Black Cottonwood, Downy Poplar, River Cottonwood, Swamp Cottonwood, Swamp Poplar
Populusheterophylla

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

Synonym:Populus argentea

Category
Trees

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

Sun Exposure
Full Sun
Sun to Partial Shade

Foliage
Deciduous
Textured

Foliage Color

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)

Where to Grow

Danger

Bloom Color
Brown/Bronze

Bloom Characteristics

Bloom Size

Bloom Time
Late Winter/Early Spring
Mid Spring

Other details

Soil pH requirements

Patent Information

Propagation Methods
From softwood cuttings
From semi-hardwood cuttings
From seed; direct sow outdoors in fall

Seed Collecting