The disease has decimated American elm trees in other parts of Saskatchewan since it arrived in the 1980s. Saskatoon was free of it until this point. It's caused by a fungus that clogs the water ...

In this Dec. 14, 2009, file photo, Frank Knight, 101, of Yarmouth, stands in front of an elm tree known as "Herbie" in Yarmouth. Knight took care of the tree for about 50 years while working as the ...

The aggressive Redbay Ambrosia beetle is no bigger than Abraham Lincoln’s nose on a penny, but over the last two decades, the invasive insect has managed to kill more than 500 million trees in North ...

EGREMONT — Berkshire County's most photographed tree got a special injection Friday morning to protect it from Dutch elm disease. Early Friday, before the daily heat could set in, a crew from ...