OK I've gone threw all the posts n got some good info but still have some questions. I live in northern NY bout 30 miles north of fort drum or Watertown.I'd like to know when I should start looking. I have lots of elm,ash ,cherry,red oak. Some maple ,poplar,white pine. I have some small ridges n a couple nobs. Now most of it is grassed by beef cows but don't go into pasture for at least another 3 weeks or longer really depends on how the grass grows. I don't know if this helps or makes it worse. Any info would b greatly appreciated. Thxs