Blue Boy Clematis vs Blue Flax - TreeTime.ca

Blue Boy Clematis vs Blue Flax

Linum lewisii

Clematis integrifolia Blue Boy

NOT AVAILABLE THIS SEASON - MIGHT RETURN

NOT AVAILABLE THIS SEASON - MIGHT RETURN

Blue Flax
Blue Boy Clematis

Blue Flax is a native perennial wildflower known for its blue to violet flowers. Each flower lasts just a single day, but new blooms appear continuously, providing weeks of colour. This extended flowering period provides a reliable display from late spring into summer and attracts a variety of pollinators.

They can self-seed readily, so removing spent blooms helps manage their spread. Birds feed on the seeds, and when cooked, they are edible and are described as having a mild, nutty flavour. The plant grows in loose clumps with slender stems and fine foliage. Young plants are leafy, but as they mature, most leaves are shed.

Blue Flax grows well in a wide range of soils, including poor or sandy conditions, and is drought-tolerant once established. The deep root system helps to stabilize soil and prevent erosion. They are well-suited for pollinator gardens, restoration, naturalization, and xeriscaping 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.

Blue Flax Quick Facts

Blue Boy Clematis Quick Facts

Zone: 3a
Zone: 2b
Height: 0.6 m (2.0 ft)
Height: 3 m (10 ft)
Spread: 0.3 m (1.0 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: fast
Growth rate: medium
Life span: short
Life span: medium
Growth form: upright, rounded, clump-forming
Spreading: seeds - high
Suckering: medium
Maintenance: medium

Toxicity: toxic to some animals, raw seed toxic

Flowers: pale to deep blue-violet
Flowers: steel blue
Bloom time: late spring to mid summer
Hybrid: no
Hybrid: yes
Catkins: no
Catkins: no


Native to: AB, BC, SK, MB, ON, YT, NT, NU
Other Names: lewis flax, lewis wild blue flax, prairie flax, wild blue flax