Ulmus 'Sapporo Autumn Gold'

Ulmus 'Sapporo Autumn Gold'

'Sapporo Autumn Gold' is one of the most successful hybrid elm cultivars ever marketed, widely planted across North America and western Europe, although it has now been largely supplanted by more recent introductions. Arising from a chance crossing in 1958 of the Siberian Elm Ulmus pumila and the Japanese Elm Ulmus davidiana var. japonica in the Botanical Garden of Hokkaido University, Sapporo, it was cultivated at the University of Wisconsin–Madison by the late Prof. Eugene Smalley and patented in 1975.