Allium 'Millenium'

Ornamental Onion

Herbaceous Bulb / Corm / Tuber, Perennial

Allium 'Millenium': An Essential Addition to Your Garden

Allium 'Millenium', commonly known as the Millennium Onion, is a perennial ornamental onion that offers purple flower clusters atop sturdy stems reaching 18 inches in height. Sporting narrow, grassy green foliage, this robust plant is covered with showy spherical flower heads in mid-summer, attracting an array of pollinators. Its unique, globe-shaped blooms not only add visual interest but also create a striking focal point in your garden or landscape.

This hardy plant thrives in USDA Hardiness Zones 4 to 8, making it an excellent choice for gardeners in the Pacific Northwest and beyond. Allium 'Millennium' prefers full sun and well-drained soil but is adaptable to a variety of conditions. Ideal for borders, rock gardens, or mixed perennial beds, it boasts excellent drought resistance once established, requiring minimal watering. Also, this plant is known for being deer and rabbit resistant, making it a practical choice for gardeners looking to deter these common pests.

Beyond its ornamental appeal, Allium 'Millenium' can be used in cut flower arrangements, enhancing your indoor spaces with natural beauty. Its low-maintenance nature and late-summer blooms make it an invaluable asset for both novice and experienced gardeners alike.

Growing Conditions

Zone: 5, 6, 7, 8, 9

Exposure: Full Sun, Afternoon Sun, Reflected Heat

Water Needs: Drought-tolerant, Low, Occasional

Soil: Gritty, Sandy, Well-drained

Description

Size: 13 - 24 tall x 12 - 18 wide
Shape / Form: Clumping, Irregular
Foliage Texture: Coarse, Medium
Foliage Quality: Coarse, Medium

Features: Attracts Bees, Attracts Butterflies, Drought-tolerant / Water wise, Flowers, Low Maintenance

Foliage Color: Green, Silver / Gray
Leaf Shape: Strappy

Flower Color: Lavender / Lilac
Bloom Season: Aug, Jul, Jun, Summer
Flower Shape: Sphere


Uses and Applications

Landscape Uses: Attracts Pollinators, Beds and Borders, Food for Foraging Wildlife, Hell Strip, Mixed Border, Rock Garden
Special Situations: Deer Resistant, Low Water / No Water, Rabbit Resistant, Reflected Heat
Wildlife: Bees, Butterflies, Deer Resistant, Hummingbirds, Pollinators, Rabbit Resistant

More Design Considerations

Season of Interest: Summer
Position / Role: front of border, continuity creator, matrix / mingler
Plant Behavior: Clumping, Naturalizes

Care and Maintenance

Maintenance Level: low
Maintenance Tasks: Deadheading, Divide Plants to Rejuvenate