I live in Southern Illinois and have silver maples on my property that are large enough to tap and have just tapped one (Feb 25 2017) Our weather has been warm this season even in 70s which is unusual for this area. However has dropped back down the last few days to below 32 at night and in 40s during day which I thought was ideal for tapping maple trees but I cannot get any flow whatsoever out of my tree. I have drilled the hole up 3 feet from bottom of tree at an slight upward angel about 2 inches deep but nada. Dry hole tried another hole same thing . Any suggestions and is it possible that the early 70s this year messed this year up as far as getting any sap from the tree? Thanks for any help
Bob H
