Crews finished up the last of the tree pruning activity in Okotoks last week, giving way to the annual elm pruning ban. The ...

An environmental group in northern Ontario is working to preserve black ash trees from the emerald ash borer, an invasive ...

Newborn caterpillars protect leaf-tip homes with buzzing and drumming signals. These vibrations scare off rivals and help avoid fights.

EMERALD ASH BORER The emerald ash borer (Agrilus planipennis) is a destructive, invasive wood‐boring pest of ash trees ...