Source: The Castaic, CA weather data displayed above is derived from the NOAA (National Oceanic and Atmospheric). Air quality and pollution data is derived from the EPA (United States Environmental Protection Agency). Air quality and pollution levels measured in a particular area may not be representative of the entire county.
Plant fescues when fall temperature reach about 75 F. The next best time to plant fescue seeds is when rising temperatures in spring reach 60 F. Summer isn't a good time to plant fescue lawns, because fescue grass tends to go dormant during periods of high temperature.
Germination Time Frame. Fescue seeds takes approximately 14 to 21 days to germinate. Soil temperature, outdoor temperature, oxygen soil levels and water all affect how quickly the seeds germinate.Cover the seeds lightly with soil when spread and lightly compact the soil to help ensure germination occurs.escue grass seeds germinate best when the soil temperature is 50 to 65 degrees Fahrenheit. The daytime air temperature should be between 60 to 75 degrees Fahrenheit.