Black Cottonwood, Downy Poplar, River Cottonwood, Swamp Cottonwood, Swamp Poplar
Populus heterophylla

Family: Salicaceae (sal-i-KAY-see-ee) (Info)
Genus: Populus (POP-yoo-lus) (Info)
Species: heterophylla (het-er-oh-FIL-uh) (Info)
Synonym:Populus argentea

Category:

Trees

Height:

over 40 ft. (12 m)

Spacing:

30-40 ft. (9-12 m)

over 40 ft. (12 m)

Hardiness:

USDA Zone 6a: to -23.3 C (-10 F)

USDA Zone 6b: to -20.5 C (-5 F)

USDA Zone 7a: to -17.7 C (0 F)

USDA Zone 7b: to -14.9 C (5 F)

USDA Zone 8a: to -12.2 C (10 F)

USDA Zone 8b: to -9.4 C (15 F)

USDA Zone 9a: to -6.6 C (20 F)

USDA Zone 9b: to -3.8 C (25 F)

Sun Exposure:

Full Sun

Sun to Partial Shade

Danger:

Unknown - Tell us

Bloom Color:

Brown/Bronze

Bloom Time:

Late Winter/Early Spring

Mid Spring

Foliage:

Deciduous

Shiny/Glossy-Textured

Other details:

Requires consistently moist soil; do not let dry out between waterings

Soil pH requirements:

Unknown - Tell us

Patent Information:

Unknown - Tell us

Propagation Methods:

From softwood cuttings

From semi-hardwood cuttings

From seed; direct sow outdoors in fall

Seed Collecting:

Unknown - Tell us

Regional

This plant has been said to grow in the following regions:

Benton, Kentucky

Gardeners' Notes:

0
positives
1
neutral
0
negatives
RatingContent
Neutral

On Mar 30, 2005, melody from Benton, KY (Zone 7a) wrote:

I do not grow this plant...information only.

This tree is usually found in wet soils and has a narrow, rounded crown with stout branches.

Often found submerged in flood plains and edges of swamps. It's range is Connecticut south to GA and from N.W. Florida north to southern MI, below elevations of 800'. It is found in Eastern MO and AR.

It grows rapidly and is sometimes used as a shade tree.