I live in middle tenn. and it is hot in the summer. Give me the best way to keep weeds out of the lawn during spring,summer and fall. Grassy and broadleaf. What is the best granule product to use in the fall for weeds (broadleaf) over the winter? When do you put it down if you aerate and seed in the fall that will still allow seed to come up in the spring What is the best program if you seed in the fall for weed control in the lawn year round that will still let seed germinate!