Dutch elm disease was introduced to the United States in the early 1920s. It quickly decimated our American elms, killing hundreds of thousands of trees. The disease first appeared in Kansas in 1957 ...
Dutch elm disease has been present in the United States since the 1920s, when it began its rapid spread across elm populations, killing most American elms. Every year the disease continues to spread ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results