Position: full sunSoil: fertile, moist, well-drained soil. Rate of growth: average. Flowering period: July. Hardiness: fully hardy. Masses of fragrant, greenish yellow, lily-like flowers, appear continuously in mid summer. It looks fabulous planted in drifts in a sunny mixed or herbaceous border among 'hot' colours, or with cannas and montbretias as companions. The bright green, strap-like leaves are semi-evergreen in mild areas, and soon form large clumps of strap-like foliage that helps to suppress weeds. Like most hemerocallis, it is robust and easy to grow, provided you follow the tips below. To fully appreciate the sweetly scented flowers, which open late afternoon and last just one day, plant it close to an entrance or path. Garden care: The Greek term 'hemerocallis' means 'beautiful for a day', and daylilies need regular deadheading to prolong flowering and prevent their unsightly deadheads from dominating the scene. Each stem carries several flowers, so snap off each flower as it fades. When the stem has finished flowering, cut it down to the ground. After the plant has finished flowering altogether, pull out the dead leaves. When the foliage is looking tatty, cut it down to the ground and fresh new growth will appear. Lift and divide every two years in spring to keep the rhizomes vigorous and apply a generous 5-7cm (2-3in) mulch of well-rotted garden compost or manure around the base of the plant. Water frequently from spring until the buds appear.

Daylily £4.95

Position: full sunSoil: fertile, moist, well-drained soil. Rate of growth: average. Flowering period: July. Hardiness: fully hardy. Masses of scarlet, lily-like flowers with yellow midribs and throats appear continuously in mid summer. This daylily looks stunning planted in drifts in a sunny mixed or herbaceous border among 'hot' colours, or with cannas and montbretias as companions. The bright green, strap-like leaves are semi-evergreen in mild areas, and soon form large clumps of strap-like foliage that helps to suppress weeds and disguise the dying foliage of spring-flowering bulbs. Like most hemerocallis, it is robust and easy to grow, provided you follow the tips below. It's best to provide some protection in really sunny sites as the scarlet blooms are susceptible to sun-scorch. Garden care: The Greek term 'hemerocallis' means 'beautiful for a day', and daylilies need regular deadheading to prolong flowering and prevent their unsightly deadheads from dominating the scene. Each stem carries several flowers, so snap off each flower as it fades. When the stem has finished flowering, cut it down to the ground. After the plant has finished flowering altogether, pull out the dead leaves. When the foliage is looking tatty, cut it down to the ground and fresh new growth will appear. Lift and divide every two years in spring to keep the rhizomes vigorous and apply a generous 5-7cm (2-3in) mulch of well-rotted garden compost or manure around the base of the plant. Water frequently from spring until the buds appear.

Daylily £4.95

Position: full sunSoil: fertile, moist, well-drained soil. Rate of growth: average. Flowering period: June to August. Hardiness: fully hardy. Masses of deep yellow, lily-like flowers lasting just one day, appear continuously from June to August on slender, branched stems. This award-winning, small-flowered daylily looks fabulous planted in drifts in a sunny mixed or herbaceous border among 'hot' colours, or with cannas and montbretias as companions. The bright green, strap-like leaves are semi-evergreen in mild areas, and soon form large clumps of strap-like foliage that helps to suppress weeds and disguise the dying foliage of spring-flowering bulbs. A popular and long-flowering variety it copes well with a range of conditions including partial shade. Like most hemerocallis, it is robust and easy to grow, provided you follow the tips below. Garden care: The Greek term 'hemerocallis' means 'beautiful for a day', and daylilies need regular deadheading to prolong flowering and prevent their unsightly deadheads from dominating the scene. Each stem carries several flowers, so snap off each flower as it fades. When the stem has finished flowering, cut it down to the ground. After the plant has finished flowering altogether, pull out the dead leaves. When the foliage is looking tatty, cut it down to the ground and fresh new growth will appear. Lift and divide every two years in spring to keep the rhizomes vigorous and apply a generous 5-7cm (2-3in) mulch of well-rotted garden compost or manure around the base of the plant. Water frequently from spring until the buds appear.

Daylily £5.95

Position: full sunSoil: fertile, moist, well-drained soil. Rate of growth: fast. Flowering period: June. Hardiness: fully hardy. Masses of beautiful, golden yellow, lily-like flowers lasting one day, appear continuously in early summer on slender stems. This cheerful, yellow daylily looks great planted at the front of a sunny mixed or herbaceous border among other 'hot' colours. A compact and free flowering variety, it's ideal for the smaller garden or a large container planting. Like most hemerocallis, it is robust and easy to grow, provided you follow the tips below. Garden care: The Greek term 'hemerocallis' means 'beautiful for a day', and daylilies need regular deadheading to prolong flowering and prevent their unsightly deadheads from dominating the scene. Each stem carries several flowers, so snap off each flower as it fades. When the stem has finished flowering, cut it down to the ground. After the plant has finished flowering altogether, pull out the dead leaves. When the foliage is looking tatty, cut it down to the ground and fresh new growth will appear. Lift and divide every two years in spring to keep the rhizomes vigorous and apply a generous 5-7cm (2-3in) mulch of well-rotted garden compost or manure around the base of the plant. Water frequently from spring until the buds appear.

Daylily £5.45

Position: full sunSoil: fertile, moist, well-drained soil. Rate of growth: fast-growing. Flowering period: July and August. Hardiness: fully hardy. Masses of large, star-shaped lavender-pink flowers 12cm across appear continuously in mid and late summer on slender, erect stems. This vigorous semi-evergreen daylily soon forms large clumps of strap-like leaves, valuable for suppressing weeds at the front of the border. A particularly free-flowering variety, it looks great planted in drifts in a sunny mixed or herbaceous border or beside a pond or water feature. Like most hemerocallis, it is robust and easy to grow, provided you follow the tips below. Garden care: The Greek term 'hemerocallis' means 'beautiful for a day', and daylilies need regular deadheading to prolong flowering and prevent their unsightly deadheads from dominating the scene. Each stem carries several flowers, so snap off each flower as it fades. When the stem has finished flowering, cut it down to the ground. After the plant has finished flowering altogether, pull out the dead leaves. When the foliage is looking tatty, cut it down to the ground and fresh new growth will appear. Lift and divide every two years in spring to keep the rhizomes vigorous and apply a generous 5-7cm (2-3in) mulch of well-rotted garden compost or manure around the base of the plant. Water frequently from spring until the buds appear.

Daylily £5.45

Position: full sunSoil: fertile, moist, well-drained soil. Rate of growth: average. Flowering period: June. Hardiness: fully hardy. This early-flowering daylily produces masses of fragrant, long-lasting, bright custard-yellow, lily-like flowers which open in the late afternoon, and last for just one day. It looks wonderful planted in drifts in a sunny mixed or herbaceous border, or to appreciate its fragrance, plant it close to an entrance or path. The bright green, strap-like leaves are semi-evergreen in mild areas, and soon form large clumps of strap-like foliage that helps to suppress weeds and disguise the dying foliage of spring-flowering bulbs. Like most hemerocallis, it is robust and easy to grow, provided you follow the tips below. Garden care: The Greek term 'hemerocallis' means 'beautiful for a day', and daylilies need regular deadheading to prolong flowering and prevent their unsightly deadheads from dominating the scene. Each stem carries several flowers, so snap off each flower as it fades. When the stem has finished flowering, cut it down to the ground. After the plant has finished flowering altogether, pull out the dead leaves. When the foliage is looking tatty, cut it down to the ground and fresh new growth will appear. Lift and divide every two years in spring to keep the rhizomes vigorous and apply a generous 5-7cm (2-3in) mulch of well-rotted garden compost or manure around the base of the plant. Water frequently from spring until the buds appear.

Dead Nettle £4.95

Position: full sun or partial shade. Soil: moist, well-drained garden soil. Rate of growth: average to fast. Flowering period: May to July. Hardiness: fully hardy. Delicate silver leaves, narrowly edged in green give this lamium an ethereal quality. It quickly forms a silvery carpet of foliage with whorls of long-lasting, nettle-like, magenta flowers in late spring and early summer. A beautiful evergreen groundcover plant that will light up the base of deciduous or even evergreen shrubs and trees. It prefers partial shade, and once established, will even flourish in difficult areas of dry shade. Garden care: If you are growing this in dry shade, keep it well watered until it is established. After it has finished flowering, remove the faded flower heads to encourage fresh new foliage. Lift and divide large clumps in late autumn or early spring.

Dead Nettle £5.45

Position: full sun or partial shade. Soil: moist, well-drained garden soil. Rate of growth: fast. Flowering period: May to July. Flower colour: pure white. Other features: green edged silver leaves. Hardiness: fully hardy. Silver leaves edged in green and spikes of pure white flowers in late spring and early summer. Ornamental dead nettles make excellent groundcover in between shrubs. Since this form has a tendency to be a bit of a thug it should be planted away from other small plants. The foliage is best in partial shade. Garden care: Position away from other small plants. To check the plant's spread dig up invasive roots in late autumn or early spring.

Delphinium £7.95

Position: full sunSoil: fertile, well-drained soil. Rate of growth: average Flowering period: June and July. Hardiness: fully hardy. A fantastic, vigorous delphinium whose towering spikes of purple flowers have iridiscent flecks of electric blue that catch the light, and white eyes. Plant in bold clumps to add a touch of magic to a cottage-garden scheme or towards the back of a well-drained, sunny border, where they will add height and bold splashes of colour. They make excellent cut flowers. Further flowering in the autumn may be encouraged by cutting back after flowering. Garden care: Protect young foliage against slug and snail damage in spring. Stake with bamboo canes in mid-spring, before the flowers appear. During the growing season, apply a balanced liquid fertiliser every 2-3 weeks and wearing gloves cut back the faded flower-stems to a flowering side-shoot to encourage repeat flowering. At the end of autumn cut back and compost the faded flower stems.

Delphinium £5.95

Towering spires of large, semi-double, pure white flowers in June and July and deeply lobed, mid-green leaves. These wonderful white delphiniums are perfect for brightening the back of a sunny, well- drained herbaceous or mixed border. Sadly they're shorter lived than many other varieties, surviving for only a few years. Position: full sunSoil: fertile, well-drained soil. Rate of growth: average. Flowering period: June and July. Flower colour: pure white. Other features: all parts of the plant may cause severe discomfort if ingested; contact with the sap may cause skin irritation. Hardiness: fully hardy. Garden care: Stake with bamboo canes in mid-spring. During the growing season apply a balanced liquid fertiliser every 2-3 weeks and wearing gloves cut back the faded flower-stems to a flowering side-shoot. At the end of autumn cut back and compost the faded flower stems. Goes well with: Achillea filipendulina 'Cloth of Gold', Veronicastrum virginicum f. album, Echinops ritro, Foeniculum vulgare 'Purpureum', Aster frikartii 'Monch', Linum perenne 'Blau Saphir'

Delphinium £7.95

Position: full sunSoil: fertile, well-drained soil. Rate of growth: average Flowering period: June and July. Hardiness: fully hardy Towering spires of double purple flowers with white eyes appear in June and July on tall stems with deeply cut, mid-green leaves. These show-stopper delphiniums look great planted in bold clumps as part of a cottage-garden scheme or towards the back of a well-drained, sunny border where they will add height and bold splashes of colour. They make excellent cut flowers. Garden care: Protect young foliage against slug and snail damage in spring. Stake with bamboo canes in mid-spring, before the flowers appear. During the growing season, apply a balanced liquid fertiliser every 2-3 weeks and wearing gloves cut back the faded flower-stems to a flowering side-shoot to encourage repeat flowering. At the end of autumn cut back and compost the faded flower-stems.

Delphinium £7.95

Position: full sunSoil: fertile, well-drained soil. Rate of growth: average Flowering period: June and July. Hardiness: fully hardy. Grower Simon Langdon says that this is one of the slightly shorter plants in his range of beautiful elatum delphiniums. The flowers are very large and closely placed together in a pretty deep lavender blue. The centre of the flower displays a further group of petals with no obvious eye showing. Like all delphiniums, these look fantastic planted in bold clumps as part of a cottage-garden scheme or towards the back of a well-drained, sunny border, where theywill add height and bold splashes of colour. They make excellent cut flowers. Further flowering in the autumn may be encouraged by cutting back after flowering. Garden care: Protect young foliage against slug and snail damage in spring. Stake with bamboo canes in mid-spring, before the flowers appear. During the growing season, apply a balanced liquid fertiliser every 2-3 weeks and wearing gloves cut back the faded flower-stems to a flowering side-shoot to encourage repeat flowering. At the end of autumn cut back and compost the faded flower-stems.

Delphinium £7.95

Position: full sunSoil: fertile, well-drained soil. Rate of growth: average Flowering period: June and July Flower colour: very pale lilac. Hardiness: fully hardy. This towering delphinium has semi-double, white flowers with a pale lavender flush, a white eye and dark violet veins on the back of the petals. The flowers appear in June and July and form impressive upright spires which look fantastic planted in bold clumps as part of a cottage-garden scheme or towards the back of a well-drained, sunny border, where they will add height and lightness. The flowers last for around six weeks, but you can often get a second flush of flowers later in the summer if you cut the flowered stems back as soon as they have finished. Garden care: For best results choose an open spot away from taller plants and stake with bamboo canes as they start to shoot upwards in mid-spring. Protect young foliage against slug and snail damage in spring. During the growing season, apply a balanced liquid fertiliser every 2-3 weeks and wearing gloves cut back the faded flower-stems to a flowering side-shoot to encourage repeat flowering. At the end of autumn cut back and compost the faded flower stems.

Delphinium £7.95

Position: full sunSoil: fertile, well-drained soil. Rate of growth: average Flowering period: June and July Flower colour: pale sky-blue with a white eye. Other features: all parts of the plant may cause severe discomfort if ingested; contact with the sap may cause skin irritation; excellent cut-flowers; deeply lobed, mid-green leaves. Hardiness: fully hardy Pretty pale blue flowers rise in spires above the foliage in early summer. This variety is relatively low growing but is still great for adding vertical vertical interest in the middle of a herbaceous border. To encourage a second flush of flowers in late summer you should cut the flowered stems back as soon as they have finished. Garden care: For best results choose an open spot away from taller plants. If necessary stake with bamboo canes as they start to shoot upwards in mid-spring. During the growing season apply a balanced liquid fertiliser every 2-3 weeks and wearing gloves cut back the faded flower-stems to a flowering side-shoot. Protect the young foliage against slug-damage in spring and at the end of autumn cut back and compost the faded flower-stems.

Delphinium £7.95

Position: full sunSoil: fertile, well-drained soil. Rate of growth: average Flowering period: June and July. Hardiness: fully hardy. This unusual delphinium produces spires of large, flat, magenta-pink discs with brown eyes in June and July. This variety has been given the Award of Garden Merit by the RHS because of its tip top performance, so it is a good one to include in a mixed or herbaceous border if you want to create vertical interest. For best effect plant in odd-numbered clumps or drifts. To encourage a second flush of flowers in late summer you should cut the flowered stems back as soon as they have finished. Garden care: For best results, choose an open spot away from taller plants. Stake with bamboo canes as they start to shoot upwards in mid-spring and protect young foliage against slug and snail damage. During the growing season, apply a balanced liquid fertiliser every 2-3 weeks and wearing gloves cut back the faded flower-stems to a flowering side-shoot to encourage repeat flowering. At the end of autumn cut back and compost the faded flower stems.

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