Silky Lupine vs Nodding Onion - TreeTime.ca

Silky Lupine vs Nodding Onion

Lupinus sericeus

Allium cernuum

NOT AVAILABLE THIS SEASON - MIGHT RETURN

NOT AVAILABLE THIS SEASON - MIGHT RETURN

Silky Lupine
Nodding Onion

Silky Lupine is a native perennial wildflower known for its upright spikes of blue to violet flowers. Blooming from late spring into summer, the nectar-rich, showy blossoms attract a variety of pollinators, especially bees and butterflies. The plant’s fine, silky foliage provides soft texture and visual interest, enhancing landscapes throughout the growing season.

Silky Lupine is a nitrogen-fixing plant that enriches soils and supports surrounding vegetation. Its deep roots stabilize soil, and it spreads naturally by ejecting seeds from drying pods. If spread isn’t desired, new seedlings are easy to remove. While it is foraged by some wild animals, it contains alkaloids that are toxic to livestock. Silky Lupine is well-suited to pollinator gardens, naturalization plantings, erosion control, and ecological restoration projects.

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.

Silky Lupine Quick Facts

Nodding Onion Quick Facts

Zone: 4a
Zone: 3a
Height: 0.6 m (2.0 ft)
Height: 0.3 m (1.0 ft)
Spread: 0.5 m (1.5 ft)
Spread: 0.2 m (0.5 ft)
Light: any
Light: partial shade, full sun
Moisture: dry, normal
Moisture: dry, normal
Growth rate: medium
Growth rate: fast
Life span: short
Life span: short
Growth form: clump-forming
Growth form: upright to spreading, clump-forming
Spreading: seeds - high
Spreading: seeds - high
Maintenance: medium
Maintenance: medium

Toxicity: toxic to sheep and other livestock

Toxicity: raw leaves and bulbs can be midly toxic
Foliage: Silky-haired, palmately compound leaves
Foliage: smells of onion when crushed, edible
Flowers: Blue to violet pea-like flowers
Flowers: white, pink, or purple nodding clusters
Bloom time: mid to late summer
Bloom time: late spring to summer
Hybrid: no
Hybrid: no
Catkins: no
Catkins: no


Native to: AB, BC
Native to: AB, BC, SK, ON
Other Names: ladys leek, nodding wild onion