Canada Plum & American Plum vs Blue Boy Clematis - TreeTime.ca

Canada Plum & American Plum vs Blue Boy Clematis

Prunus nigra and americana

Clematis integrifolia Blue Boy

COMING SOON

(new stock expected: fall of 2025)

NOT AVAILABLE THIS SEASON - MIGHT RETURN

Canada Plum & American Plum
Blue Boy Clematis

Canada and American Plum are almost identical in appearance and growth needs. These plants are short and stout fruit trees native to North America.

This hardy ornamental is excellent for both city dwellings as well as rural areas. During the spring, the white and pink blossoms are long lasting. The tasty fruit is suitable for fresh eating, baking, and preserves. These trees are not widely distributed and pure seed can be hard to come by.

Both are commonly used as rootstock and are considered universal pollinizers for other plum varieties.

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 & American 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


Other Names: american plum, black plum, canada plum, horse plum, wild plum