I had a new irrigation system installed last fall during our lawn renovation. Since we were trying to get seed started I programmed the timer to run every day. Now (obviously the lawn is established) I know it does not need daily watering, but how often and for how long should each zone run? The system is composed of -15 Hunter I-20 rotors -12 weathermatic LX sprays -irritrol RD-900 9 zone controller -irritrol 2400 valves -rain brain 420gls rain sensor The system only covers the front yard (approx 15,000 ft2). there are 5 zones. 1st zone is 6 rotors, second zone is 6 rotors. These two zones cover the majority of the front yard. The third zone is 3 rotors for the area beside the house. Zone 4 and 5 are six weathermatic sprays each for the area between the driveway and neighbors yard. How long and how many days per week should I program the controller for? If it matters grass is turf type tall fescue blend from Lesco.