06/01/2026
Watering Your Lawn: How Much Water Does Your Grass Need?
A healthy, green lawn starts with proper watering. While every lawn is different, most turfgrass requires about 1.5 inches of water per week once active growth begins. Factors such as soil type, thatch thickness, sun exposure, and weather conditions may require adjustments to your watering schedule.
Seasonal Watering Guidelines
Spring Watering
As temperatures begin to warm and grass starts actively growing, begin watering 1–2 days per week. If spring rainfall is plentiful, you may be able to reduce or eliminate supplemental watering.
Late Spring and Summer Watering
During hotter months, increase watering to up to 3 days per week, depending on rainfall and temperatures. If there is little or no rain, make sure your lawn receives at least 1.5 inches of water each week.
Allow 1–2 days between watering cycles whenever possible. This gives the top layer of soil time to dry slightly, helping prevent mold, fungal diseases, and other moisture-related issues. Less frequent, deeper watering also encourages stronger, deeper root growth.
Fall Watering
As temperatures cool in the fall, gradually reduce watering back to 1–2 days per week. During periods of frequent rainfall, turn your irrigation system off to avoid keeping the soil saturated for extended periods.
What Time of Day Should You Water?
The best time to water your lawn is early in the morning.
Morning watering allows moisture to soak into the soil while giving grass blades time to dry throughout the day. Watering at night is not recommended because prolonged moisture on the grass can increase the risk of mold, fungus, and disease.
How Long Should You Water?
A good goal is to apply approximately ½ inch of water during each watering day.
For most sprinkler systems, this typically means running each zone for 45 minutes to 1 hour, depending on the sprinkler nozzle output and gallons-per-minute (GPM) rating.
How to Measure Your Water Output
Not sure how much water your sprinkler system is applying?
A simple test is to place several empty tuna cans around your lawn before running your sprinklers. Since a tuna can is approximately 1 inch deep, it provides an easy way to measure water accumulation.
Run your irrigation system for about 45 minutes and check the water level in each can. This will help you determine whether your lawn is receiving enough water and whether your sprinkler coverage is even.
For more precise measurements, Oasis Lawn & Pest also offers rain gauges.
Signs Your Lawn Needs More Water
Pay attention to these common signs of drought stress:
Grass develops a dull, dark green, gray, or bluish color.
Areas of the lawn begin to feel dry or "crunchy" when walked on.
Footprints remain visible and the grass does not spring back quickly after being stepped on.
These symptoms indicate that your lawn may need additional moisture.
What Should You Do If You Notice These Symptoms?
If your lawn begins showing signs of drought stress:
Add an extra watering day or two to your weekly schedule.
Inspect your sprinkler system for coverage issues and make adjustments if certain areas are drying out faster than others.
Avoid allowing drought stress to occur repeatedly during the heat of summer.
Keep Grass Taller During Hot Weather
During periods of high heat—especially when temperatures exceed 80°F—maintain your mowing height at approximately 3.5 inches.
Taller grass shades the soil, reduces moisture loss, and helps protect your lawn from heat stress.
Final Thoughts
Consistent watering is one of the most important factors in maintaining a healthy lawn. By providing the right amount of water, watering at the proper time of day, and watching for signs of drought stress, you can promote deeper roots, reduce disease pressure, and keep your lawn looking its best throughout the growing season.
If you have questions about lawn care, irrigation, or maintaining a healthy landscape, contact Oasis Lawn & Pest. We're here to help your lawn thrive all season long.
