Globemaster Ornamental Onion

Globemaster Ornamental Onion

Allium giganteum 'Globemaster'

This upright perennial bears fragrant purple flowers in spring.

  • Purple flowers are produced in spring, providing colour through the bloom season.
  • Upright clump, reaching 1 m at maturity; divide every three to four years to maintain vigour.
  • Best in full sun to partial shade to full shade with moist, average, dry, well-drained soil.
Size
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Plant Characteristics

Sunlight
Full sun, Partial shade, Shade
Soil Moisture
Well-drained, Moist, Dry, Average
Drought Tolerant
✓
Hardiness Zone
5 – 5
Mature Height (meters)
0.8 – 1.0
Mature Spread (meters)
0.15 – 0.2
Growth Rate
Medium
Flower Colour
Purple
Foliage Colour
Green
Bloom Time
Spring
Habit
Upright
Deer Resistant
✓
Rabbit Resistant
✓
Pollinator Friendly
✓
Fragrant
✓
Landscape Uses
Border, Rock garden
Growing & Maintenance Tips
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 can be removed by gently pulling on the leaves. Do not over water but let the soil dry out between waterings.
Notes
Also referred to as Giant Ornamental Onion.

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