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Allium giganteum Globemaster

Ornamental Onion

Large flowers are composed of dense, star-shaped florets. As the flowers fade, new florets take their place, so the blooming period is that much longer. Long, strap-shaped, green leaves are not used for culinary purposes.

  • »  Huge balls of purple star-shaped florets
  • »  As the flowers fade, new florets take their place
  • »  Flowers are borne on stout stems
  • »  Strap-like, gray-green basal leaves
  • »  Bloom Time: May to June

1gal
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  • Category:Perennials
  • Hardiness Zone:5
  • Height:80-100 cm
  • Spread:15-20 cm
  • Bloom Color: Purple
Exposure
• Full Sun
• Partial Sun/Shade
Soil Moisture
• Moist to Average
• Average to Dry Soils
• Well-drained
Attracts Wildlife
• Attracts Butterflies
Growth Rate
• Fast
• Medium
Critter
• Deer Resistant
Attributes
• Cut Flower/Foliage
• Edible
• Drought Tolerant
• Fragrant
• Heat Tolerant
• Xeriscape
Flowering Time
• Spring
• Lt. Spr-Sum
Habit
• Upright
Foliage Color
• Green
Landscape uses
• Border/edging
• Rock garden
• Rooftop (extensive)
Planting instructions
• Container Plants
Growing & Maintenance Tips for Allium giganteum 'Globemaster'

Allium grow best in a rich, fertile, well-drained soil. Leaves die back as flowers begin; don't cut back the foliage as it feeds the bulb for next year's flower. Once the flower is spent, remove the flower stalk and leave the foliage until it completely dies back. It then can be removed by gently pulling on the leaves. Do not over water and let the soil dry out between waterings.