Blue Boy Clematis vs Lewis Mock Orange - TreeTime.ca

Blue Boy Clematis vs Lewis Mock Orange

Philadelphus lewisii

Clematis integrifolia Blue Boy

COMING SOON

(new stock expected: fall of 2026)

NOT AVAILABLE THIS SEASON - MIGHT RETURN

Lewis Mock Orange
Blue Boy Clematis

Lewis Mock Orange is a flowering ornamental shrub that produces an abundance of white, fragrant blooms. The flowers have a sweet scent similar to orange blossoms, with a hint of pineapple. They bloom for several weeks from late spring to early summer, attracting pollinators and other beneficial insects.

Native to North America, Lewis Mock Orange is found from the southernmost portions of Alberta and British Columbia, and south into the northwestern United States. It makes an attractive shrub and can be used in hedgerows, pollinator gardens, and naturalization projects. Blooms occur on the previous year’s wood, so it is recommended to prune after it has finished flowering.

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.

Lewis Mock Orange Quick Facts

Blue Boy Clematis Quick Facts

Zone: 4a
Zone: 2b
Height: 3 m (10 ft)
Height: 3 m (10 ft)
Spread: 2.4 m (8 ft)
Spread: 0.6 m (2.0 ft)
Light: partial shade, full sun
Light: partial shade, full sun
Moisture: dry, normal
Moisture: normal, wet
Growth rate: medium
Growth rate: medium
Life span: medium
Life span: medium
Growth form: upright to arching, multi-stemmed
Spreading: suckering - medium, seeds - low
Suckering: medium


Flowers: fragrant, white
Flowers: steel blue
Bloom time: mid spring to early summer
Hybrid: no
Hybrid: yes
Catkins: no
Catkins: no


Native to: AB, BC
Other Names: california mock orange, lewis mockorange, western mock orange, western syringa, wild mock orange