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Giganteum Ornamental Onion

Allium 'Giganteum'

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Overview

Allium 'Giganteum', or Giant Ornamental Onion, adds dramatic flair with its lofty stems rising up to 5 feet tall. Each spherical bloom clusters, roughly 6-8 inches in diameter, boast countless star-shaped purple flowers. These low-maintenance perennials thrive in full sun to part shade and prefer well-drained soil. Flowering in late spring to early summer, they also provide striking vertical interest and are excellent for attracting pollinators. Hardy in zones 6-10.

Sun Full, HalfWater MediumZones 4–8Climate Temperate
Giganteum Ornamental Onion (Allium 'Giganteum') — or Giant Ornamental Onion

Culture

Sun
Full, Half
Water
Medium
USDA zones
4–8

Shape & size

Mature height
4–5 Ft.

Classification

Family
Liliaceae
Climate
Temperate

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Photos (63)

Giganteum Ornamental Onion (Allium 'Giganteum') — bulb with lavender blooms
Giganteum Ornamental Onion (Allium 'Giganteum') — or Giant Ornamental Onion; these low-maintenance perennials thrive in full sun to part shade and prefer
Giganteum Ornamental Onion (Allium 'Giganteum') — adds dramatic flair with its lofty stems rising up to 5 feet tall; deep lilac flowers that create a dramatic
Giganteum Ornamental Onion (Allium 'Giganteum') — These low-maintenance perennials thrive in full sun to part shade and prefer well-drained soil; bulb for full
Giganteum Ornamental Onion (Allium 'Giganteum') — Each spherical bloom clusters, roughly 6-8 inches in diameter, boast countless star-shaped purple, image 28
Giganteum Ornamental Onion (Allium 'Giganteum') — they also provide striking vertical interest and are excellent for attracting pollinators; it is hardy in
Giganteum Ornamental Onion (Allium 'Giganteum') — Flowering in late spring to early summer; commonly known as Giganteum Ornamental Onion
Giganteum Ornamental Onion (Allium 'Giganteum') — commonly known as Giganteum Ornamental Onion; allium 'Giganteum' can naturalize by self-seeding under optimal
Giganteum Ornamental Onion (Allium 'Giganteum') — Regarded as one of the tallest and most architectural onions in its genus; this plant typically reaches
Giganteum Ornamental Onion (Allium 'Giganteum') — is a striking and statuesque bulbous perennial renowned for its impressive spherical blooms; each spherical
Giganteum Ornamental Onion (Allium 'Giganteum') — this plant typically reaches heights of 3 to 5 feet; the Giganteum Ornamental Onion also attracts pollinators
Giganteum Ornamental Onion (Allium 'Giganteum') — rising majestically above clumps of gray-green, image 38
Giganteum Ornamental Onion (Allium 'Giganteum') — It is hardy in USDA zones 5 through 8, making it a versatile choice for a variety of landscapes; deadheading
Giganteum Ornamental Onion (Allium 'Giganteum') — These spherical umbels appear in late spring to early summer; they also provide striking vertical interest
Giganteum Ornamental Onion (Allium 'Giganteum') — deep lilac flowers that create a dramatic focal point in any garden; bulb with lavender blooms
Giganteum Ornamental Onion (Allium 'Giganteum') — Resistant to deer and other garden pests; regarded as one of the tallest and most architectural onions in its
Giganteum Ornamental Onion (Allium 'Giganteum') — enhancing the ecological value of the landscape.<br><br>For care; lavender flowers in the garden
Giganteum Ornamental Onion (Allium 'Giganteum') — it adds elegance to floral arrangements; adds dramatic flair with its lofty stems rising up to 5 feet tall
Giganteum Ornamental Onion (Allium 'Giganteum') — the Giganteum Ornamental Onion also attracts pollinators such as bees and butterflies; resistant to deer and
Giganteum Ornamental Onion (Allium 'Giganteum') — Allium 'Giganteum' can naturalize by self-seeding under optimal conditions; minimal maintenance is required
Giganteum Ornamental Onion (Allium 'Giganteum') — potentially providing an increased presence in the landscape over time; or Giant Ornamental Onion
Giganteum Ornamental Onion (Allium 'Giganteum') — minimal maintenance is required; flowering in late spring to early summer
Giganteum Ornamental Onion (Allium 'Giganteum') — Deadheading is not necessary, as the seed heads also provide a unique winter interest; these spherical umbels
Giganteum Ornamental Onion (Allium 'Giganteum') — bulb with lavender blooms; it adds elegance to floral arrangements

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