As summer heat intensifies, many homeowners are keen to maintain lush lawns, often resorting to frequent watering to combat dryness. However, improper watering practices can inadvertently lead to issues like drought stress or fungal diseases.

Experts advise that lawns typically require about 1 inch of water per week, inclusive of any rainfall. To achieve this, morning watering is recommended as it reduces the risk of diseases and allows for better water absorption before daytime heat peaks. For most grass types such as zoysia, St. Augustine, bermuda, centipede grass, bluegrass and fescue, 1-2 watering sessions per week, each lasting 25-30 minutes, should suffice. Adjustments should be made based on individual irrigation systems and soil composition.

Here are essential tips regarding summer irrigation:

• Determining water needs: Conduct an irrigation audit by placing containers like tuna cans across different lawn zones. Run the sprinklers until these containers accumulate approximately 1 inch of water, ensuring uniform coverage.
• Optimal watering times: Water early in the morning for extended periods to minimize dew formation on grass blades, which aids in disease prevention and maximizes water absorption.
  
  Frequency of watering: Depending on soil type and climate, adjust watering frequency to ensure consistent moisture without waterlogging. Sandy soils require longer watering periods, while clay or loamy soils need shorter intervals to prevent oversaturation.
• Monitoring water duration: Regularly assess soil moisture and grass condition to gauge if adjustments are necessary. Signs of inadequate watering include thinning, yellowing, or browning grass, which can mimic symptoms of diseases.
• Combating heat stress: Avoid overwatering as it can exacerbate disease risks, especially in shaded areas. Instead, consider applying a light top dressing to provide shade and cooling effects. However, excessive use of dark-colored compost can potentially heat up and suffocate grass if not managed properly.
• New sod care: Have you recently installed new sod in your yard? Newly installed sod requires specific care during the summer months. Initially, water twice daily (morning and evening) for the first nine days, gradually tapering off to less frequent watering as the sod establishes. Monitor closely for signs of disease and adjust watering practices accordingly.

Maintaining a healthy lawn during summer involves a delicate balance of proper watering, vigilant monitoring, and timely adjustments. By adhering to these guidelines and staying attentive to your lawn's needs, homeowners can ensure vibrant, resilient grass throughout the hot season.

For further insights on lawn care and disease management, consult resources available through local agricultural extensions or reputable landscaping services.