Native to Europe, Asia or North America, depending on the species, it is a widespread tree in the countryside, in parks and in the urban green. The wood was used until Roman times as a support for vines, so much so that it became a symbol of support and protection even in the Christian religion. Thanks to its elegance and resistance, the elm has become a protagonist of parks and trees of avenues and roads. In recent times, unfortunately its diffusion was limited by the graphiosis, a disease that almost made it disappear from the landscape until the 90s, when thanks to protection programmes the elm was again cultivated.  