As part of ongoing research work for almost 15 years, researchers are working to study trees that appear to be resistant to Dutch elm disease and propagate clones of the trees that will then be ...

More than 20 million trees died during the 1960s and 1970s from Dutch elm disease. In the aftermath, the elm was largely forgotten, except among a handful of enthusiasts who have been breeding ...

However, almost all mature American elm trees have been killed in the last 50 years by Dutch elm disease, which is caused by a fungus, Ophiostoma novo-ulmi, introduced from Asia. Elm bark beetles ...

BBC Archive: Dutch elm disease is a fungal illness spread by a bark beetle and first made its appearance in the UK in the 1920s in a mild form. A more virulent strain emerged in the late 1960s ...

Orange spray paint signifies death for some stately elm trees on the University campus this summer. The cause is Dutch elm disease, an ailment with a notorious history in the Twin Cities. In 1977, ...