Alphabetical Plant Listing

Populus fremontii (Western Cottonwood)

Fremont Cottonwood, Western Cottonwood, Gila Cottonwood, Alamo


Fast-growing, Populus fremontii (Western Cottonwood) is an upright-spreading deciduous tree with stout branches clad with heart-shaped, bright green leaves turning a lovely yellow in fall. On mature trees, the ash-gray bark is divided into thick, flattened ridges, separated by deep fissures. In early-mid spring, clusters of long drooping catkins appear on separate male and female trees. The female flowers give way to capsules that split open to release clouds of cottony seeds that can be a temporary nuisance. Roots can be invasive as Western Cottonwood develops an extensive root system that can buckle sidewalks and damage sewer lines. Important for birds and butterflies, A good shade tree or specimen to be grown on large properties away from residential areas or in rural areas along streams or ponds where other large trees may not flourish.

  • Grows up to 40-80 ft. tall (12-24 m) and 30-50 ft. wide (9-15 m). Adds 36 in. per year (90 cm).
  • A full sun lover, this plant is easily grown in loamy or sandy, medium to wet, well-drained soils.
  • Low maintenance, this beautiful tree may be subject to aphids, beetle borers, beetle leaves, caterpillars, anthracnose, canker, crown rot, mistletoe and sooty mold.
  • Propagate by fresh seeds, cuttings or layering.
  • Native to Southwestern United States.

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Requirements

Hardiness 3 – 9
Climate Zones 1, 1A, 1B, 2, 2A, 2B, 3, 3A, 3B, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 15, 16, 17, 18, 19, 20, 21
Plant Type Trees
Plant Family Populus - Poplars
Exposure Full Sun
Season of Interest Spring (Mid,Late)
Summer (Early,Mid,Late)
Fall
Height 40' – 80' (12m – 24m)
Spread 30' – 50' (9m – 15m)
Water Needs Low, Average
Maintenance Low
Soil Type Loam, Sand
Soil pH Acid, Alkaline, Neutral
Soil Drainage Moist but Well-Drained, Well-Drained
Characteristics Showy
Native Plants United States, California, Rocky Mountains, Colorado, Utah, Southwest, Nevada, Arizona, New Mexico, Texas
Attracts Birds, Butterflies
Garden Styles Informal and Cottage

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Andrey Zharkikh, Laura Camp, Katja Schultz (Flick)

While every effort has been made to describe these plants accurately, please keep in mind that height, bloom time, and color may differ in various climates. The description of these plants has been written based on numerous outside resources.


Requirements

Hardiness 3 – 9
Climate Zones 1, 1A, 1B, 2, 2A, 2B, 3, 3A, 3B, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 15, 16, 17, 18, 19, 20, 21
Plant Type Trees
Plant Family Populus - Poplars
Exposure Full Sun
Season of Interest Spring (Mid,Late)
Summer (Early,Mid,Late)
Fall
Height 40' – 80' (12m – 24m)
Spread 30' – 50' (9m – 15m)
Water Needs Low, Average
Maintenance Low
Soil Type Loam, Sand
Soil pH Acid, Alkaline, Neutral
Soil Drainage Moist but Well-Drained, Well-Drained
Characteristics Showy
Native Plants United States, California, Rocky Mountains, Colorado, Utah, Southwest, Nevada, Arizona, New Mexico, Texas
Attracts Birds, Butterflies
Garden Styles Informal and Cottage

Great Plant Combination Ideas with Populus - Poplars

Guides with Populus - Poplars

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