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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![Allium 'Ambassador'®]()
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.Available to order from June 2025 -
![Allium 'Cameleon'®]()
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.Available to order from June 2025 -
![Allium 'Firmament']()
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.Available to order from June 2025 -
![Allium 'Forelock'®]()
Allium 'Forelock'®
Maroon with a purple “crest”, striking flower. Height 100-140 cm.Available to order from June 2025 -
![Allium 'Gladiator']()
Allium 'Gladiator'
A tall, somewhat earlier-flowering Allium with lilac-purple, compact, spherical flowers. Excellent long-lasting cut flower.Available to order from June 2025 -
![Allium 'Globemaster'®]()
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.Available to order from June 2025 -
![Allium 'Hair'®]()
Allium 'Hair'®
Reddish-purple bulbils with unusual green blades, height 30-40 cm.Available to order from June 2025 -
![Allium 'Lucky Balloons']()
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.Available to order from June 2025 -
![Allium 'Mercurius']()
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.Available to order from June 2025 -
![Allium 'Miami']()
Allium 'Miami'
The hemispherical umbel with its flat base is composed of glossy, star-shaped crimson flowers. Excellent cut flower.Available to order from June 2025 -
![Allium 'Millenium']()
Allium 'Millenium'
Compact growing shape, solid gray-green leaves in which from July the numerous purple-red spherical inflorescences appear.Available to order from June 2025 -
![Allium 'Mount Everest']()
Allium 'Mount Everest'
White, height. 100 cm. The best large flowered white Allium.Available to order from June 2025 -
![Allium 'New York']()
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.Available to order from June 2025 -
![Allium 'Ostara']()
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.Available to order from June 2025 -
![Allium 'Party Balloons']()
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.Available to order from June 2025 -
![Allium 'Purple Rain']()
Allium 'Purple Rain'
Powerful purple-red color, beautiful transparent sphere with shiny star-shaped flowers. Multiplies quickly.Available to order from June 2025 -
![Allium 'Purple Sensation']()
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.Available to order from June 2025 -
![Allium 'Summer Beauty']()
Allium 'Summer Beauty'
A rich- and exuberant growing selection. During the entire summer it shows many globular flowers.Available to order from June 2025 -
![Allium 'Summer Drummer']()
Allium 'Summer Drummer'
Late summer flowering, purple red Allium. Height 175 cm.Available to order from June 2025 -
![Allium 'Toabago'®]()
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.Available to order from June 2025 -
![Allium 'Violet Beauty']()
Allium 'Violet Beauty'
A very nice, medium-high, 60-70 cm ornamental onion with star-shaped, violet flowers, multiplies quickly.Available to order from June 2025 -
![Allium 'White Giant']()
Allium 'White Giant'
An extra tall white allium on sturdy 150 cm tall stems.Available to order from June 2025 -
![Allium altissimum 'Album']()
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.Available to order from June 2025 -
![Allium altissimum 'Goliath']()
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.Available to order from June 2025 -
![Allium amethystinum 'Red...]()
Allium amethystinum 'Red Mohican'
Summer-flowering burgundy allium in which a crest develops during flowering from which white flowers emerge.Available to order from June 2025 -
![Allium amplectens 'Graceful...]()
Allium amplectens 'Graceful Beauty'
An easy-growing Allium from North America with ball-shaped white flower clusters. Height approx. 40 cm.Available to order from June 2025 -
![Allium atropurpureum]()
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.Available to order from June 2025 -
![Allium basalticum 'Silver...]()
Allium basalticum 'Silver Spring'
Half round, white flowers with a striking dark red ovary.Available to order from June 2025 -
![Allium caeruleum]()
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.Available to order from June 2025 -
![Allium carinatum ssp....]()
Allium carinatum ssp. pulch. 'Album'
Pending white flowers, flowering-time: July-August. Height 40-50 cm. Pefect for naturlizing.Available to order from June 2025 -
![Allium carinatum subsp....]()
Allium carinatum subsp. pulchellum
Pending purple-pink flowers, flowering-time: July-August. Height 40-50 cm. Perfect for naturlizing.Available to order from June 2025 -
![Allium carolinianum 'Rosy...]()
Allium carolinianum 'Rosy Dream'
Strong flower stalk with a spherical inflorescence of about 3 cm, which is densely covered with dark pink, scented flowers.Available to order from June 2025 -
![Allium cernuum]()
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.Available to order from June 2025 -
![Allium chloranthum 'Yellow...]()
Allium chloranthum 'Yellow Fantasy'
Elegant umbel with numerous green-yellow flowers. Looks like A. flavum but flowering time is over a month earlier.Available to order from June 2025 -
![Allium christophii]()
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.Available to order from June 2025 -
![Allium cowanii]()
Allium cowanii
Snow-white flowers, formed in a flower head, appear in April-May. Naturalises well. Height 40 cm.Available to order from June 2025 -
![Allium flavum]()
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.Available to order from June 2025 -
![Allium giganteum]()
Allium giganteum
Light purple, large-flowered, one of the largest and most striking ornamental onions, height approx. 150 cm.Available to order from June 2025 -
![Allium karataviense]()
Allium karataviense
A low growing Allium with light purple-pink to white flowers, large purplish-gray leaves. Height 15-20 cm.Available to order from June 2025 -
![Allium karataviense 'Ivory...]()
Allium karataviense 'Ivory Queen'
Dutch selection, large globes with ivory white flowers. Decorative blue-gray, broad leaves.Available to order from June 2025 -
![Allium karataviense x 'Red...]()
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.Available to order from June 2025 -
![Allium moly]()
Allium moly
Zierlauch mit goldgelben Blütenschirmen. Hervorragend zum Verwilderung geeignet, auch im Schatten.Available to order from June 2025 -
![Allium nigrum]()
Allium nigrum
Synonym A. multibulbosum. Ornamental onion with semi-circular white flower heads, height 70-80 cm. Excellent cut flower.Available to order from June 2025 -
![Allium nigrum 'Pink Jewel']()
Allium nigrum 'Pink Jewel'
A tall, pale pink Allium with half-rounded flower heads and dark flower stems. Slightly variable.Available to order from June 2025 -
![Allium obliquum]()
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.Available to order from June 2025 -
![Allium oreophilum 'Samur']()
Allium oreophilum 'Samur'
A small ornamental onion with purple-pink flowers, suitable for naturalising. Found in the mountains in Afghanistan.Available to order from June 2025 -
![Allium roseum]()
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.Available to order from June 2025 -
![Allium schubertii]()
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.Available to order from June 2025
