Marsh Cinquefoil vs Knotted Rush - TreeTime.ca

Marsh Cinquefoil vs Knotted Rush

Comarum palustre

Juncus nodosus

CUSTOM GROW

NOT AVAILABLE THIS SEASON - MIGHT RETURN

Marsh Cinquefoil
Knotted Rush

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.

Knotted Rush is a native perennial wetland plant found growing in marshes, swamps, wet meadows, and along shorelines. It spreads by underground rhizomes to form colonies, which can also help stabilize soils and shorelines.

Its upright, slender stems and small clusters of greenish-brown seed heads add structure to wetland plant communities. Knotted Rush is well-suited to wetland conservation, rain gardens, naturalization, and restoration projects. As a cool-season grower, it grows actively during spring and fall, when temperatures are cooler.

Marsh Cinquefoil Quick Facts

Knotted Rush Quick Facts

Zone: 1b
Zone: 1b
Height: 0.5 m (1.5 ft)
Height: 0.5 m (1.5 ft)
Spread: 0.3 m (1.0 ft)
Spread: 0.2 m (0.5 ft)
Light: partial shade, full sun
Light: full sun
Moisture: wet
Moisture: wet
Growth rate: fast
Growth rate: fast
Life span: short
Life span: short
Growth form: ascending to upright
Growth form: upright, colony forming
Spreading: seeds - medium, rhizomes - medium
Spreading: rhizomes - medium


Flowers: dark red/maroon, star-shaped
Bloom time: summer
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, QC, NS, NB, NL, YT, NT, PE
Other Names: marsh five fingers, purple cinquefoil, purple marshlocks