wigmap

I am not sure about the one year on and off again but I do know this. In my area we have probably 98% northern red oaks. When they have acorns they are typically very large. The fall of 2002, and 2003 we have not had any acorns from any species. I read the DNR mast reoport for my state. In 2002 the culprit was a late hard frost in May. I think several areas had this. In the spring of 2003 it was too much rain. According to the DNR the oaks were not able to flower because of the constant rain. Many counties in my state set monthly rainfall totals in several different months during 2003. The rain is great to keep down gypsy moths but apparantly over abundant rain can hinder acorn production.