Ulmus parvifolia 'Orange Ribbon'
The Chinese Elm cultivar Ulmus parvifolia 'Orange Ribbon' was tested in the United States for cold-hardiness. The name is considered invalid by some, for want of fuller description. Description. Not available. Pests and diseases. The species and its cultivars are highly resistant, but not immune, to Dutch elm disease, and unaffected by the Elm Leaf Beetle "Xanthogaleruca luteola". Cultivation. It is not known (2008) whether the tree is, or has ever been, in commercial cultivation.