Birch Leaf Spirea vs Nodding Onion - TreeTime.ca

Birch Leaf Spirea vs Nodding Onion

Allium cernuum

Spiraea betulifolia

NOT AVAILABLE THIS SEASON - MIGHT RETURN

NOT AVAILABLE THIS SEASON - MIGHT RETURN

Nodding Onion
Birch Leaf Spirea

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.

Birch Leaf Meadowsweet is a small, rounded shrub, reaching 3 to 4 feet high.

In the early summer, white flowers emerge with dark green foliage. Come fall, birch-like leaves turn a kaleidoscope of red, orange, and purple adding seasonal interest.

Native to Japan and Eastern Asia, this dwarf shrub attracts butterflies and is an excellent option for the front row of a shrub border.

Nodding Onion Quick Facts

Birch Leaf Spirea Quick Facts

Zone: 3a
Zone: 4a
Height: 0.3 m (1.0 ft)
Height: 0.9 m (3 ft)
Spread: 0.2 m (0.5 ft)
Spread: 0.9 m (3 ft)
Light: partial shade, full sun
Light: full sun
Moisture: dry, normal
Moisture: normal, wet
Growth rate: fast
Growth rate: medium
Life span: short
Life span: short
Growth form: upright to spreading, clump-forming
Spreading: seeds - high
Suckering: none
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
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
Other Names: birch leaf meadowsweet, shiny leaf spirea, white spirea