Rosy Lights Rhododendron (Azalea) vs Nodding Onion - TreeTime.ca

Rosy Lights Rhododendron (Azalea) vs Nodding Onion

Allium cernuum

Rhododendron x Rosy Lights

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Nodding Onion
Rosy Lights Rhododendron (Azalea)

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.

Rosy Lights Rhododendron is the next flowering, deciduous shrub you need in your garden. It is incredibly cold hardy and produces fragrant, bright pink blooms in late spring. Pruning is recommended after the flowers are finished to control the size and shape of this shrub.

Try Rosy Lights Rhododendron when planning your next hedge/screen, or plant it on its own as a striking accent plant. Part of the Northern Lights Series.

Nodding Onion Quick Facts

Rosy Lights Rhododendron (Azalea) Quick Facts

Zone: 3a
Zone: 4a
Height: 0.3 m (1.0 ft)
Height: 1.5 m (5 ft)
Spread: 0.2 m (0.5 ft)
Spread: 1.2 m (4 ft)
Light: partial shade, full sun
Light: partial shade, full sun
Moisture: dry, normal
Moisture: normal, wet
Growth rate: fast
Growth rate: medium
Life span: short
Life span: medium
Growth form: upright to spreading, clump-forming
Spreading: seeds - high
Suckering: low
Maintenance: medium
Maintenance: medium

Toxicity: raw leaves and bulbs can be midly toxic

Toxicity: All parts of a rhododendron bush, including the leaves, stems and blooms, are toxic to cats, dogs, and horses.
Foliage: smells of onion when crushed, edible
Fall colour: Maroon
Flowers: white, pink, or purple nodding clusters
Flowers: large, pink
Bloom time: late spring to summer
Hybrid: no
Hybrid: no
Catkins: no
Catkins: no


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