Elm — American – 'Valley Forge', 'New Harmony', 'Princeton'
Ulmus americana
Elm — American – 'Valley Forge', 'New Harmony', 'Princeton' (Ulmus americana) is a tree suited to the Colorado Front Range, rated "Recommended for Most Sites" on the 2024 Front Range Tree Recommendation List. It matures to about 50–70 ft tall and 40–60 ft wide, and needs low to medium water. Scale.
low to medium water50–70 ft tall and 40–60 ft wideXeric / water-wiseDeer-resistant
Photos




At a glance
- Rating
- Recommended for Most Sites
- Botanical name
- Ulmus americana
- Variety / cultivar
- American – 'Valley Forge', 'New Harmony', 'Princeton'
- Type
- Tree
- Mature size
- 50–70 ft tall and 40–60 ft wide
- Water needs
- low to medium water
- Colorado native
- No
- Foliage
- Deciduous
- Soil
- clay, loam, sandy
- Soil pH
- 6.0–8.2
- Hail tolerance
- moderate
- Wind tolerance
- moderate
- Salt tolerance
- moderate
Site factors to consider
- Critical: Insects & Diseases
Planting & establishment
Water deeply every 7–10 days through the first 2 summers. Winter water 1–2×/month October–March when soil is dry and unfrozen — winter desiccation is a top killer of newly-planted trees. Year 3: taper to 2×/month in summer, then rely on natural precipitation.
Frequently asked questions
- Is Elm — American – 'Valley Forge', 'New Harmony', 'Princeton' good for the Colorado Front Range?
- Yes. Elm — American – 'Valley Forge', 'New Harmony', 'Princeton' is included in the Front Range Plant Finder as a tree suited to Colorado's Front Range, rated "Recommended for Most Sites" on the 2024 Front Range Tree Recommendation List.
- How big does Elm — American – 'Valley Forge', 'New Harmony', 'Princeton' get?
- It matures to about 50–70 ft tall and 40–60 ft wide.
- How much water does Elm — American – 'Valley Forge', 'New Harmony', 'Princeton' need?
- It needs low to medium water once established.
- Is Elm — American – 'Valley Forge', 'New Harmony', 'Princeton' native to Colorado?
- No — it is not a Colorado native, but it grows well on the Front Range.