Tree Library

Valley Forge Elm

Valley Forge elm is a fast-growing American elm cultivar known for its strong structure, classic vase-shaped form, and outstanding resistance to Dutch elm disease. It performs well in Colorado landscapes, providing broad shade, durability, and long-term reliability for streets, parks, and large residential yards.

Quick specifications

Mature Height
60–70 ft
Mature Spread
45–55 ft
Growth Rate
Moderate to fast
Sun
Full sun required for best structure and growth
Water
Needs ample space for mature canopy development• Deep, consistent watering during establishment
Hardiness
60+ years with proper care
Genus
Elm (Ulmus)

Identification

  • valley forge elm

    Species

  • valley forge elm tree leaves

    Leaf detail

  • valley forge elm tree branch

    Structure

Overview

Valley Forge elm is a fast-growing American elm cultivar known for its strong structure, classic vase-shaped form, and outstanding resistance to Dutch elm disease. It performs well in Colorado landscapes, providing broad shade, durability, and long-term reliability for streets, parks, and large residential yards.

Key Characteristics

  • Mature Size: 60–70 ft tall | 45–55 ft wide
  • Growth Rate: Moderate to fast
  • Form: Upright vase-shaped with broad canopy
  • Fall Color: Yellow
  • Lifespan: 60+ years with proper care

Colorado Growing Conditions

Exceptional resistance to Dutch elm disease

Strong tolerance of wind, heat, cold, and urban stress

Classic American elm form with improved durability

Performs reliably in streetscapes and large landscapes

Planting Considerations

  • Full sun required for best structure and growth
  • Needs ample space for mature canopy development• Deep, consistent watering during establishment
  • Early structural pruning improves long-term form

Common Problems

  • Occasional elm leaf beetle feeding
  • Leaf scorch during prolonged drought
  • Generally very low disease pressure

Best Use Scenarios

  • Large residential properties
  • Streetscapes and boulevards
  • Replacement for lost American elms
  • Wind-exposed Front Range sites
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