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 ...

Question for Dan Gill: There have been tons of leaves falling from the live oak in the yard of the house I just moved into. What gives? I thought live oaks were evergreen. — Elizabeth Naquin Answer: ...

Gardening season is underway, and you may have questions. To ask one, simply go to the OSU Extension website, type it in and include the county where you live. A photo is very helpful. Q: Our oak tree ...