There's no single magic number, but there is a right approach. The goal in the foothills is deep, infrequent watering that soaks the root zone — not quick daily sprinkles that evaporate off the rocks and train roots to stay shallow.
The golden rule: deep and infrequent
Water fewer days per week, but longer each time. Deep watering pushes roots down where the soil stays cooler and moister, so your lawn handles our foothill heat far better. Frequent shallow watering does the opposite — it keeps roots at the surface where they bake.
A simple summer starting point
- Spray heads (typical lawns): about 3 days a week in peak summer, roughly 10–15 minutes per zone — but split into two shorter cycles about an hour apart so the water soaks in instead of running off.
- Rotor heads (bigger lots): the same days, but longer run times — rotors apply water slowly, so they often need 25–40 minutes per zone.
- Drip (beds, shrubs & trees): 2–3 days a week, longer runs, since drip applies water very slowly right at the roots.
- On a well: stagger start times so zones don't all fight the pump at once, and give the pump a break between cycles. More on well watering →
Why "cycle and soak" matters here: Decomposed-granite and clay foothill soils don't all absorb water at the same rate, and slopes shed it fast. If you run one long cycle, the last several minutes just run downhill. Splitting it into two shorter cycles with a soak break lets each pass sink in — same water, far less waste.
Water before dawn
Set your start time for the early morning — roughly 3 to 6 a.m. Midday watering loses a big share to evaporation and our afternoon wind, and evening watering leaves grass wet overnight, which invites fungus. Early morning gives the lawn a full drink before the heat hits.
Adjust with the seasons
Dial it back in spring and fall, and cut way down (or off) in our wetter winter months. Auburn sits higher than the valley, so spring can stay cool and damp longer — don't let a factory schedule water a lawn that doesn't need it. A smart controller makes these adjustments automatically.
The catch: Even a perfect schedule can't fix broken hardware. If some spots stay brown no matter what, you likely have clogged heads, a bad valve, or a pressure issue — not a scheduling problem. That's a quick
sprinkler repair call, and we'll dial in the schedule while we're there.