Smooth Aster vs Marsh Cinquefoil - TreeTime.ca

Smooth Aster vs Marsh Cinquefoil

Comarum palustre

Symphyotrichum laeve

CUSTOM GROW

NOT AVAILABLE THIS SEASON - MIGHT RETURN

Marsh Cinquefoil
Smooth Aster

Marsh Cinquefoil is a native perennial wetland plant with striking reddish-purple, star-shaped flowers. They bloom in early to mid-summer, providing nectar for bees, flies, and other pollinators. Beyond its summer blooms, the foliage turns red in autumn, adding seasonal interest to wetland landscapes.

Common in wetlands, pond margins, and wet meadows, Marsh Cinquefoil spreads by rhizomes to form colonies or patches that contribute to shoreline stabilization. It thrives in nutrient-poor, saturated soils where many other plants struggle, making it valuable in challenging wetland conditions. With its ecological function and ornamental appeal, it is well-suited for wetland plantings, ecological restoration, and naturalized projects.

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.

Marsh Cinquefoil Quick Facts

Smooth Aster Quick Facts

Zone: 1b
Zone: 3a
Height: 0.5 m (1.5 ft)
Height: 0.9 m (3 ft)
Spread: 0.3 m (1.0 ft)
Spread: 0.6 m (2.0 ft)
Light: partial shade, full sun
Light: partial shade, full sun
Moisture: wet
Moisture: dry, normal
Growth rate: fast
Growth rate: very fast
Life span: short
Life span: short
Growth form: ascending to upright
Spreading: seeds - medium, rhizomes - medium
Suckering: none


Flowers: dark red/maroon, star-shaped
Flowers: purplish-blue; daisy-like
Bloom time: 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, YT, NT, NU, PE
Native to: AB, BC, SK, MB, ON
Other Names: marsh five fingers, purple cinquefoil, purple marshlocks
Other Names: glaucous aster, smooth blue aster