Invasive white pine blister rust is killing native evergreens, but a Sheboygan horticulturist at Bookworm Gardens says simple pruning can save infected trees.

Could a fungus found in the Torrey Pines State Natural Reserve be deadly for Torrey pine trees in La Jolla Shores’ Kellogg Park? Representatives of California State Parks have noticed that trees at ...

Forest pathologists take a much different view. ‘‘A lot of trees are going to be killed,'' said John Schwandt, national whitebark pine coordinator for the Forest Service. ‘‘A lot of the seeds that ...

The genome of the fungus that helps mountain pine beetles infect and kill lodgepole pines has been decoded in a University of British Columbia study. Also known as blue stain fungus for the stain it ...

CONCORD — White pine trees in New Hampshire have been dropping needles, but that is to be expected after last year’s rainy late spring and summer, according to the N.H. Forest Health Bureau. For the ...

LITTLE ROCK (KATV) — The investigation into a mysterious ailment killing Arkansas pine trees has yielded some answers. The increasing occurrences of the strange affliction in recent months have ...

Some whitebarks have genetic resistance to blister rust. By identifying those trees and cultivating their seeds, researchers hope to grow new rust-resistant forests in the future. Whitebarks, however, ...