From the category archives:

Pests & Pathogens

Lodgepole pines are disappearing from the west - Video

December 4, 2008

Five major threats to eastern North American forests

November 26, 2008

An endophytic tree fungus produces biodiesel

November 4, 2008

Sudden oak death threatens ancient trees in England

November 3, 2008

Emerald ash borer found in tree from nursery - Wisconsin

October 22, 2008