Tall fescue or Kentucky blue grass lawns have a great response to fall fertilization. If a homeowner could only fertilize once a year, now is the time, with preference to quick-release fertilizer.
As these grasses enter their fall growth cycle, with shorter days and cool nights. Cool-season grasses naturally thicken up in the fall by forming new shoots at the base of existing plants. This is called tillering. Bluegrass spreads by underground stems called rhizomes. Consequently, September is the most important time to fertilize these grasses.
