Canada Plum vs Blue Boy Clematis - TreeTime.ca

Canada Plum vs Blue Boy Clematis

Prunus nigra

Clematis integrifolia Blue Boy

COMING SOON

(new stock expected: fall of 2026)

NOT AVAILABLE THIS SEASON - MIGHT RETURN

Canada Plum
Blue Boy Clematis

Canada Plum is a cold-hardy wild plum native to North America with small red fruit. They ripen in mid to late summer, with bitter, astringent skin surrounding sweet, slightly acidic flesh that clings to the stone. While some enjoy eating the plums fresh, they are more commonly used for baking and preserves. It is considered a universal pollinizer for other plum varieties and is often used for grafting or as a rootstock.

White to pink flowers appear in spring, often before the leaves, providing an early source of nectar and pollen for native bees and other pollinators. Birds and other wildlife also feed on the fruit, adding to its ecological value. Canada Plum can grow as a small tree or large, multi-stemmed shrub. It is well suited to a variety of projects, including fruit orchards for cross-pollination, as well as pollinator plantings, naturalization, and restoration 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.

Canada Plum Quick Facts

Blue Boy Clematis Quick Facts

Zone: 2b
Zone: 2b
Height: 5 m (15 ft)
Height: 3 m (10 ft)
Spread: 4 m (12 ft)
Spread: 0.6 m (2.0 ft)
Light: partial shade, full sun
Light: partial shade, full sun
Moisture: normal, wet
Moisture: normal, wet
Growth rate: fast
Growth rate: medium
Life span: medium
Life span: medium
Suckering: high
Suckering: medium


Fall colour: attractive yellow, gold
Bark: grey and scaly with age
Flowers: white
Flowers: steel blue
Fruit: under 1 inch round yellow fruits with red blush to completely red, tart skin with sweet flesh
Hybrid: no
Hybrid: yes
Catkins: no
Catkins: no


Native to: MB, ON, QC, NB
Other Names: american plum, black plum, canada plum, horse plum, wild plum