To prevent tar spot, mostly you just have to hope that the weather this coming spring is not wet enough for the fungus to ...

If you notice bare branches on your maple tree this spring or observe a sudden leaf drop, your tree may have an insect problem and the maple petiole borer may be the culprit. Although trees drop ...

Q: I need your advice to save our beautiful maple that has grown quickly from the small twig our son received less than 10 years ago. For the past three years, I have noticed small red "tumors" ...

One of my favorite things about sharing a love for gardening with my dad is our passing on of notes and lessons. I'll often turn to him for some advice and he likewise calls on me if something isn't ...

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; ...

Fall comes early at my house with premature leaf drop on most of my maple trees now an annual occurrence. This year, however, has been particularly severe with leaves on my Norway Maples shriveling up ...

Whether you grow a deep crimson 'Bloodgood' specimen or perhaps you have an acid-green 'Emerald Lace' in the yard, there's nothing quite like the vivid canopies of healthy Japanese maple trees. As a ...

Recently I checked my answering machine to find this message "What is happening to all the maples in Sioux City? They are yellow and little crumbs of sawdust are on the patio furniture." My initial ...

Question: My hackberry trees are dropping leaves for no apparent reason. The leaves look fine, no bugs or mold spots or discoloration of any kind. Do you have any idea what might be causing the leaf ...

Gardening season is wrapping up, but you may still have questions. For answers, turn to Ask an Expert, an online question-and-answer tool from Oregon State University’s Extension Service. OSU ...

Autumn is when Japanese maples look their best, but disease can fester at this time of year so gardeners need to do an easy ...

Now that we’ve had six weeks’ exposure to hot, dry conditions, that’s when the challenging questions start rolling out. (Like an avalanche.) I’ve assembled some of the most common ones in the hopes ...