My lawn is in need of much repair, beginning with aeration. We have numerous kinds of grass - Bermuda, fescues, and yes, even crabgrass!!!! Is it too late in the season to aerate in Central North Carolina (Triangle Area)? I've read that you should do this early enough that the lawn will still have six weeks to grow. I haven't lived here long enough to know how long the growing season will generally last. Thanks for the help.