Do you have a mature pine tree with bunches of brown needles? It may be suffering from a fungal disease called diplodia tip blight. “Diplodia has become more common due to environmental stress and ...

Purdue Landscape Report: Early June, we received a white pine sample at the Purdue University Plant and Pest Diagnostic Lab that showed early season needle loss lower in the tree canopy (Figure 1, 2).

Evergreen trees and shrubs often alarm homeowners by losing needles in autumn. There’s usually no need for concern. “It’s part of the regular life cycle of these plants for some needles to turn yellow ...

For months, foresters and researchers have been investigating reports of ailing pine trees in Arkansas. New diagnostic lab results help tell part of the story, but researchers are continuing to ...

Many of us look forward to fall when leaf colors change to yellows, reds, purples and oranges, creating a beautiful scene along with enjoyable cooler temperatures. But what we don’t expect to see are ...

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 ...

We’ve had a number of mysterious pine tree species in this column, and here is another. There’s always a new pine species to learn about: after all, there are about 100 species worldwide. This one is ...