Northern Gardeners - When do you "top" your tomatoes?
I am in zone 4 WI. My tomatoes are all over 8 ft tall. Some have been producing well, some not so much. I am wondering at what point I should think about topping off my plants to direct the energy to the already formed tomatoes. If the flower to fruit timing is the same as it is at the beginning of the cycle, I would think that now is the time, but I have heard that as the weather cools off they move along a little faster.