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.
Â· If the lawn is covered 50% or less with healthy fescue, use a verticutter (sometimes called a dethatcher). Adjust the verticutter blades to just touch the top of the soil. Â· If the lawn is covered 50% or more with healthy fescue, use a core aerator. Stop when you have 10 or more aerator holes per square foot. Â· Just before seeding, lower your mower one notch below your normal mowing height and mow the lawn.