While wandering middle Alaska this summer, I noticed orange spruce trees along the entire length of the Denali Highway, from Paxson to Cantwell. In what looked like a dendrological case of frostbite, ...

While wandering middle Alaska this summer, I noticed orange spruce trees along the entire length of the Denali Highway, from Paxson to Cantwell. In what looked like a dendrological case of frostbite, ...

FRANKTOWN, Colo. — A series of weather extremes damaged numerous species of evergreen trees including some ponderosa pines and spruce trees in Douglas and Elbert Counties, according to the Colorado ...

While wandering middle Alaska this summer, I noticed orange spruce trees along the entire length of the Denali Highway, from Paxson to Cantwell. In what looked like a dendrological case of frostbite, ...

A white spruce tree infected by spruce needle rust fungus, a cosmetic disease that does not kill the tree. (Photo by Ned Rozell) While wandering middle Alaska this summer, I noticed orange spruce ...