The Emerald Ash Borer, an invasive species of bark beetle that was discovered in Colorado in 2013 and has been expanding through the state, has the potential to damage the Colorado landscape. And ...

The City of Regina has had seven confirmed cases of Dutch elm disease this week, which brings the total up to 17 this season, ...

Dutch elm disease is on the rise, with forestry crews set to remove seven infected trees in Regina that recently tested ...

Regina is battling an early surge of Dutch elm disease, with 17 infected trees confirmed so far this year. Acting parks ...

Some community members in Wolseley are trying to stop the fatal spread of Dutch elm disease by inoculating all of the healthy ...

morgan23 / Getty Images A fully grown tree may lose several hundred gallons of water through its leaves on a hot, dry day. The same tree will lose nearly no water on wet, cold, winter days, so ...

All tree leaves exhibit margins—the blade-like edges of the leaves—that are either serrated or smooth. Leaf margins can be finely classified based on at least a dozen unique characteristics.

Darling-58 sprouts, a transgenic American chestnut created by ESF researchers, grow in a nutrient solution. Darling 54, a ...

Ash trees are fighting back against a disease that has ravaged the British countryside, new scientific evidence shows. When ...

Britain's trees are evolving resistance to the deadly ash dieback fungus, scientists have revealed. The disease has wrought ...

Research suggests new generation of young ash trees showing greater resistance to ash dieback fungus than adult trees.

A native, century-old elm tree near the Christie Pits neighbourhood – and one of the largest in Toronto – was recently cut down.