If you have cherry or plum trees, now's a good time to check for a disease called black knot fungus. The fungus can go unnoticed with summer foliage but is apparent when trees are winter-bare. Also ...

European canker, caused by the fungal pathogen Neonectria ditissima, presents a significant challenge to apple production across temperate regions. The disease manifests as cankers on trunks and ...

Gardeners, this week we are discussing Asian Citrus Greening and Citrus Canker and how we can recognize each of the two citrus diseases. There are numerous plant diseases that may attack citrus trees, ...

Fungal pathogens that cause die-back in grape, avocado, citrus, nut and other crops has found a new host and is infecting conifer trees causing Pine Ghost Canker in urban forest areas of Southern ...

It is so disconcerting to see a specimen tree going into decline. One of the prized oak trees in my yard appears to be declining, so I can relate to your concerns. Your description suggests that your ...

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 ...

HARRISBURG, PA. -- Thousand Cankers Disease has been detected for the first time in Pennsylvania, and a quarantine restricting the movement of wood from Bucks County and other states known to have the ...

This tree is infected with the fungal pathogen that causes Pine Ghost Canker, which can be fatal for trees. (Akif Eskalen, UC Davis) Fungal pathogens that cause die-back in grape, avocado, citrus, nut ...

Losing a tree can be stressful for homeowners, financially and emotionally. For all the years it takes a tree to mature, it is devastating for one to die rapidly because of disease. This is true with ...

Evidence of hypoxylon canker on oak trees can appear black and crusty, similar to dried tar. This stage of the fungus usually appears after the tree has been dead for several months. These black ...

LITTLE ROCK — The sound of raindrops on tree leaves and the little greenish-brown pellets on the sidewalk are related to a common summertime phenomenon — leaf-hungry caterpillars. “Leaf-devouring ...