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Key characteristics

Family: Amaryllidaceae
Height: 12 to 18 inches
Width: 12 to 18 inches
Flower color: Purple-pink, globe-shaped blooms
Foliage color: Bright green
Bloom time: Mid to late summer
Light: Full sun
Water: Moderate; well-drained soil
Maintenance: Low; no need for deadheading
Growing zone: USDA zones 4 to 9
Wildlife: Butterflies, bees, and beneficial insects

Bulbs

Allium ‘Millenium’

Millenium Ornamental Onion

Allium 'Millenium' is a robust perennial known for its rounded clusters of vibrant purple-pink flowers that bloom midsummer through late summer. The long-lasting blossoms are held on sturdy stems above clumps of glossy, deep green foliage, providing a burst of color during the growing season's peak. These nectar-rich flowers are highly attractive to pollinators, drawing bees and butterflies to the garden.

This hybrid allium was developed to showcase reliable performance and ornamental appeal, making it a favorite among gardeners.

Light

Full sun

Water

Moderate; well-drained soil

Bloom time

Mid to late summer

Find this plant

Works well in

Borders
Sun Gardens
Containers
Cut Flower Gardens
Pollinator Gardens

Companion plants

Garden phlox · Black-eyed Susans · Daylilies · Lavender · Coreopsis · Russian sage

Design tip

The long summer show pairs well with plants that peak earlier, keeping one area interesting for months. Drift them in uneven groups for a natural look, and interplant with perennials that fill the gap after the leaves die back.

Printable plant sheet (PDF)