For our tall fescue, there's really no such thing as "too late" in the fall
or winter for seeding. Especially if you have nothing. December is far
better than spring seeding. There's no comparison. The chart mentioned is
the optimum time and that will vary if you are planting under a canopy,
cause mid October seeding under trees will put your new seedings at risk
during the Nov raking.
--
Baine