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Public Plant Profile

Globemaster Allium

Allium 'Globemaster'

Category: Perennial • Allium

Globemaster Allium features stunning globe-shaped flowers, perfect for borders and mass plantings.

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Mature Height: 24-36 inches

Mature Width: 1 foot

Bloom Color: Purple

Bloom Time: Late spring to early summer

Light: Sun

Zone: Zones 4-9

Maintenance: Low

Growth Rate: Moderate

Season of Interest: Spring

Foliage: Deciduous

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Bold Outdoors Verified Insight

Designed & Reviewed by

Josh Graber

Owner and Landscape Designer · Kansas State University · 25+ Years Experience

B.S. in Horticulture and Landscape Design – Kansas State University

25+ years of industry experience

Description

Globemaster Ornamental Onion features stunning, large spherical clusters of purple flowers that bloom in late spring to early summer. This striking perennial adds a unique touch to gardens and is perfect for borders or as a focal point. Its tall stems create an impressive display, attracting pollinators and enhancing garden aesthetics.

Ideal Conditions

Prefers full sun and well-drained soil. Tolerates drought once established.

Soil Preferences

Requires good drainage and can adapt to various soil types. Prefers neutral to slightly alkaline pH.

Sun Needs

Sun

Landscape Guidance

Landscape Use

specimenbordermass planting

Special Features

Large globe-shaped flowersattracts pollinators

Wildlife Value

Attracts pollinators and provides nectar.

Resistance / Tolerance

Drought tolerant.

Notes from Our Designer

Best planted in groups for a striking visual impact. Ideal for adding height to garden beds.

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Design Ideas Using This Plant

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What Clients Say

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“Bold Outdoors has provided the highest quality professional landscape design, installation and after installation services at my residence since April, 2014. Josh Graber, the owner of the company, listened to input from…”

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Helpful Next Steps

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Frequently Asked Questions

Is Globemaster Allium a good fit for Kansas City landscapes?

That depends on sun exposure, moisture, spacing, and how the plant will be used in the overall design. Bold Outdoors evaluates those practical conditions before recommending a plant broadly.

How should homeowners use this plant information?

Use the plant profile as a planning tool for size, conditions, and visual role, then connect it to the broader landscape design and installation plan for the property.

Next Step

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