Your local weather station can provide you with a good estimate on when to start your irrigation system. If the temperature is expected to be above 90 degrees, it is best to set your sprinkler system as soon as possible. If the temperature is predicted below 90 degrees, then wait until later in the day or evening before starting your system.
How many sprinklers do I need?
A single valve controls each spray head and has a maximum of four heads per valve. For this reason there are 4 valves on most systems and up to 8 heads on larger systems if necessary for extra coverage areas such as landscaping beds, portable shelters etc…