University of Florida

Populus heterophylla

Common name(s): Swamp Cottonwood, Swamp Poplar, Cottonwood, Black Cottonwood

Plant type: evergreen large tree
Primary method of propagation: seed
Alternate propagation method(s): cutting

Propagation by Cuttings

Cutting type: secondary
Time of year to take cuttings: Winter
Cutting maturity: semi-hardwood, hardwood
Rooting environment: outdoor beds

Propagation by Seed

Time of year to collect seed: Autumn
Time of year to sow seed: Autumn
Preferred temperature for germination: 84-89 degrees F
Comment: Pre-soaking of seeds in a two molar solution of sucrose for 30 minutes. Time required to germinate is 2 days. Some may only take 12 hours.