Chart of the week: visualizing overseeding windows

Drop seed too early, and you'll be dealing with increased seedling mortality along with a vigorous warm-season base competing for resources like light, water, and nutrients. Drop seed too late and the temperatures will be low and getting lower day by day. There won't be enough time for the overseed to establish.

This chart shows the optimum overseeding dates for the past three years at Augusta, Myrtle Beach, and La Quinta. The optimum dates are identified by finding the date…