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Ulmus ismaelis is a small elm tree from dry limestone canyons in southern Mexico, Honduras and El Salvador, usually under 10 m tall. It is extremely rare in cultivation, so care is based on its wild habitat of dry, warm, well-drained sites.
Ulmus ismaelis is a small tree discovered circa 1997 in southern Mexico by Ismael Calzada in riparian forest along the Mixteco River system in northeastern Oaxaca, where it grows among large boulders in the limestone canyons. The tree has since been found in Honduras and El Salvador. The tree is exceptional in its habitat: dry places, sometimes with less than 50 cm (19.7 in) per annum precipitation, and comparatively low altitudes of 450–750 m (1475–2460 ft).
The tree is extremely rare in cultivation; it was introduced to Europe in 2019 as seed sent to the Grange Farm Arboretum, Lincolnshire, UK. Seedlings were later disseminated by the arboretum to Butterfly Conservation's main trials site, Great Fontley, Hampshire, UK, and the Escuela Tecnica Superior de Ingenieros de Montes, Universidad Politecnica de Madrid, Spain.
Winged elm · American elm · Ulmus 'Androssowii' · Ulmus ×arbuscula · Ulmus minor subsp. canescens · Cedar elm · Ulmus 'Densa' · Wych Elm · Ulmus glaucescens var. glaucescens · Ulmus glaucescens var. lasiocarpa · Ulmus glaucescens · Ulmus harbinensis
Text excerpted from the Wikipedia article Ulmus ismaelis by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.
The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.
