Blue Boy Clematis vs Water Arum - TreeTime.ca

Blue Boy Clematis vs Water Arum

Calla palustris

Clematis integrifolia Blue Boy

CUSTOM GROW

NOT AVAILABLE THIS SEASON - MIGHT RETURN

Water Arum
Blue Boy Clematis

Water Arum is a native perennial wetland plant known for its showy white oval sheaths (spathe) that surround a yellow-green, cylindrical flower spike (spadix). It has large, oblong, heart-shaped leaves on stems that rise above the water from shallow, spreading rhizomes. The blossoms are followed in late summer by tiny, pear-shaped fruits that ripen to bright red, adding ornamental interest to wet habitats.

Water Arum provides food for birds and small mammals that eat its berries, and its flowers attract pollinators. It can tolerate cold climates and forms colonies in shallow water and saturated soils. It is well-suited for ecological restoration, riparian planting, naturalisation, and habitat projects in wet and shaded environments.

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.

Water Arum Quick Facts

Blue Boy Clematis Quick Facts

Zone: 1b
Zone: 2b
Height: 0.2 m (0.8 ft)
Height: 3 m (10 ft)
Spread: 0.2 m (0.8 ft)
Spread: 0.6 m (2.0 ft)
Light: shade, partial shade
Light: partial shade, full sun
Moisture: wet
Moisture: normal, wet
Growth rate: medium
Growth rate: medium
Life span: short
Life span: medium
Growth form: colony-forming
Spreading: rhizomes - medium, seeds - low
Suckering: medium

Toxicity: toxic if ingested

Flowers: white sheath around and yellow spike
Flowers: steel blue
Bloom time: spring to summer
Berries: red, in clusters
Hybrid: no
Hybrid: yes
Catkins: no
Catkins: no


Native to: AB, BC, SK, MB, ON, QC, NS, NB, NL, YT, NT, PE
Other Names: bog arum, swamp lily, wild calla, wild dragon