Watering

Irrigation is one of the most common places where home lawns get over-managed. Watering on a fixed schedule — same days, same duration, every week — ignores the fact that a lawn's actual water needs change with temperature, humidity, wind, and sunlight. The same schedule that's adequate in a cool cloudy week is under-watering during a July heat wave and over-watering in September.

Overwatering pushes roots shallow, starves the soil of oxygen between cycles, and creates humid conditions in the canopy that favor fungal disease. Consistent underwatering through summer heat causes stress, browning, and increased vulnerability even in drought-tolerant species. Neither is what you're trying to do when you set a schedule once and forget it.

The right approach is to match run-time to evapotranspiration (ET): the amount of water the turf canopy and soil surface are losing to heat and atmospheric demand. ET is weather-driven and changes day to day. Calculating it correctly requires knowing your sprinkler system's precipitation rate — how many inches per hour it delivers across the coverage area — and the actual ET demand for your location and conditions.

The tools here will give you the run-time to replace what your lawn actually lost — a number tied to real weather data, not a fixed timer setting.