Description
Ulmus americana ‘New Harmony’ / New Harmony Elm
Planting Points: One of the top Dutch Elm Disease (DED)–resistant American elm cultivars, tested with remarkably high survival compared to historic lines. Classic American elm vase-shaped architecture with strong central leader and arching upper branches. More upright and uniform than many other American elm cultivars. Very tolerant of drought, urban heat, pollution, and soil compaction once established. Fast-growing but develops strong, flexible wood suitable for storms and wind. Resistant to elm leaf beetle and moderately resistant to elm yellows, though monitoring in high‑pressure areas is important. Prefers consistent moisture during early years, drought tolerant at maturity. Prune during late fall or winter to limit disease risk and preserve the vase shape.
Siting This Tree: Excellent for restoring the historic elm‑lined street aesthetic with improved disease resistance. Ideal for boulevards, parks, campuses, large residential yards, and municipal plantings. Excellent choice for creating tall shade over sidewalks, lawns, and open spaces. Allow plenty of room for mature spread—avoid planting beneath low power lines. Performs strongly in urban environments, including compacted or salt‑impacted soils.
