Trees are emotive, but a political obsession with planting trees is getting in the way of proper maintenance of our ancient ...

Swaths of Allegheny National Forest in northwestern Pennsylvania could be on the chopping block as the federal government ...

In a culture obsessed with competition, it comes as no surprise that even our trees have been put to the test. In honor of Earth Month, celebrated every April, this series documents a handful of ...

If you're thinking of adding a street tree out front, Penn State urban forester Vincent Cotrone has some recommendations.

Moss or lichen growing on your trees isn't necessarily a bad thing, but you can choose to remove them physically or by ...

Sometimes we get sidetracked with bunnies and baskets at this time of year. But we can get beyond those to see the beauty and ...

Native live oaks may provide hardy shade during the long hot summer ahead, but they cause a lot of misery before then. Live oak trees explode with lime green pollen from March through early May, ...

Q: How can you say that ball moss does not have a negative impact on live oak trees when it seems to replace the leaves on ...