The hybrid cultivar 'Rosehill' was originally raised by the Rose Hill Nurseries of Kansas City, Missouri, from a selection of Ulmus pumila × Ulmus rubra seedlings made in 1951.
'Rosehill' was described as slightly slower growing than its sibling 'Willis', but carrying a heavier crown, with good branching and attractive foliage.
Pests and diseases
No information available.
The tree was later marketed by the Willis Nursery Co. of Ottawa, Kansas. It is not known whether 'Rosehill' remains in cultivation, or if it was ever introduced to Europe or Australasia.
- 'Boulevard': Rosehill Gardens, (Kansas, Missouri), Cat. Spring 1960.
- ^ Ulmus 'Rosehill' in Handbuch der Ulmengewächse, www.ulmen-handbuch.de 
- ^ Green, P. S. (1964). Registration of cultivar names in Ulmus. Arnoldia, Vol. 24. Arnold Arboretum, Harvard University.