When is the Best Time to Water Grass? Expert Tips for A Greener Lawn

When is the Best Time to Water Grass? Expert Tips for A Greener Lawn - My Store

Knowing the best time to water your lawn can make a significant difference in its overall health and appearance. This article will explore the best watering times for grass by considering influential factors like grass type, climate, soil conditions, and proper irrigation techniques. Following the recommendations provided can help you create a lush, green lawn that thrives with minimal water waste.

When Is the Best Time to Water Lawn?

The ideal time to water your lawn is early morning, before 10 am.

Watering during this time allows the grass blades to dry quickly under the sunlight, minimizing the risk of fungal growth. Conversely, watering in the evening or at night can create a damp environment that promotes the development of diseases. Therefore, scheduling your irrigation routine in the morning is crucial for maintaining an overall healthy lawn.

Additionally, using a smart irrigation controller can further enhance your watering routine by automatically adjusting the watering schedule based on weather conditions, ensuring that your lawn receives the right amount of water at the optimal time.

Key Factors to Consider

Grass Type

Close up photograph of grass blades covered in icy dew drops. The green blades of grass are dotted with frozen water droplets that have crystallized on the tips, reflecting light.

There are two main grass type categories - warm season and cool season. Each has distinct watering needs based on growth habits and climate preferences.

Warm-Season Grass

Warm-season grasses such as Bermuda, Zoysia, St. Augustine's, and Centipede flourish in hot, humid climates. They are actively growing during the summer months.

These grasses need about 1-1.5 inches of water weekly from irrigation during the peak summer growing season. Watering 2-3 times a week in the early morning is best. Reduce frequency as temperatures cool.

Cool-season Grass

Cool-season grasses like Ryegrass, Fescue, and Bluegrass thrive in cooler northern climates. They experience peak growth during spring and fall.

These grasses require about 1 inch of water weekly during active growing seasons. Watering 2-3 times a week in the early morning is ideal. Adjust watering with seasonal temperature fluctuations.


In arid climates where water is scarce and temperatures are high, it is important to adjust your watering practices accordingly. Watering in the early morning or late evening is recommended to avoid excessive evaporation. This allows the water to penetrate the soil and reach the grassroots effectively. Additionally, deep and infrequent watering is essential to encourage deep root growth and enhance the drought tolerance of your lawn.

In humid climates, where moisture levels are naturally higher, watering in the early morning is still beneficial. This gives the grass blades ample time to dry throughout the day, reducing the risk of fungal diseases. However, because of the increased humidity, it is important to monitor your lawn’s moisture levels and avoid overwatering, which can lead to issues such as root rot or the development of shallow roots.

For temperate climates, where the temperature and moisture levels are moderate, watering in the early morning is generally ideal. This allows the grass to absorb moisture before the heat of the day and minimizes the risk of disease. However, it is important to adjust your watering frequency based on the specific needs of your lawn and monitor any changes in weather patterns.

It’s important to note that these are general guidelines, and it is always recommended to observe your lawn and make adjustments as needed.

Soil Type

emerging seedlings growing in dark, rich loamy soil. The small green sprouts are just beginning to peek out from the loosely packed fertile dirt, which has a crumbly texture typical of loam soils The type of soil in your yard plays a significant role in determining the watering requirements for your lawn.

Sandy soils 

Sandy soils have larger particles that allow water to drain quickly. This means that sandy soil requires more frequent watering compared to other soil types. However, it’s important to water sandy soil in smaller increments to prevent excessive runoff.

Loamy soils

Loamy soils are a balanced combination of sand, silt, and clay particles, providing good drainage while retaining moisture. These soils tend to hold water for longer periods, requiring less frequent watering. Watering loamy soil deeply but less often encourages deeper root growth and reduces the risk of water runoff. Monitor the moisture levels and adjust your watering schedule based on the needs of your lawn.

Clay Soils

Clay soils have small particles that compact easily, leading to poor drainage. As a result, clay soil retains water for longer periods and can become waterlogged if overwatered. It is important to water clay soil slowly and in shorter intervals to allow proper absorption. Regardless of your soil type, it is essential to water your lawn slowly and evenly. This allows the water to penetrate the soil gradually, preventing runoff and ensuring thorough irrigation. Additionally, using mulch or organic matter on the surface of the soil can help improve its water retention capacity, reducing the frequency of watering.

How to Tell If Your Lawn Has Been Watered Enough

Check the Soil through Touch

A young boy uses a small red plastic shovel to scoop and examine the soil.

Assessing soil moisture by touch is a simple yet effective method. Insert your finger into the soil to a depth of about 2-3 inches. If the soil feels moist, your lawn has likely received enough water. If it feels dry, it may be an indication that your lawn needs additional watering.

Conduct the Footprint Test

The footprint test is a practical way to assess if your lawn has received sufficient water. After watering, walk on the grass and observe the footprints left behind. If the grass springs back quickly and the footprints disappear, it indicates that the lawn has been adequately watered. If the footprints remain visible, it suggests that your lawn may need more water.

Use the Screwdriver Test

The screwdriver test is particularly useful for determining soil moisture levels in deeper soil layers. Insert a screwdriver into the ground shortly after watering. If it goes into the soil easily and comes out moist, it indicates sufficient watering. However, if it is difficult to penetrate or comes out dry, it suggests that your lawn may require additional watering

Utilize a Moisture Meter

A moisture meter is a handy tool that provides accurate measurements of soil moisture levels. Simply insert the moisture meter probe into the soil at different locations across your lawn. The meter will display the moisture content, indicating whether your lawn has received enough water or if additional watering is needed. Using a moisture meter takes the guesswork out of determining watering needs, ensuring precise irrigation.

Watering Mature Lawn vs Newly Planted Grass

Mature Lawn

Mature lawns generally require less frequent watering as they have developed deeper root systems. For mature lawns, it is best to water deeply but infrequently. This encourages the roots to grow deeper into the soil, making the lawn more resilient during dry periods. Aim to provide approximately 1 inch of water per week, either through rainfall or irrigation.

Newly Planted Grass

A pair of adult hands cupped together holding a pile of tiny brown grass seeds.

Newly planted grass requires more frequent watering to help establish strong root systems. Immediately after planting, water the grass thoroughly to ensure proper hydration. For the first few weeks, water daily or every other day to keep the soil consistently moist. As the grass begins to establish and roots develop, gradually decrease the frequency of watering while increasing the amount of water provided during each session.

To ensure effective watering for newly planted grass, pay attention to soil moisture levels. The soil should feel consistently damp, but not overly saturated. Be cautious of overwatering, as it can lead to shallow root growth or even plant diseases. Mulching around the newly planted grass can help retain soil moisture and reduce water evaporation.

Keep in mind that the watering needs of newly planted grass can vary depending on factors such as grass type, climate, and soil conditions. Be observant and adjust your watering routine as needed. As the grass matures and becomes established, transition to the watering practices suitable for a mature lawn.

Common Mistakes When Watering Your Lawn

Wost Time to Water Grass

Watering your grass in the evening or at night is considered one of the worst times to do so. Moisture lingering on the grass blades during the night creates a favorable environment for fungal diseases to develop. It is recommended to avoid watering late in the day to allow ample time for the grass to dry before nighttime.

Watering in the middle of the day under direct sunlight is also unfavorable. The intense heat causes rapid evaporation, resulting in wasted water. Additionally, the droplets of water on the grass can act as magnifying lenses, potentially burning the blades of grass.

Water Lawn Every Day

A large mound of brightly colored autumn leaves piled on top of green grass.

Watering your lawn every day may seem like a diligent approach to lawn care, but in reality, it can be excessive and harmful to the health of your lawn.

Frequent watering can lead to shallow root growth. When you water your lawn every day, the grass becomes accustomed to receiving water at the surface, discouraging the roots from growing deeper into the soil. Shallow roots make the grass more vulnerable to stress, drought, and other environmental factors.

Daily watering also promotes the growth of weeds. Weeds thrive in moist conditions and can outcompete your grass for resources. By watering less frequently but deeply, you encourage your grass to develop stronger and deeper roots, making it more resilient against weed invasion.

Excessive watering can result in waterlogged soil. When the soil is constantly saturated, it deprives the roots of necessary oxygen, leading to root rot and other fungal diseases. Over time, waterlogged soil can weaken the grass and cause it to decline.

Instead of watering every day, focus on deep and infrequent watering. This encourages the grassroots to grow deeper, making them more resilient and capable of accessing water stored deeper in the soil. Depending on the climate, grass type, and soil conditions, watering 1-2 times per week is often sufficient.

Stop Watering Your Lawn in Winter

While the watering requirements may be reduced compared to the active growing season, your lawn still needs some water during the winter months.

Winter conditions, including cold temperatures and dry air, can cause the grass blades to become dehydrated. Even though the grass is dormant, it still requires some moisture to stay healthy and prevent dehydration. Without sufficient water, the grass can become stressed and more susceptible to damage from freezing temperatures and winter diseases.

Watering your lawn periodically in winter also helps to maintain an adequate moisture level in the soil. This is particularly important in regions where winter precipitation is minimal. Providing some water to the soil helps to prevent it from becoming too dry and helps the grass roots stay hydrated.

However, it’s crucial to adjust the amount and frequency of watering during winter. Since the grass is not actively growing, it requires less water than during the warmer seasons. Aim for deep but infrequent watering sessions, allowing the water to penetrate the soil and reach the grassroots. Watering once every few weeks or when there is an extended dry period is generally sufficient.

Be mindful of the weather conditions when deciding when to water your lawn in winter. It’s best to choose a day when temperatures are above freezing and there is no snow or ice on the ground. Watering in the morning allows the grass blades to dry before nighttime, reducing the risk of fungal diseases.

Overwater Your Lawn

Overwatering is one of the most common mistakes when it comes to lawn watering. Many homeowners tend to believe that more water is always better for their lawns, but this misconception can lead to detrimental effects.

When the grass receives excessive water, it doesn’t need to extend its roots deeper into the soil to search for moisture. Shallow roots make the grass more vulnerable to drought conditions, as they are unable to access water stored deeper in the soil. This can lead to a weaker and less resilient lawn.

Overwatering also creates an ideal environment for the growth of weeds and diseases. Excess moisture promotes the proliferation of weed seeds and encourages the development of fungal diseases, such as root rot or lawn fungus.

Another consequence of overwatering is the waste of water resources. Water is a valuable and limited resource, and overusing it on your lawn not only wastes water but also increases your water bills.

Ignore Local Watering Restrictions

It’s important to familiarize yourself with the specific watering restrictions in your area. This information can usually be obtained from local water management authorities or municipal websites. Take note of the designated watering days, times, and any other specific guidelines that may be in place.

Ignoring local watering restrictions can result in excessive water usage, which not only strains the water supply but also leads to higher water bills for everyone. It’s important to be mindful of your water consumption and use water efficiently.

Non-compliance with watering regulations can also lead to penalties and fines imposed by local authorities. These penalties are in place to encourage responsible water usage and discourage wasteful practices.