Blue Boy Clematis vs Marsh Cinquefoil - TreeTime.ca

Blue Boy Clematis vs Marsh Cinquefoil

Comarum palustre

Clematis integrifolia Blue Boy

CUSTOM GROW

NOT AVAILABLE THIS SEASON - MIGHT RETURN

Marsh Cinquefoil
Blue Boy Clematis

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.

Blue Boy Clematis is a cold-hardy, fast growing, woody climbing vine. Hundreds of stunning steel-blue bell shaped flowers adorn the vine throughout the summer that droop and appear to hang in the air. The fibrous stems spread and create a fan-like symmetry shape.

This species will do best with support from a trellis, fence, or even other shrubs or tree stumps.

The Blue Boy Clematis was developed in Manitoba, Canada in 1947 by famous breeder Frank L. Skinner by crossing C. integrifolia x C. viticella, but it didn’t gain popularity until the 1990’s.

Marsh Cinquefoil Quick Facts

Blue Boy Clematis Quick Facts

Zone: 1b
Zone: 2b
Height: 0.5 m (1.5 ft)
Height: 3 m (10 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: normal, wet
Growth rate: fast
Growth rate: medium
Life span: short
Life span: medium
Growth form: ascending to upright
Spreading: seeds - medium, rhizomes - medium
Suckering: medium


Flowers: dark red/maroon, star-shaped
Flowers: steel blue
Bloom time: summer
Hybrid: no
Hybrid: yes
Catkins: no
Catkins: no


Native to: AB, BC, SK, MB, ON, QC, NS, NB, NL, YT, NT, NU, PE
Other Names: marsh five fingers, purple cinquefoil, purple marshlocks