Dutch Elm Disease-Resistant American Elms for Southern Landscapes

Choosing the Right American Elm for Disease Resistance

The American elm (Ulmus americana) once graced streets nationwide until Dutch elm disease (DED) decimated populations. New resistant cultivars offer hope for revival.

'Jefferson' American Elm

• High DED resistance
• Classic vase-shaped form
• Difficult to propagate—limited availability
• May be challenging to source

'Valley Forge' — The Reliable Alternative

• Released by U.S. National Arboretum (1995)
• Excellent DED tolerance
• May show temporary leaf wilting after infection but recovers vigorously
• Widely available in nursery trade
• Fast-growing, adaptable to various soils

Other Resistant Options

• 'Princeton' — Early release, proven track record
• 'New Harmony' — Good resistance, upright form
• Hybrid elms — Complex crosses with Asian species for resistance

Planting Considerations

• Full sun, well-drained soil
• Space for mature size (60-80 ft tall, 40-60 ft wide)
• Monitor for elm leaf beetle and scale
• Diversify—don't plant monocultures

With resistant cultivars, the American elm can once again be a viable shade tree option for Southern landscapes.