Botanists define Mast as the fruit of forest trees, particularly oaks. A mast year is one in which acorns are particularly abundant.
On this first day of fall, the red oaks are dropping acorns everywhere, but the white oaks are not - thus the title of today's post.
The white oaks have had a couple of strange years in a row. I noted last year that the white oaks, which typically have huge acorns, had dropped early and the aborted acorns were tiny. This year, although the trees appear to be healthy, I don't see any acorns at all.