In southern Italy, two varieties of olive trees, some infected with a disease called Xylella fastidiosa, a bacteria carried from tree to tree by a little bug, and some resisting the infection CHARLES ...

Dothistroma needle blight (DNB) is a serious foliar disease impacting a wide range of pine species throughout the globe. The disease is principally associated with the fungal pathogens Dothistroma ...

A fast-track method of breeding disease-resistant ash trees has been developed by researchers leading efforts to conserve the ...

Invasive tree pathogen that causes red oaks to ‘bleed’ found for first time in Minnesota Researchers at the University of Minnesota found the “sudden oak death” pathogen at a Hennepin County nursery.

Each year, nearly 30 million Americans purchase a real tree for the holidays. Growing the perfect Christmas tree takes about seven years, during which farmers need to keep insects, fungal pathogens ...

Trees are important to the environmental health of cities through their capacity to improve air quality, provide cooling via shade and transpiration, and foster natural beauty. New research in ...

The distinctive scent of fir trees is appealing to consumers and may also help repel pests and deer. UC Davis biologists are taking part in a new project to study how trees make these scents and to ...