![Tall fescue research plots on the University of Georgia campus in Griffin, Ga.](https://secure.caes.uga.edu/news/multimedia/images/696/tallfescuelr.jpg)
Interseed Fescue
September and October are the perfect months to interseed tall fescue lawns. Tall fescue is a bunch-type grass with no runners to help it spread. The grass may start to thin by the end of summer.