Smooth Aster vs Canada Anemone - TreeTime.ca

Smooth Aster vs Canada Anemone

Anemonastrum canadense (Anemone canadensis)

Symphyotrichum laeve

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Canada Anemone
Smooth Aster

Canada Anemone is a native perennial wildflower known for its white, buttercup-like flowers. Blooming from mid-spring to early summer, it attracts a variety of pollinators, including bees, butterflies, and other beneficial insects. Its deep green foliage, characterized by deeply cut leaves with sharply toothed edges, adds texture and visual interest to the landscape even when the plant is not in bloom.

Canada Anemone grows naturally in moist meadows, forest edges, and riparian zones. Spreading rapidly through underground rhizomes, it forms large colonies that can help stabilize soil. It is well-suited to naturalization and restoration projects, including revegetating difficult, wet sites. Also suitable for rain gardens and pollinator gardens, but extra care and maintenance may be required to control its spread in smaller urban yards.

Smooth Aster is a native perennial wildflower known for its violet-blue, daisy-like flowers. They bloom later in the season, from late summer to early fall. The flowers attract a variety of pollinators, including bees, butterflies, and other beneficial insects. It also serves as a host plant for the Silvery Checkerspot (Chlosyne nycteis) and Pearl Crescent (Phyciodes tharos) butterflies, further enhancing its ecological value. This easy-to-grow wildflower is well suited for native wildflower gardens, pollinator gardens, and naturalization projects.

The Smooth Aster’s non-aggressive root system allows it to spread slowly, and it is more likely to reproduce by seed, which can be controlled through deadheading.

Canada Anemone Quick Facts

Smooth Aster Quick Facts

Zone: 3a
Zone: 3a
Height: 0.3 m (1.0 ft)
Height: 0.9 m (3 ft)
Spread: 0.9 m (3 ft)
Spread: 0.6 m (2.0 ft)
Light: partial shade, full sun
Light: partial shade, full sun
Moisture: normal, wet
Moisture: dry, normal
Growth rate: fast
Growth rate: very fast
Life span: short
Life span: short
Growth form: spreading, colony forming
Spreading: rhizomes - high
Suckering: none
Maintenance: medium

Toxicity: all plants parts toxic if ingested, can cause skin irritation

Flowers: white, cup-shaped
Flowers: purplish-blue; daisy-like
Bloom time: mid spring to early summer
Bloom time: late summer to early fall
Hybrid: no
Hybrid: no
Catkins: no
Catkins: no


Native to: AB, BC, SK, MB, ON, QC, NS, NB, NL, NT, NU, PE
Native to: AB, BC, SK, MB, ON
Other Names: american meadow anemone, meadow anemone, roundleaf anemone, roundleaf thimbleweed
Other Names: glaucous aster, smooth blue aster