treeN. America Native

Siouxland Cottonless Poplar

Populus deltoides 'Siouxland'

Not currently listed at our partner nurseries.

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Essentials

At a Glance

Plant Type

Tree

Height

840 inches

Width

480 inches

Light

Full Sun

Zones

4, 5, 6, 7, 8, 9

Water

Medium to high

Humidity

Adaptable

Lifespan

Short-lived for a tree (30-50 years)

Native To

North America

Toxicity

Non-toxic

The Story

Plant Bio

Populus deltoides, the eastern cottonwood, is a very large, fast-growing deciduous tree native to North America. It is known for its broad, spreading crown, tolerance of various soils, and the cotton-like fluff produced by female trees. 'Siouxland' is a male clone selected for its superior resistance to rust and leaf spot diseases, as well as its broad, pyramidal form. Being male, it is 'cottonless,' meaning it does not produce the messy, fluffy seeds.

Bloom Period:

EarlyLate

Uses & Benefits:

Valued for its rapid growth, which can quickly provide shade and a sense of scale to a large landscape. The leaves tremble and rustle pleasantly in the wind, and the fall color is a clear, bright yellow.

Excellent for use in windbreaks, shelterbelts, and for quick screening on large rural properties or parks. Its ability to thrive in moist soils makes it useful for riparian restoration projects.

As a native tree, it is a host plant for the larvae of numerous butterflies and moths, including the viceroy and tiger swallowtail. It provides nesting sites and food for various birds and other wildlife.

Marketplace

Where to Buy

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Planting

How to Grow

Choose a site in full sun with moist soil and plenty of room.
Dig a hole two to three times wider than the root ball.
Place the tree in the hole so the root flare is at ground level.
Backfill with the original soil, ensuring no air pockets remain.
Water deeply and consistently for the first two years to establish.
Apply a layer of mulch to conserve moisture, but keep it off the trunk.

Pro Tip

Do not plant near septic systems, sewers, or foundations, as its aggressive, water-seeking roots can cause significant damage.

Keep It Thriving

Care Guide

Do

Provide plenty of water, especially when young.
Give it a very large space to grow, far from structures.
Monitor for common pests and diseases.
Remove any suckers that appear at the base of the tree.

Don't

Do not plant in small yards or near infrastructure.
Avoid planting in very dry, compacted soil.
Don't heavily prune or top the tree, which encourages weak growth.
Do not ignore signs of canker or borer infestation.

Seasonal Care Calendar

Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Pest Check
Plant
Prune

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Fast-growing windbreak or screenQuick shade for large propertiesNaturalizing in riparian or moist areas

Companion Plants

Salix (Willow) Cornus sericea (Red Osier Dogwood) Sambucus canadensis (Elderberry) Panicum virgatum (Switchgrass) Betula nigra (River Birch)

Multiply

Propagation Methods

Good to Know

Common Questions

Siouxland Cottonless Poplar questions

What zones can Siouxland Cottonless Poplar grow in?

Siouxland Cottonless Poplar is hardy in USDA Zones 4–9. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Siouxland Cottonless Poplar deer resistant?

Not reliably. Deer may browse Siouxland Cottonless Poplar, especially tender spring growth — plan on repellents or fencing where pressure is high.

When does Siouxland Cottonless Poplar bloom?

Siouxland Cottonless Poplar typically blooms in early spring through early spring. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Siouxland Cottonless Poplar need full sun?

Siouxland Cottonless Poplar does best in full sun (6+ hours).