Went to a new park today. Found 8 wheats all but two are before 1919. 2 Buffalo's and a rusty knife. Almost all the wheat's were 6" plus and came out of the ground green. Ive had them come out like this before but never this many. Some were so green I thought they were Indian heads. I'm not sure whats causes them to turn that way but it was another good day with the Etrac.