I've got two. Biggest being a south facing hill, roughly 9000' long and 140' in elevation from top to bottom, facing south, field at bottom so no shade, lots of huge ash trees and poplar, bunch of little elm at the bottom. I've checked it for 10 years and never found more than a handful of grays. I ch ck it several times in the spring and just don't find much. Know I'm the only one that hunts that hill. The other is a doozy. Kinda a low area but warms up quick. There are 6 apple trees, easily 30" dbh, and 2 huge American elms, both 30" trees and died 3 years ago. Basically 6 old apple trees and 2 elms in a field and I've never found a mushroom once. I've been looking basically daily through mushroom season and not found anything. I've got a number of elms I've checked and not found any around. Odd. Anyone else have any oddities?