Allium 'Globemaster' (Ornamental onion)

Allium 'Globemaster' Photo/Illustration: Chris Curless

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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11
Botanical Name: Allium 'Globemaster' AL-ee-um Common Name: Ornamental onion Genus: Allium
Allium 'Globemaster' is a true showstopper, growing to about 32 inches tall. Very large, majestic purple spheres up to 8 inches across bear numerous star-shaped, deep lilac flowers in May and June.
Care: Provide full sun and well-drained, average to dry soil.
Propagation: Sow seed in spring in containers or in situ. Divide clump-forming plants in spring.
Problems: Bulb rot in damp conditions. Onion fly and thrips.
Height 3 ft. to 6 ft.
Spread 6 in. to 12 in.
Growth Habit Clumps
Growth Pace Fast Grower
Light Full Sun Only
Moisture Dry to Medium
Maintenance Low
Characteristics Attracts Butterflies; Showy Seed Heads
Bloom Time Early Summer; Late Spring; Spring; Summer
Flower Color Purple/ Lavender Flower
Uses , Beds and Borders
Style , Cottage Garden, Rock Garden
Seasonal Interest , Summer Interest, Fall Interest
Type ,Bulbs

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