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 ...

Tom Oder is a writer, editor, and communication expert who specializes in sustainability and the environment with a sweet spot for urban agriculture. John Manion is a guy who know his plants. That's ...

Despite the fact that we describe live oaks as evergreen, they drop their leaves every year in late February or early March. I guess we still call them evergreens because the transition happens so ...

One of the easiest ways to tell a red oak from a white oak is by looking at the leaves. Red oak leaves have pointed lobes and white oak leaves have rounded ones. (Adobe Stock / Field & Stream) Leaves ...

Q: What are these red fluffy balls that are ALL OVER my oak trees and raining down on my house and patio? Are they doing to hurt my trees? A: They are insects, but they are no harm to you or your oak ...

Q. I have a large number of oak leaves that have accumulated in my yard after this last round of storms. I would like to compost them but have been told they are toxic to microorganisms and they ...