Black Cottonwood
Populus trichocarpa
About this plant
Populus trichocarpa
Type: Tree · Family: Salicaceae · Native Region: Pacific Northwest
Cottonwoods are magnificent riparian guardians. Common in any sunny and moist habitat, every part of Black Cottonwood is devoted to wetland community building. Robust 100ft+ deep roots connect deep groundwater sources to the surface, while shallow feathered roots suck excess nutrients from water bodies and increase water quality. Cottonwoods move so much water through their trunks that injury can result in literal wellsprings of liquid bursting forth in the springtime. Cottonwood crowns are equally impressive - canopies support a wide host of insect host life, and are thus rife with foraging + nesting water birds alike. Cottonwood branches are famously brittle (making them chock full of nest cavities), and therefore best grown away from human dwellings & high traffic areas.
Growing Conditions
- Sun: Sun to Part Shade
- Water: Wet to Medium
Attributes
- Attracts Birds
- Medicinal
- Portland Approved Plant List
Landscape Use
Rain Garden, Wetland / Riparian, Woodland Garden, Shade Garden, Screening / Privacy, Hedgerow / Wildlife Corridor