I live on a two acre lot that is half covered with 100 year old bur oaks. For 13 years come August we are dodging falling acorns. Last year was a bumper crop and this spring for the first time ever, every dang one of them sprouted where they fell!! We rake the yard of them and leave the rest for the squirrels as a rule. Where I dumped the wheel barrels full I now have a mound of bur oak seedlings. I have never seen anything like this. Fast forward to August just past and not a one acorn fell. There are no acorns on any of our trees. Has anyone ever heard of this?! We have had wet wet springs and dry summers. Most of the oaks get watered because I have an extensive shade garden under them. Is this some sort of normal process? Why did so many acorns sprout this year and never before? Why are there no acorns this year? So many odd happenings!!