Allium Globemaster (Ornamental Onion)
Boasting the biggest flower heads, multiple award-winner Allium ‘Globemaster’ is a striking ornamental onion with huge inflorescences packed with dozens of small star-shaped violet flowers forming a 10-inch wide (25 cm) globe-shaped cluster! Blooming in late spring to early summer, this spectacular bulbous perennial enjoys long-lasting blooms, and its seed heads are ornamental, persisting for weeks after the flower has passed.
Boasting the biggest flower heads, multiple award-winner Allium 'Globemaster' is a striking ornamental onion with huge inflorescences packed with dozens of small star-shaped violet flowers forming a 10-inch wide (25 cm) globe-shaped cluster! Blooming in late spring to early summer, this spectacular bulbous perennial enjoys long-lasting blooms, and its seed heads are ornamental, persisting for weeks after the flower has passed.
- Recipient of the prestigious Award of Garden Merit by the Royal Horticultural Society.
- Growing up to 28 – 36 inches tall (70 – 90 cm), this beauty naturalizes easily and will come back year after year!
- Easily grown in rich, sandy to gritty, dry to medium moisture, well-drained soils in full sun. This Allium is drought tolerant.
- Known for attracting bees, butterflies, moths, and other pollinators, but deer ignore it.
- Stunning in beds, borders, and cottage gardens. Spectacular in large sweeping drifts. Plant in groups (at least 10 to 15 bulbs) for the best visual impact. Excellent as cut flowers for both fresh and dried arrangements!
- Mixes beautifully with other late spring flowering bulbs and creates stunning combinations with pink or white delphiniums, peonies, or irises.
- To be planted in fall.
Requirements
Hardiness | 5 – 9 |
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Heat Zones | 1 – 8 |
Climate Zones | 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 24 |
Plant Type | Bulbs |
Plant Family | Allium |
Exposure | Full Sun |
Season of Interest | Spring (Late)Summer (Early) |
Height | 2' – 3' (60cm – 90cm) |
Spread | 1' – 2' (30cm – 60cm) |
Spacing | 8″ (20cm) |
Depth | 8" (20cm) |
Water Needs | Average |
Maintenance | Low |
Soil Type | Chalk, Clay, Loam, Sand |
Soil pH | Acid, Alkaline, Neutral |
Soil Drainage | Moist but Well-Drained, Well-Drained |
Characteristics | Dried Arrangements, Cut Flowers, Fragrant, Plant of Merit, Showy |
Tolerance | Deer, Drought, Rabbit |
Attracts | Bees, Butterflies |
Garden Uses | Beds and Borders |
Garden Styles | Formal Garden, Informal and Cottage |