Black Locust vs Northern Catalpa (Cigar Tree) - TreeTime.ca

Black Locust vs Northern Catalpa (Cigar Tree)

Catalpa speciosa

Robinia pseudoacacia

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Northern Catalpa (Cigar Tree)
Black Locust

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.

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.

Northern Catalpa (Cigar Tree) Quick Facts

Black Locust Quick Facts

Zone: 4a
Zone: 3a
Height: 15 m (50 ft)
Height: 12 m (40 ft)
Spread: 9 m (30 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: long
Life span: long
Suckering: low
Suckering: high
Maintenance: medium


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


Other Names: cigar tree, hardy catalpa, western catalpa
Other Names: false acacia, yellow locust