Trees can be expensive and are valuable plants we need to avoid injuring. Wounds are openings for decay organisms and trees expend energy for wound sealing, setting them up for other issues. During ...

Don't stress if you have a tree that's not looking its best in the bark department. You can save a tree with damaged bark by first assessing the type of damage. Once you know the severity, you have a ...

Question for Dan Gill: Recently I had a large Shumard oak tree planted by a local nursery. In the process of planting, they damaged a small section (five inches by six inches) of the bark, about a ...

Q: Should I evict the squirrel who lives in the hole in my golden rain tree’s trunk? There is some rotting on the cut stump. Should it be filled with concrete, or is there a better way to repair it? A ...

When fall’s cold nights kill the flowers and cause so many of our trees and shrubs to drop their leaves, the bareness shines our focus on what’s left – for one thing, tree trunks. Trunks and their ...

Howard Garrett I usually do not use pruning paint of any kind on my trees. Research by arborists has shown that pruning paint and wound dressings give little help and can be actually be harmful to the ...

Winter is on its way, but gardening season is far from over. We’re still getting plenty of questions to Ask an Expert, an online question-and-answer tool from Oregon State University’s Extension ...