Idaho residents have a new summer pest to worry about: the elm seed bug (Arocatus melanocephalus). These insects, about 6 mm ...

These 5 tree species are dying. Scientists are racing to save them. Invasives have largely wiped out the American chestnut and elm, caused “hell” with the beech, and are now wreaking havoc on ...

Joel Harrison-Off, the acting supervisor of the city’s forest healthcare and management, said the tree is one of the largest native elm trees in Toronto and was one of the few survivors of Dutch Elm ...

Since its introduction by enthusiastic horticulturists to the United States nearly 240 years ago as a shade tree and botanical specimen, Ailanthus has spread to all but six U.S. states, and has ...

Purdue Landscape Report: We have received a few elm tree samples this year with a disease we do not often see, but which is relatively common: black spot of elm.This disease, also called elm ...

Britain lost 25 million of its 'graceful giants', the elm tree — but there's finally real hope that they are coming back. Once the hallmark of a rural idyll, our English elms were almost eradicated by ...

For decades, the American elm population has dwindled, and one of its greatest threats is the deadly Dutch elm disease, which has taken its toll on Brown’s campus, too. The tree removal ...

In South America, which is home to the Amazon Rainforest, 3,356 out of the 13,668 assessed tree species are at risk of extinction due to deforestation for crop farming and livestock ranching.

Dutch elm disease has claimed the life of a 100-year-old elm tree in the Waikato, despite the tree being vaccinated.. The fatal and fast-spreading disease is caused by a species of fungus and ...