Giant pine scale is an exotic pest that kills pine trees and can be spread by humans. So far, it has felled nearly 1,400 trees in Adelaide's north-eastern suburbs, with the state's forestry industry ...

Researchers climbed General Sherman, the world's largest tree, for the first time ever and gave it a clean bill of health. The researchers were looking for bark beetles, which have become more ...

It looks like lice on your trees. Unprecedented infestations of pine needle scale — a native insect that eats the needles of pine, spruce and fir trees — are on the rise on private lands in the High ...