We love the vibrant colors of maple trees in the fall. These deciduous beauties bring not only great color but also a recognizable leaf shape and (our favorite) whirlybird seeds that helicopter their ...

Q. My maple tree has black spots on the leaves that just appeared recently. Should I be concerned about this? What should I do? A. Sometimes wet conditions earlier in the season can cause problems ...

"They clearly don’t care or don’t know." Homeowner met with pleas to undo landscaping mistake after brutal discovery: 'They ...

There are lots of brown spots on the leaves of my sugar maple this spring. I have never noticed it being this bad in past years. What is this and what can I do for my tree? Your description of the ...

Since mid-July, I’ve noticed something strange in several maple trees I’ve driven by: their leaves are starting to show fall color! Sometimes it’s just the tips of the branches turning red or yellow; ...

Insect galls on pecan leaves will damage but not kill the tree. Shade trees are extremely important to most landscapes, providing aesthetic and functional design elements. Landscapes would be void of ...

The list of diseases attacking trees in the Pacific Northwest grows every year. A pathogen new to Pierce County brings an added concern: It can injure people. A research project using citizen ...

There are lots of unique species of maple trees that can provide many years of shade. With so many options, there's a perfect ...

“Trees, our largest and most long-lived plants, shut down food production in preparation for the winter drought. But the hardwoods don’t quietly sulk into dormancy like skunks and groundhogs; they ...

The list of diseases attacking trees in the Pacific Northwest grows every year. A pathogen new to Western Washington brings an added concern: It can injure people. A research project using citizen ...

It may be cold, but spring is just over the horizon. You may have gardening questions. For answers, turn to Ask an Expert, an online question-and-answer tool from Oregon State University’s Extension ...