Allium Globemaster

Unveiling the Magnificence of Allium ‘Globemaster’: A Regal Ornamental Onion

Background: Allium ‘Globemaster’ is a remarkable hybrid cross between Allium christophii and Allium macleanii, known for its captivating purple globe-shaped flowers. This bulbous perennial, also referred to as Ornamental Onion ‘Globemaster’ belongs to the esteemed Amaryllidaceae family. Its impressive floral display, bee-friendly nature, fragrance, and enduring blooms make it a cherished addition to any garden.

Characteristics: Standing tall at approximately 32 inches (80 cm), Allium ‘Globemaster’ thrives in abundant sunlight and requires average to dry soil conditions. Its strap-shaped green leaves provide an elegant backdrop to the summer-blooming flowers, which effortlessly enhance borders and beds. Unlike many other flowers, the sterile blossoms of Allium ‘Globemaster’ endure longer, showcasing their splendor throughout the season. The flower heads, even when dried, maintain their allure, adding a captivating touch to the landscape.


Allium ‘Globemaster’ graces the garden with exquisite purple flowers arranged in spherical clusters that can reach an impressive width of 10 inches (25 cm). The visual spectacle created by these globe-shaped blossoms is truly enchanting, attracting butterflies and delighting garden visitors. Additionally, the delightful fragrance emitted by Allium ‘Globemaster’ adds a sensory dimension to its appeal, enhancing the overall experience of your outdoor space.

Origin and Native Habitat: The origin of Allium ‘Globemaster’ traces back to its parentage, Allium christophii, and Allium macleanii. While ‘Globemaster’ itself is a cultivated hybrid, it derives its remarkable characteristics from its progenitors. Allium species are native to various regions across Europe, Asia, and North America, where they have thrived in diverse habitats, including meadows, woodlands, and alpine slopes.

Discovery and Cultivation: Allium ‘Globemaster’ emerged as a result of intentional hybridization efforts, combining the desirable traits of its parent plants. The goal was to create a striking ornamental onion with long-lasting flowers and an appealing globe-like shape. Through careful breeding and selection, ‘Globemaster’ was developed, captivating garden enthusiasts with its regal presence and captivating floral display.

Cultivation and Maintenance of Allium ‘Globemaster’:

Growing Allium ‘Globemaster’ in your garden is a rewarding experience. Here are some essential tips for its successful cultivation:

Planting: In the fall, plant Allium ‘Globemaster’ bulbs 4-6 inches deep and space them approximately 12 inches apart. Choose a well-drained soil enriched with organic matter for optimal growth.

Watering: During the initial year after planting, provide regular watering to establish the plants. Once established, Allium ‘Globemaster’ exhibits excellent drought tolerance and requires less frequent watering.

Fertilizer: Apply a balanced fertilizer in the spring to nourish the plants and promote healthy growth. Follow the manufacturer’s instructions for the appropriate dosage.

Pests and Diseases: Allium ‘Globemaster’ is generally resistant to pests and diseases. However, occasional issues with aphids, spider mites, and powdery mildew may arise. Promptly address any signs of infestation with suitable organic insecticidal soap or fungicide treatments.

Deadheading: While Allium ‘Globemaster’ does not require deadheading, removing spent blooms can encourage new growth and maintain a tidy appearance.

Winter Care: Allium ‘Globemaster’ demonstrates hardiness in USDA zones 3-9. In colder regions, the plant may die back to the ground during winter. To protect the bulbs, apply a layer of mulch such as leaves or straw around the plants. This insulation helps safeguard them from freezing temperatures.

Enjoying the Beauty:

With its bee-friendly nature and captivating fragrance, Allium ‘Globemaster’ brings life and vibrancy to your garden. Create stunning visual displays by planting them in clusters or interspersing them with other complementary flowers and plants. Their impressive height and globular flowers make them ideal for borders, beds, or even as striking focal points in your landscape.

Remember, the regal Allium ‘Globemaster’ thrives in full sun and well-drained soil. Regular watering during establishment, minimal fertilization, and vigilance against potential pests and diseases contribute to the plant’s overall health and longevity. By providing the care and attention it deserves, you can revel in the enduring allure of this magnificent ornamental onion throughout the seasons. So, why not introduce the enchanting Allium ‘Globemaster’ to your garden and witness its majestic presence unfold before your eyes?

Allium 'Globemaster'
Globemaster or Allium ‘Globemaster’ at Kew Gardens, London, UK
Allium 'Globemaster' Kew Gardens
Allium ‘Globemaster’
Allium 'Globemaster'
Purple flowers of Allium ‘Globemaster’

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