Tags: Cultivar (Cultivated Variety).
The Japanese Elm Ulmus davidiana var. japonica cultivar ‘Thomson’ is a hardy cold-resistant selection assessed by the Prairie Farm Rehabilitation Administration (PFRA) Nursery (now the AAFC-PFRA&E Shelterbelt Centre) at Indian Head Saskatchewan in the 1970s as part of its shelterbelt tree research. [1] [2].The tree was one of a number of Japanese Elms planted in an experimental shelterbelt at Indian Head in 1953.