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

Species

Leaf detail

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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