Nodding Onion vs Nuttalls Sunflower - TreeTime.ca

Nodding Onion vs Nuttalls Sunflower

Allium cernuum

Helianthus nuttallii

NOT AVAILABLE THIS SEASON - MIGHT RETURN

NOT AVAILABLE THIS SEASON - MIGHT RETURN

Nodding Onion
Nuttalls Sunflower

Nodding Onion is a native perennial wildflower known for its nodding clusters of flowers that range in color from white to pink to purple. The lightly scented blooms provide pollen and nectar for pollinators, especially bees, which can collect while hanging upside down, a capability most other insects lack.

The narrow, grass-like leaves of the Nodding Onion can be used as a seasoning in cooked dishes, though bulbs and raw leaves should not be eaten in large quantities. All parts of the plant have an onion-like aroma when bruised, which helps deter deer and rabbits. They can self-seed readily, so removing spent blooms helps manage their spread. Tolerant of a range of soils, including alkaline, it is well-suited for a variety of plantings, including pollinator gardens and naturalization projects.

Nuttall’s Sunflower is a native perennial wildflower known for its bright, golden-yellow blooms. Flowering from mid to late summer, it offers a late-season nectar source for various bees, butterflies, and other pollinators, while the seeds provide a fall food source for birds. The upright growth habit adds structural height and visual variety to your landscape.

Nuttall’s Sunflower can be found growing in moist to wet meadows, prairies, and open spaces. It can spread quickly via underground rhizomes, making it ideal for large-scale plantings. It is well-suited for naturalization, soil stabilization, riparian zones, and wetland restoration projects. If planting in smaller urban yards or gardens, extra care and maintenance will be required to limit its spread.

Nodding Onion Quick Facts

Nuttalls Sunflower Quick Facts

Zone: 3a
Zone: 2b
Height: 0.3 m (1.0 ft)
Height: 1.2 m (4 ft)
Spread: 0.2 m (0.5 ft)
Spread: 0.5 m (1.5 ft)
Light: partial shade, full sun
Light: full sun
Moisture: dry, normal
Moisture: normal, wet
Growth rate: fast
Growth rate: fast
Life span: short
Life span: short
Growth form: upright to spreading, clump-forming
Growth form: upright, colony forming
Spreading: seeds - high
Spreading: rhizomes - medium, seeds - low
Maintenance: medium

Toxicity: raw leaves and bulbs can be midly toxic

Foliage: smells of onion when crushed, edible
Flowers: white, pink, or purple nodding clusters
Flowers: golden yellow, daisy-like
Bloom time: late spring to summer
Bloom time: late summer to early fall
Hybrid: no
Hybrid: no
Catkins: no
Catkins: no


Native to: AB, BC, SK, ON
Native to: AB, BC, SK, MB
Other Names: ladys leek, nodding wild onion
Other Names: common tall sunflower