I have a large, mature water oak growing in my yard that has me concerned. There is a large cavity in the trunk. I’m not sure if I should fill this up with something like concrete. Also, I have ...

Greek researchers have developed models to accurately predict when olive and oak pollen will cause seasonal allergies.

The pedunculate oaks typical of Leipzig's floodplain forest and other German oak forests are struggling to regenerate in the understorey due to a lack of light. One reason for this is the absence of ...