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Summer-flowering bulbs will be available to order from the 31 of January.

Allium

Large-flowered alliums are great to combine among perennials in the border. The leaves of the Allium start dying off before flowering time. This is the moment when the flower bulb starts to ripen and has almost finished growing. If the Allium is planted among perennials, you can camouflage the dying leaves among the other plants and it will be less noticeable.
Large-flowered Alliums can stay in the ground for several years. As long as the flowering remains beautiful, leave them in place. If the flowering diminishes, that's the time to dig up the bulbs after flowering. In summer, keep the bulbs warm and dry. If the bulbs are still in good condition, they can be replanted elsewhere in the garden in autumn.
Plant Allium in a sunny spot in well-drained soil.

The small-flowered Alliums are ideally suited for naturalising in a sunny spot in permeable soil. With the exception of Allium triquetrum and Allium ursinum, which also thrive in a (semi-)shaded spot.

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Showing 1-48 of 56 item(s)

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Allium 'Ambassador'®

A large-flowered violet-blue Allium with very sturdy stems, height about 120 cm. The foliage remains attractive for a long time during the flowering period, June.
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Allium 'Cameleon'®

The soft pink flowers go through several colour stages during flowering. The downy leaves are hairy at the sides. A nice ornamental onion that naturalises well.
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Allium 'Firmament'

Beautiful dark purple allium with a metallic sheen. The semi-spherical flower head has a diameter of 10-12 cm. The sturdy flower stem is 70-80 cm high.
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Allium 'Forelock'®

Maroon with a purple “crest”, striking flower. Height 100-140 cm.
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Allium 'Gladiator'

A tall, somewhat earlier-flowering Allium with lilac-purple, compact, spherical flowers. Excellent long-lasting cut flower.
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Allium 'Globemaster'®

A large Allium (100 cm.) with very big lilac flowers. One of the best of the large flowering alliums. Flowering time: more than 5 weeks.
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Allium 'Hair'®

Reddish-purple bulbils with unusual green blades, height 30-40 cm.
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Allium 'Lucky Balloons'

Originated from A. karataviense x A. hollandicum. Several flower stems appear from a bulb, an average of three per bulb, on which the spherical inflorescences with light purple-pink flowers emerge.
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Allium 'Mercurius'

Firm Allium with a semi-spherical, shiny purple flower head. The leaves remain green for a long time due to an existing wax layer. Excellent cut flower.
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Allium 'Miami'

The hemispherical umbel with its flat base is composed of glossy, star-shaped crimson flowers. Excellent cut flower.
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Allium 'Millenium'

Compact growing shape, solid gray-green leaves in which from July the numerous purple-red spherical inflorescences appear.
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Allium 'Mount Everest'

White, height. 100 cm. The best large flowered white Allium.
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Allium 'New York'

A medium-high Allium with soft violet, semi-spherical flower heads. The slender, grey-green leaves remain attractive during flowering. Beautiful for midway in the flower bed.
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Allium 'Ostara'

A somewhat taller Allium, created from a cross between karataviense and A. atropurpureum. A beautiful cultivar in which the decorative foliage is recognisable from A. karataviense and the flower colour comes from A. atroprupureum.
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Allium 'Party Balloons'

A recently introduced cultivar with the special feature that several flower stems appear per bulb. Good to use between low plants and in pots.
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Allium 'Purple Rain'

Powerful purple-red color, beautiful transparent sphere with shiny star-shaped flowers. Multiplies quickly.
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Allium 'Purple Sensation'

(Allium aflatunense 'Purple Sensation'). Well-known, grateful ornamental onion with round, purple flowers. For an Allium, it flowers quite early, as early as the end of April. Great for naturalising, also in places with less sun. Height 80 cm.
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Allium 'Summer Beauty'

A rich- and exuberant growing selection. During the entire summer it shows many globular flowers.
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Allium 'Summer Drummer'

Late summer flowering, purple red Allium. Height 175 cm.
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Allium 'Toabago'®

Previously offered as Allium 'Spider'. A cross between A. schubertii and A. atropurpureum. The result is a schubertii like flower but a bit smaller and darker. The height of 60 cm. makes it a good cut flower.
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Allium 'Violet Beauty'

A very nice, medium-high, 60-70 cm ornamental onion with star-shaped, violet flowers, multiplies quickly.
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Allium 'White Giant'

An extra tall white allium on sturdy 150 cm tall stems.
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Allium altissimum 'Album'

The white spherical flowers on tall stems are followed by decorative seed pods that remain attractive for a long time after flowering.
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Allium altissimum 'Goliath'

Previously offered as A. 'Samson'. A special selection of A. altissimum with all the same height and flower size. Height 200 cm. Flower size 10-12 cm.
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Allium amethystinum 'Red Mohican'

Summer-flowering burgundy allium in which a crest develops during flowering from which white flowers emerge.
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Allium amplectens 'Graceful Beauty'

An easy-growing Allium from North America with ball-shaped white flower clusters. Height approx. 40 cm.
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Allium atropurpureum

A late-flowering, dark purple-red allium, height 60-80 cm. The semi-spherical flower head consists of densely arranged, star-shaped flowers.
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Allium basalticum 'Silver Spring'

Half round, white flowers with a striking dark red ovary.
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Allium caeruleum

Sky-blue star-shaped flowers forming a compact, spherical inflorescence about 4 cm in diameter. Late flowering, from June onwards. Suitable for naturalising.
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Allium carinatum ssp. pulch. 'Album'

Pending white flowers, flowering-time: July-August. Height 40-50 cm. Pefect for naturlizing.
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Allium carinatum subsp. pulchellum

Pending purple-pink flowers, flowering-time: July-August. Height 40-50 cm. Perfect for naturlizing.
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Allium carolinianum 'Rosy Dream'

Strong flower stalk with a spherical inflorescence of about 3 cm, which is densely covered with dark pink, scented flowers.
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Allium cernuum

An American species in which the flower head consists of violet-pink, pendulous, globular flowers. Both leaves and flowers are edible, height 40 cm. Clud-forming growth habit.
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Allium chloranthum 'Yellow Fantasy'

Elegant umbel with numerous green-yellow flowers. Looks like A. flavum but flowering time is over a month earlier.
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Allium christophii

The large flower consists of up to a hundred shiny violet flowers. Propagates by seed, in sunny, dry places A. christophii will naturalise. Very suitable as a dried flower.
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Allium cowanii

Snow-white flowers, formed in a flower head, appear in April-May. Naturalises well. Height 40 cm.
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Allium flavum

The golden yellow, pendulous flowers form a nodding flower head. The slender foliage is grey-green. Naturalises well in a sunny, dry location. Height 35 cm.
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Allium giganteum

Light purple, large-flowered, one of the largest and most striking ornamental onions, height approx. 150 cm.
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Allium karataviense

A low growing Allium with light purple-pink to white flowers, large purplish-gray leaves. Height 15-20 cm.
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Allium karataviense 'Ivory Queen'

Dutch selection, large globes with ivory white flowers. Decorative blue-gray, broad leaves.
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Allium karataviense x 'Red Giant Star'

Selection with pink-red flowers, large gray-green foliage. The flowers are slightly variable in colour. Height 15-20 cm.
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Allium moly

Zierlauch mit goldgelben Blütenschirmen. Hervorragend zum Verwilderung geeignet, auch im Schatten.
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Allium nigrum

Synonym A. multibulbosum. Ornamental onion with semi-circular white flower heads, height 70-80 cm. Excellent cut flower.
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Allium nigrum 'Pink Jewel'

A tall, pale pink Allium with half-rounded flower heads and dark flower stems. Slightly variable.
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Allium obliquum

Lovely round, rather small greenish-yellow flowers, a unique colour for a tall Allium. There are leaves on the flower stalks. Flowering time June-July, height 60 to 90 cm.
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Allium oreophilum 'Samur'

A small ornamental onion with purple-pink flowers, suitable for naturalising. Found in the mountains in Afghanistan.
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Allium roseum

Ornamental onion whose semi-spherical inflorescence consists of dozens of bell-shaped satin-pink flowers. Sometimes small dark red bulbils are visible in the flower head. Good keeping cut flower and perfect for naturalising.
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Allium schubertii

An Allium with an impressive, irregularly shaped flower head, consisting of many pale pink flowers. The stem length of the flowers can reach 20 cm. Height only 40 cm. Perfect cut flower and dried flower.