On engines with belt-driven cooling fans, a fan clutch is often used to save energy and reduce noise. The fan clutch disengages slows or disengages the engine's cooling fan when extra cooling isn't needed. The fan pulls air through the radiator and air conditioning condenser when the vehicle isn't moving fast enough to provide adequate airflow for cooling.
St Augustine grass will go dormant when the soil temperatures fall below 55 degrees. If the soil remains warmer than 60 degrees all year, the grass will stay green. It will, however, slow in growth as the soil drops in temperature. Disadvantages of St Augustine grass. One of the disadvantages of St Augustine grass is its poor wear tolerance.
Sod. You can lay sod any time of the year, although it's best to plant according to the active growing period of the grass species -- mid-to-late spring for warm-season grasses and early spring or early fall for cool-season grasses -- and to avoid laying sod in exceptionally hot and cold temperatures.arm-and Cool-Season Grass Seed. It's too late to plant warm-season grass species when the risk of frost is less than 60 days away in warm climates and less than 90 days away in cooler climates.