Allium ‘Globemaster’ A very well known and spectacular variety with a large head. Remove the spent flowers (except from varieties that are sterile, such as 'Globemaster') if you wish to prevent them from self-sowing. Shipping: No longer available this season. Learn More… Product is Out of Stock. It … Smaller varieties will take up less room, requiring a spacing of between 3-6 inches. Allium bulbs are ideally planted before the end of November. The giant round purple flower globes of this magnificent allium are the perfect way to introduce colour and structure to your garden between spring and summer, and when it comes to ornamental alliums, Allium 'Globemaster' truly is one of the best! Globemaster Alliums. Like onions, they do return year after year. Details. The large 6-inch globes are absolutely stunning in deep purple. ‘Globemaster’, a hybrid, bears deep-violet, 6- to 8-inch, globe-shape flower heads and grows 3 to 4 feet tall. Allium Globemaster This is the largest flowered of the giant alliums, with densely packed heads of starry violet-purple flowers on sturdy long stems above a cluster of strappy green leaves. For best performance, provide the Globemaster with full sun and quick-draining soil. It works well when planted in drifts with ornamental grasses and other alliums, including lighter flowered ‘Beau Regard’. Depending on the variety they can grow to 3 feet high with flowers the size of baseballs like the famous Globemaster allium (Allium giganteum). For many, ‘Globemaster’ is the standard against which all other ornamental alliums are judged. Liliaceae. CareProvide full sun and well-drained, average to dry soil.. PropagationSow seed in spring in containers or in situ.Divide clump-forming plants in spring. They’re so beautiful, whimsical, magical, and definitely eye-catching! Big-headed alliums such as Globemaster and Schubertii rarely produce viable seeds. These needs may be taken care of by rainfall and by adding organic mulch after planting. The Globemaster giant allium is the horticultural offspring of selective breeding between Allium christophii, sometimes called the Star of Persia flowering onion, and A. macleanii. Allium care is simple if planted in the right soil and sunlight. Colors include shades of blue, pink, purple, white, and yellow. Botanical Name. Video Click an image to see it above: A big Allium favorite from coast to coast. Blooming in late spring to early summer, this Giant Allium enjoys long-lasting blooms and remains ornamental in the garden well into summer. Plant in late fall to prevent the bulb from starting to grow before spring. Allium 'Globemaster' (Ornamental Onion) Boasting of the biggest flower heads, multiple award-winner Allium 'Globemaster' is a striking ornamental onion with its inflorescence consisting of dozens of small star-shaped violet flowers forming a 10 inch wide (25 cm) globe-shaped cluster! The florets are tightly packed on the perfectly rounded inflorescences. Allium: Variety: Globemaster Type: Hardy Perennial Bulb Common Name: Ornamental onion Border Position: Middle Bulb Size: 18/20 Soil Type: Chalky, Fertile, Sandy Scent: Unscented Site: Full Sun: Moisture: Well-drained Height: 85cm (34in) Spacing: Plant 15cm (6in) deep, 30-45cm (12-18in) apart. Today, they can be found growing pretty much everywhere except tropical regions and Australia.. As an allium, this wonderful plant is part of the onion family, but don't worry. Flowers: June-July. Allium ‘Globemaster’ is a fantastic choice for sunny borders, bearing rounded, deep violet flower heads, 15-20cm in diameter, from late spring to early summer. Sturdy stems carry flowers with a diameter of up to 20 cm! Pests/Diseases: Alliums have few problems except when planted too shallowly or in wet soil. However, Globemaster allium (Allium cristophii x macleanii "Globemaster") belongs with other showy bloomers in the perennial garden. Other varieties are shorter with flowers that droop (A. cernum or nodding alliums) or have stringy petals (A. schubertii or hair allium) which look like fireworks to me. It makes a wonderful cut flower. Spacing 6-8". Allium Globemaster A 1971 hybrid cross of A. christophii and A. macleanii, Globemaster transforms gardens with statuesque, aster-violet globes that grow up to 10"-wide. AM015621. They don't smell like onions unless you crush their foliage. Allium Care Must-Knows Alliums are tough plants that have quite a few tricks up their sleeves. A perfect background plant. Alliums come in all shapes and sizes, ranging from tiny 1-inch round heads to flowers nearly 1 foot across and varying heights up to 6 feet tall. When alliums have finished flowering, you can remove the spent heads or leave them in place. 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