Blue Boy Clematis vs Northern Catalpa (Cigar Tree) - TreeTime.ca

Blue Boy Clematis vs Northern Catalpa (Cigar Tree)

Clematis integrifolia Blue Boy

Catalpa speciosa

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Blue Boy Clematis
Northern Catalpa (Cigar Tree)

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.

Northern Catalpa is a striking feature tree with showy flowers, and very large leaves. Its orchid-like flowers are white with yellow and purple accents, and they have a pleasant fragrance. They bloom from late spring to early summer and can last up to two weeks, attracting hummingbirds and pollinators. The leaves are very large, ranging from 15-30 cm long, 12-20 cm wide, forming a canopy that makes it a good shade tree.

They can tolerate dry conditions as well as standing water, air pollution, and salt. These factors and its beauty contribute to its growing popularity as both a boulevard and ornamental tree in colder areas.

Northern Catalpa produces long bean-like capsules and are sometimes called the Cigar Tree in reference to this fruit.

Blue Boy Clematis Quick Facts

Northern Catalpa (Cigar Tree) Quick Facts

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Zone: 2b
Zone: 4a
Height: 3 m (10 ft)
Height: 15 m (50 ft)
Spread: 0.6 m (2.0 ft)
Spread: 9 m (30 ft)
Moisture: normal, wet
Moisture: normal, wet
Light: partial shade, full sun
Light: partial shade, full sun
Hybrid: yes
Hybrid: no
Catkins: no
Catkins: no
Flowers: steel blue
Flowers: white
Growth rate: medium
Growth rate: medium
Life span: medium
Life span: long
Maintenance: medium
Suckering: medium
Suckering: low




Other Names: cigar tree, hardy catalpa, western catalpa