The Siberian Elm from northeast Asia is not a really good quality tree. It is very twiggy with brown fissured bark that is not interesting. I have seen a few that look good, but very few. It is fast growing of about 2 feet/year, and it is brittle wooded and loses some branches due to storms, and drops lots of twigs much of the year. In many places in the Midwest, as in northeast Illinois, it is an invasive species that is usually a weed tree. It has invaded almost all of the USA from central Florida to southern California up into southern Canada. It was used to replace the American Elm after the Dutch Elm Disease devastated the latter, but it does not compare. It has tiny leaves about 3/4 to 3 inches long that fall green or poor yellow-green in autumn. It bears its seed in late spring. It should have been left in Asia.