The Award-Winning Pollinator Magnet

Millenium Allium (Allium 'Millenium') was named Perennial Plant of the Year for good reason: it's a tidy, clumping ornamental onion that erupts in mid to late summer with a profusion of rounded, rosy-purple globes that hum with bees and butterflies. The glossy green, grassy foliage stays neat all season, it never flops or spreads aggressively, and it's about as carefree as a perennial gets. Tough, drought-tolerant, and deer-resistant, it's a must-have for sunny Edina, Maple Grove, and Woodbury borders.

Landscape Uses

Use Millenium in pollinator and sunny borders, mass plantings, edging, and containers. Its long bloom and tidy habit pair beautifully with coneflowers, ornamental grasses, and sedum, and the flowers are excellent for cutting.

Best Time to Plant

Plant in spring or early fall, when cooler weather and steady moisture help roots establish.

How to Plant

Dig a hole twice as wide as the root ball and just as deep. Set the crown level with the soil, backfill, water in well, and mulch 2–3 inches deep.

Watering

First Year: Water deeply 1–2 times per week to establish the roots.
After Year One: Water during dry spells. Allium is quite drought tolerant once established.
Drip Irrigation: A drip line provides efficient, low-water moisture.

Frequently Asked Questions

Why is Millenium so popular?
It was Perennial Plant of the Year, prized for its long bloom, tidy clumping habit, and value to pollinators.

Does it spread or flop?
No, it forms a neat clump that stays put and holds its shape.

Is it hardy in Minnesota?
Yes, hardy to Zone 4 and reliable across most of the state.

Is it deer resistant?
Yes, the onion scent makes alliums highly deer- and rabbit-resistant.

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Pair Millenium with Summer Beauty and Windy City allium, coneflowers, and grasses for a pollinator-friendly summer border.