Jumping Jehoshaphat! The ground is alive! Or so it seems when hundreds of tiny round spheres the size of a pin head are hopping around on the sidewalk. This spring there are plenty of these curious ...

Q • I have noticed a lot of weird balls growing on my oak tree, and it is starting to get a lot of dead branches. What is happening to my tree, and how can I make it healthy again? A • The structures ...

Twenty-five years ago, when rows of young pin oaks were planted along Man o' War Boulevard near the entrance to Blue Grass Airport, the idea was that columns of stately trees would someday welcome ...

Many coast live oak (Quercus agrifolia) trees are showing unusual browning in their canopies in the last month or two. If you look carefully, you may see small, crescent-shaped galls forming on the ...

*Refers to the latest 2 years of stltoday.com stories. Cancel anytime. Q • There are these large, round nodules on all the branches on my front yard oak tree. What is this disease and what should I do ...

This past winter was above-average in temperature. Rarely, if at all, did we have any of those bone-chilling days or nights. As a result of the mild winter, people were asking if we would see more ...

We moved last year and we have a new place with more trees! Trees are an important feature for us. Our new location has two and a half acres. We have five maples and 12 red oaks! We enjoy walking ...

Earlier this month my colleague, LyAnn Graff, brought in an interesting looking fuzz ball surrounding a thin leafy branch of a burr oak tree. It was about the size of a golf ball, but with red-tipped ...

When you look up into the bare branches of some oak trees at this time of year, you can see ball-shaped growths hanging there, looking almost like nature’s Christmas ornaments. These are galls. A gall ...

The horned oak gall forms on twigs of Quercus palustris Muench. and is initiated when the wasp Callirhytis cornigera O.S. oviposits into the periderm or cortex of the twigs. Injury to phellogen as a ...