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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 4–8Type BulbClimate Temperate
Giganteum Ornamental Onion (Allium 'Giganteum') — is a striking and statuesque bulbous perennial renowned for its impressive spherical blooms; each spherical

Culture

Sun
Full, Half
Water
Medium
USDA zones
4–8

Shape & size

Mature height
4–5 Ft.

Classification

Type
Bulb
Family
Liliaceae
Climate
Temperate

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Photos (63)

Giganteum Ornamental Onion (Allium 'Giganteum') — minimal maintenance is required; flowering in late spring to early summer
Giganteum Ornamental Onion (Allium 'Giganteum') — Allium 'Giganteum' can naturalize by self-seeding under optimal conditions; minimal maintenance is required
Giganteum Ornamental Onion (Allium 'Giganteum') — lavender flowers in the garden; is a striking and statuesque bulbous perennial renowned for its impressive
Giganteum Ornamental Onion (Allium 'Giganteum') — These spherical umbels appear in late spring to early summer; they also provide striking vertical, image 62
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') — lavender flowers in the garden
Giganteum Ornamental Onion (Allium 'Giganteum') — rising majestically above clumps of gray-green
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') — Resistant to deer and other garden pests
Giganteum Ornamental Onion (Allium 'Giganteum') — deep lilac flowers that create a dramatic focal point in any 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') — These spherical umbels appear in late spring to early summer; they also provide striking vertical interest
Giganteum Ornamental Onion (Allium 'Giganteum') — Regarded as one of the tallest and most architectural onions in its genus
Giganteum Ornamental Onion (Allium 'Giganteum') — Flowering in late spring to early summer
Giganteum Ornamental Onion (Allium 'Giganteum') — this plant typically reaches heights of 3 to 5 feet; the Giganteum Ornamental Onion also attracts, image 60
Photographs by 14 contributors

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