How can conifers that are used for example as Christmas trees keep their green needles over the boreal winter when most trees shed their leaves? Science has not provided a good answer to this question ...

Witch's brooms are compact, rounded collections of short needles and small cones. They can sometimes make up the entire leafy crown of a tree. Staff at North Carolina State University are asking for ...

We may receive a commission on purchases made from links. Dealing with a plethora of pine needles from your conifer trees? Despite being evergreens, pine trees eventually shed some of their needles — ...

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 ...

At Christmas, there are so many choices and decisions to be made regarding the tree: Real or artificial? Cut or balled? Long or short needles? And more. Without information, you may not be satisfied ...

It’s normal for deciduous trees and shrubs to drop their leaves in autumn. Many homeowners don’t realize that it’s also normal for evergreens, such as pines, to drop some needles. “Needles don’t last ...