corn field

so 5 out of 8 of my female outdoor plants were jacked right before i had to leave for college, around aug 20, i took the other 3 and since i didnt have much time to find a great spot i stuck them deep into a corn field. i have been at school and have not seen them since that night. they were just begninning to show signs of budding around july 30. my biggest concern is the date of the corn harvest. they are located in pennsylvania around the 40 degree latitude line. does anybody have a vague idea of when corn is harvested in this area? my plan is to go get them on oct 11, i have no way of knowing whether or not they are ready. any advice? i know this is vague im just trying to get some 2nd opinions.

In New Jersey i believe most if not all of the corn is harvested already. You are to late I believe

yeah youre couple states farther north and east than me. so your corn will be harvested first
our corn still hasnt been harvested yet, but im sure it will be in the next week probly the end of this week

so, id get them out of there if i were you