Pests and Diseases
Natural populations of U. laciniata have only a marginal resistance to Dutch elm disease, rated 2 out of 5, below that of the Japanese Elm. Moreover, in trials in Italy and the USA, U. laciniata was severely damaged by elm leaf beetles Xanthogaleruca luteola, indeed in Italy chemical controls were necessary to ensure the tree's survival, unlike its compatriots U. parvifolia and U. davidiana var. japonica which survived unscathed. The species is also susceptible to Elm Yellows.
Read more about this topic: Ulmus Laciniata
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