Ulmus pumila 'Hansen'
# Ulmus pumila 'Hansen'

The Siberian elm cultivar Ulmus pumila 'Hansen' is a little-known American tree of obscure origin, possibly raised from seed collected by the horticulturist and botanist Prof. Niels Hansen during his expedition to Siberia in 1897.

## Description

Very similar to the species. A specimen planted in 1978 at the Sir Harold Hillier Gardens in England had attained a height of 8 m by 2002.

* Leaves of 'Hansen'
* 'Hansen' at Hillier Arboretum

## Cultivation

The tree's current status in North America is not known; at least three mature specimens survive in the UK. Significantly, it is not listed in Green's digest of elm cultivar names published in 1964, suggesting a rather belated introduction to commerce.

## Pests and diseases

See under Ulmus pumila.

## Synonymy

* ?'Hansen's Hybrid': Jewell Nursery (ceased trading 2001), Lake City, Minnesota, United States. Wholesale Price List, Fall, 1968 - Spring 1969, p 6, described as "with larger leaf than Chinese (Elm)", but without provenance details.

## Accessions

### Europe

* Brighton & Hove City Council, UK, NCCPG Elm Collection.
* Sir Harold Hillier Gardens, UK. Acc. no. 1978.1606
* Winkworth Arboretum, Surrey, UK. Tree planted 1975, plot K 37.
