Growing Guide
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Allium, 'Globemaster'

Spring-Flowering Bulb, Summer and Fall-Flowering Bulb

Allium cristophii x macleanii 'Globemaster'
Alliaceae Family

Tall and showy, Allium 'Globemaster' produces dense 6- to 8-inch globes of blue-purple blooms on stems up to 3 feet tall. Used as a commercial cut flower.

Site Characteristics
  • full sun

Soil conditions:

  • requires well-drained soil
Prefers fertile, very well-drained soil.

Hardiness zones:

  • 6 to 10
Plant Traits

Lifecycle: perennial

Ease-of-care: easy

Height: 2.5 to 3.5 feet

Spread: 1 to 1.5 feet

Bloom time: mid-summer

Flower color:

  • blue
  • violet

Flowers are bluish-purple.

Foliage color: gray-green

Foliage texture: medium

Shape: upright

Shape in flower: flower stalks with flowers as globes

Special Considerations
Special characteristics:
  • deer resistant
  • non-aggressive
  • non-invasive
  • not native to North America - product of horticultural breeding
Special uses:
  • cut flowers
Growing Information
How to plant:

Propagate by division or separation - Plant the bulbs 4" beneath the soil surface in fall.

Divide in fall.

The seeds of this hybrid are sterile.

Maintenance and care:
Apply mulch in fall for winter protection.

More growing information: How to Grow Bulbs

Onion fly
White rot
Bulb rot
Purple blotch
Gray mold