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Allium, large-flowered

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.

  • 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.
    Delivery planting time, September-November 2024
  • 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.
    Delivery planting time, September-November 2024
  • Allium 'Forelock'®

    Maroon with a purple “crest”, striking flower. Height 100-140 cm.
    Delivery planting time, September-November 2024
  • Allium 'Gladiator'

    A tall, somewhat earlier-flowering Allium with lilac-purple, compact, spherical flowers. Excellent long-lasting cut flower.
    Delivery planting time, September-November 2024
  • 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.
    Delivery planting time, September-November 2024
  • 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.
    Delivery planting time, September-November 2024
  • 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.
    Delivery planting time, September-November 2024
  • Allium 'Miami'

    The hemispherical umbel with its flat base is composed of glossy, star-shaped crimson flowers. Excellent cut flower.
    Delivery planting time, September-November 2024
  • Allium 'Mount Everest'

    White, height. 100 cm. The best large flowered white Allium.
    Delivery planting time, September-November 2024
  • 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.
    Delivery planting time, September-November 2024
  • 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.
    Delivery planting time, September-November 2024
  • 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.
    Delivery planting time, September-November 2024
  • Allium 'Purple Rain'

    Powerful purple-red color, beautiful transparent sphere with shiny star-shaped flowers. Multiplies quickly.
    Delivery planting time, September-November 2024
  • 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.
    Delivery planting time, September-November 2024
  • Allium 'Summer Drummer'

    Late summer flowering, purple red Allium. Height 175 cm.
    Delivery planting time, September-November 2024
  • 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.
    Delivery planting time, September-November 2024
  • Allium 'Violet Beauty'

    A very nice, medium-high, 60-70 cm ornamental onion with star-shaped, violet flowers, multiplies quickly.
    Delivery planting time, September-November 2024
  • Allium 'White Giant'

    An extra tall white allium on sturdy 150 cm tall stems.
    Delivery planting time, September-November 2024
  • 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.
    Delivery planting time, September-November 2024
  • 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.
    Delivery planting time, September-November 2024
  • Allium amethystinum 'Red Mohican'

    Summer-flowering burgundy allium in which a crest develops during flowering from which white flowers emerge.
    Delivery planting time, September-November 2024
  • 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.
    Delivery planting time, September-November 2024
  • 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.
    Delivery planting time, September-November 2024
  • Allium giganteum

    Light purple, large-flowered, one of the largest and most striking ornamental onions, height approx. 150 cm.
    Delivery planting time, September-November 2024
  • Allium karataviense

    A low growing Allium with light purple-pink to white flowers, large purplish-gray leaves. Height 15-20 cm.
    Delivery planting time, September-November 2024
  • Allium karataviense 'Ivory Queen'

    Dutch selection, large globes with ivory white flowers. Decorative blue-gray, broad leaves.
    Delivery planting time, September-November 2024
  • 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.
    Delivery planting time, September-November 2024
  • Allium nigrum

    Synonym A. multibulbosum. Ornamental onion with semi-circular white flower heads, height 70-80 cm. Excellent cut flower.
    Delivery planting time, September-November 2024
  • Allium nigrum 'Pink Jewel'

    A tall, pale pink Allium with half-rounded flower heads and dark flower stems. Slightly variable.
    Delivery planting time, September-November 2024
  • 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.
    Delivery planting time, September-November 2024
  • 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.
    Delivery planting time, September-November 2024
  • Allium schubertii 'Arctic Snow'

    A white flowering form of Allium schubertii. Large 'spiky'-shaped inflorescence, very suitable as a dried flower.
    Delivery planting time, September-November 2024