American Elm, White Elm 'American Liberty'

I believe that this tree's resistance to Dutch Elm Disease is less than the several other cultivars being offered as Princeton or Valley ...Read MoreForge. This is probably not being offered now. The specimen I planted in 2003 grew fast, but it grew with lots of V-crotching and in the summer of 2015 I found some big cracks in the trunk and branches from too much weight on a weak structure. Therefore, I had to prune away about 40% of the tree to take off all the extra weight. Unfortunately, the several big cracks will never heal and wood rot will enter. If I lived there, maybe I would have caught the problem much earlier.

This cultivar (actually a set of six different clones) has been highly promoted in the US for its putative resistance to Dutch Elm Diseas...Read Moree. Studies have shown that most in practice are still subject to the disease and have poor long-term survival.
http://en.wikipedia.org/wiki/Ulmus_americana_'American_Liber...