Timing advice for topping indeterminate tomatoes at the end of this summer/season
First year growing indeterminate tomatoes, as well as first year growing tomatoes in a raised garden bed. Both big successes! I'm wondering, though, if there are some rough guidelines people use here, in Minneapolis specifically, but Minnesota more broadly, and determining when it's time to top off their indeterminate tomatoes to stop more height, and to focus the plants energies on producing what fruits they still have left. I know it's a crapshoot when the first frost will happen, and it seems like we are skewing a little bit later every year maybe? But I didn't know if some people had a specific date that they always use, like the middle of August or the end of August, etc.
Thanks for any advice!