Eastern Poplar (cottonwood)

Frequently asked questions

Is Eastern Poplar (cottonwood) good for the Colorado Front Range?

Yes, Eastern Poplar (cottonwood) is a well-suited tree for Colorado's Front Range, rated "Recommended for Most Sites" on the 2024 Front Range Tree Recommendation List.

How big does Eastern Poplar (cottonwood) get?

It matures to about 50–80 ft tall and 40–70 ft wide.

How much room does Eastern Poplar (cottonwood) need?

Give Eastern Poplar (cottonwood) about 70 ft of clearance from buildings, fences, and other trees so the mature canopy isn't crowded.

What shape does Eastern Poplar (cottonwood) grow into?

Eastern Poplar (cottonwood) typically grows into a wide, spreading habit, broader than it is tall, give it room and keep it back from buildings. This is the species' usual mature form, named cultivars (columnar, weeping, or compact selections) can differ, so check the specific cultivar.

Is Eastern Poplar (cottonwood) hardy on the Front Range?

Eastern Poplar (cottonwood) is hardy in USDA 2–9. The Colorado Front Range spans roughly USDA 4b–6a, so it is well within range. That said, it carries a cold-hardiness caution: The average low suits it fine; our real cold risk is the swings, late frosts, and intense winter sun, so wrap young trunks and give it shelter.

How much water does Eastern Poplar (cottonwood) need?

It needs medium to high water once established.

How fast does Eastern Poplar (cottonwood) grow?

Eastern Poplar (cottonwood) is a fast-growing tree. Growth rate depends on water and site conditions on the Front Range.

How long does Eastern Poplar (cottonwood) live?

Eastern Poplar (cottonwood) is relatively short-lived for a tree, so plan to replace it sooner than a long-lived shade tree. Actual lifespan varies with site, water, and care.

What color does Eastern Poplar (cottonwood) turn in fall?

Eastern Poplar (cottonwood) turns gold and yellow in autumn. Fall color intensity varies with the season and site on the Front Range.

Is Eastern Poplar (cottonwood) native to Colorado?

No. It is not a Colorado native, but it grows well on the Front Range.

Is Eastern Poplar (cottonwood) deer-resistant?

Eastern Poplar (cottonwood) is generally considered deer-resistant, though no plant is deer-proof when browse pressure is high.

Is Eastern Poplar (cottonwood) a good firewise plant near the house?

Eastern Poplar (cottonwood) is suitable in defensible-space zones 2–3, best kept back from the house rather than in the area right against the structure. This is general suitability guidance based on CSU Extension firewise plant lists, not a guarantee that any plant won't burn, a well-irrigated, well-maintained plant is the goal. Follow CSU Extension defensible-space guidance and check with your local fire district before planting in the wildland-urban interface.

Is Eastern Poplar (cottonwood) prone to pests or disease on the Front Range?

Eastern Poplar (cottonwood) can be affected by cytospora canker and other issues common to this group on the Front Range. These are general tendencies, not a diagnosis, many are stress-driven and preventable with good siting and watering. For a specific plant or an active problem, consult a certified arborist or CSU Extension.