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.
Coarse fescues can grow as wide as 5/8, while fine fescues can be less than 1/16. Two Types of Full Sun Tall Fescue. The first group is simply referred to as coarse fescue or field-type tall fescue. These are primarily bred as pasture grass, but can be used in lawns.