White poplar
Populus alba
White poplar (Populus alba) is a tree suited to the Colorado Front Range, rated "Not Recommended" on the 2024 Front Range Tree Recommendation List. It matures to about 40 to 70 ft tall and 40 to 70 ft wide, fast-growing, needs high water, and prefers full sun. White poplar suckers prolifically and is invasive, pulls up sidewalks, hard to remove.
high water40 to 70 ft tall and 40 to 70 ft wide
Photos
- Photo 1: (c) Leon Perrie, some rights reserved (CC BY)
- Photo 2: (c) Mike B, some rights reserved (CC BY-SA), uploaded by Mike B
- Photo 3: (c) Brett Sandford, some rights reserved (CC BY)
- Photo 4: (c) Brett Sandford, some rights reserved (CC BY)
At a glance
Will it survive here?
- Hardiness zones
- USDA 3 to 8
- Water needs
- high water
- Sun
- Best in full sun.
- Soil
- clay, loam, sandy
- Soil pH
- 6.0 to 8.2
- Hail tolerance
- moderate
- Wind tolerance
- low
- Salt tolerance
- moderate
How big, what shape?
- Mature size
- 40 to 70 ft tall and 40 to 70 ft wide
- Mature form
- Rounded
- Spacing / clearance
- ~70 ft of clearance
- Growth rate
- Fast
- Lifespan
- Short-lived
What it looks like, and when
- Fall color
- Gold, yellow
- Foliage
- Deciduous
Who else benefits
- Pollinator value
- low
- Deer
- Not rated
- Colorado native
- No
Also worth knowing
- Fire rating
- Not rated
Site factors to consider
- Critical: Insects & DiseasesMain pressure here is Cytospora canker and Poplar and aspen borers, so keep it vigorous with steady water and a well-chosen site.
- Watch: Short LivedFast but not forever; this one runs short lived here, so enjoy it and plan a successor rather than treating it as a legacy tree.
- Watch: Re-seedsIt sets seed freely and plants itself around the yard, so pull the volunteer seedlings unless you want more of them.
Common problems on the Front Range
- Cytospora canker
- Poplar and aspen borers
- Leaf spot and rust in wet springs
These are general tendencies for this group of plants on the Front Range, 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 your local CSU Extension office.
Frequently asked questions
- Is White poplar good for the Colorado Front Range?
- Yes, White poplar is a well-suited tree for Colorado's Front Range, rated "Not Recommended" on the 2024 Front Range Tree Recommendation List.
- Why is White poplar not recommended on the Front Range?
- The main catches here: Main pressure here is Cytospora canker and Poplar and aspen borers, so keep it vigorous with steady water and a well-chosen site.
- How big does White poplar get?
- It matures to about 40 to 70 ft tall and 40 to 70 ft wide.
- How much room does White poplar need?
- Give White poplar about 70 ft of clearance from buildings, fences, and other trees so the mature canopy isn't crowded.
- What shape does White poplar grow into?
- White poplar typically grows into a broad, rounded crown, the classic shade-tree silhouette. This is the species' usual mature form, named cultivars (columnar, weeping, or compact selections) can differ, so check the specific cultivar.
- Is White poplar hardy on the Front Range?
- White poplar is hardy in USDA 3 to 8. The Colorado Front Range spans roughly USDA 4b to 6a, so it is well within range.
- How much water does White poplar need?
- It needs high water once established.
- How fast does White poplar grow?
- White poplar is a fast-growing tree. Growth rate depends on water and site conditions on the Front Range.
- How long does White poplar live?
- White poplar 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 White poplar turn in fall?
- White poplar turns gold and yellow in autumn. Fall color intensity varies with the season and site on the Front Range.
- Is White poplar native to Colorado?
- No. It is not a Colorado native, but it grows well on the Front Range.
- Is White poplar prone to pests or disease on the Front Range?
- White poplar 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.