Black Locust vs Blue Boy Clematis - TreeTime.ca

Black Locust vs Blue Boy Clematis

Clematis integrifolia Blue Boy

Robinia pseudoacacia

NOT AVAILABLE THIS SEASON - MIGHT RETURN

COMING SOON

(new stock expected: fall of 2025)

Blue Boy Clematis
Black Locust

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.

Black Locust is an attractive tree. Its distinctive leaves are made of about a dozen bright green leaflets. It also notable for its fragrant white flowers, which smell of citrus.

Black Locust can grow in many situations, but prefers dry areas with lots of sun. It is robust and is an excellent choice for establishing shade in dry, open areas.

Important note: Much of the Black Locust is toxic to humans and livestock, including seeds, bark, and leaves.

Blue Boy Clematis Quick Facts

Black Locust Quick Facts

Zone: 2b
Zone: 3a
Height: 3 m (10 ft)
Height: 12 m (40 ft)
Spread: 0.6 m (2.0 ft)
Spread: 8 m (25 ft)
Light: partial shade, full sun
Light: full sun
Moisture: normal, wet
Moisture: dry, normal
Growth rate: medium
Growth rate: fast
Life span: medium
Life span: long
Suckering: medium
Suckering: high


Bark: dark reddish brown to balck with furrows
Flowers: steel blue
Flowers: Creamy white flowers in a pyramidal shape bloom in may-june
Seeds: dark brown peapod-like pods
Hybrid: yes
Hybrid: no
Catkins: no
Catkins: no


Other Names: false acacia, yellow locust