big oak tree losing its 'tips'?
We have a very tall mature oak tree in our yard. For a few weeks now, what seems to be the "tips" of the branches are falling off - a small piece of branch with about 10-15 still-green (not brown) leaves attached. I've never noticed this happening in years past, unless there was a huge windstorm or something. But this has been going on with or without wind and there's quite an abundance of these "tips". Does anyone know what this means or have any experience with it?