when we did, it was mostly around holidays, or long weekends. we would often go in august, when corn was ready and we had huge corn boil and we would get back home with bags of corn. i loved it as i love corn on the cob!
occasionally, we would end up going a bit later. if the time for the corn boil was over, then it was the potato time. since i never lived on a farm myself, it was always an adventure to see the big machinery that was used for harvest. when i was a bit older (possibly a teen), i would be invited to help with the 