How much water does Eastern cottonwood need?

Eastern cottonwood grows best with consistent moisture and does well in floodplains, riverbanks, and low areas that stay damp. It tolerates occasional dry spells once established but grows fastest with reliable water.

When does Eastern cottonwood bloom?

Eastern cottonwood produces catkins in March and April before its leaves fully expand.

What insects visit Eastern cottonwood?

Bees, beetles, and flies are drawn to Eastern cottonwood, though the tree relies mainly on wind for pollen dispersal rather than insect pollination.

How much sun does Eastern cottonwood require?

This tree grows best in full sun and struggles in shaded conditions, since it is adapted to open floodplain and riverside habitats.

How fast does Eastern cottonwood grow?

Eastern cottonwood is known for rapid growth, often adding several feet of height per year under good moisture and light conditions, making it one of the faster growing trees in its range.

Is Eastern Cottonwood toxic to livestock?

The USDA PLANTS Database does not flag Eastern Cottonwood as toxic to livestock.

Is Eastern Cottonwood HOA-friendly?

Eastern Cottonwood takes more care to look intentional in a front yard. Consider it for backyard or mid-zone beds rather than the street edge.

Eastern Cottonwood

Name: Pollinator Patch
Author: Pollinator Patch

Populus deltoides

Last reviewed: August 2026

Eastern cottonwood is a fast growing shade tree that thrives in full sun along riverbanks and floodplains, blooming in March and April with wind pollinated catkins.

Toxicity unknown

Eastern Cottonwood (Populus deltoides) is not listed by the ASPCA Animal Poison Control Center (opens in new tab) or the other sources we check, so we have no verdict for it either way. Absence from those lists is not a clearance. If your pet shows symptoms after eating any plant, call the ASPCA at (888) 426-4435.

The USDA PLANTS Database (opens in new tab) does not flag Eastern Cottonwood as toxic to livestock.

Light

full sun

Water

high

Size

480"–1200" H × 240"–600" W

Bloom

Mar, Apr

Native to

AL, AR, AZ, CO and 40 more states

Pollinators

bees, beetles, flies

Before you buy

Your city may pay you to plant this

Cities and water utilities offer rebates for replacing lawn with native and water-wise plants. We track 452 programs across 44 states, each with a link to the provider and the date we last checked it.

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Eastern cottonwood is a large, fast-growing native tree that can reach 40-100 feet tall with a broad, spreading canopy. It thrives in full sun with abundant water and produces early spring flowers that support pollinators. This deciduous tree is best suited for large properties where its substantial size can be accommodated.

Growing Eastern Cottonwood

Grow Eastern Cottonwood in full sun and high water. Mature plants reach 480 to 1200 inches tall and spread 240 to 600 inches wide. Expect high maintenance to keep it looking intentional in a front yard.

In an HOA neighborhood

Eastern Cottonwood takes more care to keep looking intentional in a front yard. Maintenance level: high. Consider it for backyard or mid-zone beds rather than the street edge.

Works well in: backyard only.

Extremely large size inappropriate for most residential lots
Messy cottonwood fluff and leaf drop
Fast growth can appear uncontrolled

Wildlife value

Host plant for viceroy butterfly, tent caterpillar moth.

The early spring blooms provide crucial nectar for bees, beetles, and flies when few other plants are flowering. The large canopy offers excellent nesting sites and shelter for birds.

Common questions

How much water does Eastern cottonwood need?: Eastern cottonwood grows best with consistent moisture and does well in floodplains, riverbanks, and low areas that stay damp. It tolerates occasional dry spells once established but grows fastest with reliable water.
When does Eastern cottonwood bloom?: Eastern cottonwood produces catkins in March and April before its leaves fully expand.
What insects visit Eastern cottonwood?: Bees, beetles, and flies are drawn to Eastern cottonwood, though the tree relies mainly on wind for pollen dispersal rather than insect pollination.
How much sun does Eastern cottonwood require?: This tree grows best in full sun and struggles in shaded conditions, since it is adapted to open floodplain and riverside habitats.
How fast does Eastern cottonwood grow?: Eastern cottonwood is known for rapid growth, often adding several feet of height per year under good moisture and light conditions, making it one of the faster growing trees in its range.
Is Eastern Cottonwood toxic to livestock?: The USDA PLANTS Database does not flag Eastern Cottonwood as toxic to livestock.
Is Eastern Cottonwood HOA-friendly?: Eastern Cottonwood takes more care to look intentional in a front yard. Consider it for backyard or mid-zone beds rather than the street edge.

These answers were drafted with an AI model from this plant's data. Verify care details with a local expert.

Native range data from vouchered herbarium specimen records and regional native plant society lists. Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.

If something looks wrong

Common plant problems, and what to check first

These come up on almost any plant. Each guide lists the likely causes in the order they are worth ruling out, with one thing to check before you act on any of them, and links to the source it came from.

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