The Chinese elm cultivar Ulmus parvifolia 'State Fair' was cloned from a tree growing in the grounds of the Oklahoma State Fair, Oklahoma City.
The tree is distinguished by its orbicular crown, dense foliage and attractive exfoliating bark. http://www.ulmen-handbuch.de/handbuch/Liste_1_wiss_neu.pdf
The species and its cultivars are highly resistant, but not immune, to Dutch elm disease, and unaffected by the Elm Leaf Beetle Xanthogaleruca luteola.
Listed originally by the Sunshine Nursery, Clinton, Oklahoma, in 1994, it is not known to be in cultivation beyond North America.
None known.