Allegheny Onion

Allium cernuum

Amaryllidaceae · perennial · native

Last updated

Nodding onion is a native perennial bulb found across much of North America, recognized by its distinctive nodding flower clusters of pink, lavender, or white bell-shaped blooms from June to August. The slender, grass-like foliage is aromatic when crushed. It reaches eight to eighteen inches tall and naturalizes readily in well-drained soils.

Grow in partial to full sun in well-drained soil. Tolerates a range of conditions from rocky slopes to meadow edges. Drought-tolerant once established. Useful in rock gardens, native plant borders, and pollinator plantings. The nodding flower heads distinguish it from other ornamental alliums.

Quick Facts

Height
0-2 ft
Spread
0-1 ft
Growth Rate
Medium
Light
Sun to Part Shade
Soil
Moist, Well Drained
Water
Low to moderate
Hardiness
Zones 4a–8b
Bloom Time
summer
Origin
North America
Data Maturity
Baseline Extension data. Expert review underway.