Best Practices For Summer Lawn Irrigation

by | Jun 10, 2024 | Landscaping, Mowing, Uncategorized | 0 comments

Maintaining a lush, green lawn during the hot summer months can be challenging, but with proper irrigation practices, you can ensure your grass stays healthy and vibrant. Effective summer lawn irrigation involves understanding your grass type, soil conditions, local climate, and employing the right watering techniques. This comprehensive guide covers everything you need to know to keep your lawn thriving all summer long.

Understanding Your Lawn’s Needs

Grass Types and Their Water Requirements

  • Cool-Season Grasses: These grasses, such as Kentucky bluegrass, fescue, and ryegrass, thrive in cooler climates and require more frequent watering during hot, dry periods. They typically need about 1 to 1.5 inches of water per week.
  • Warm-Season Grasses: Varieties like Bermuda, zoysia, and St. Augustine grass are more drought-tolerant and require less frequent watering. They usually need about 0.5 to 1 inch of water per week.

Soil Types and Water Retention

  • Sandy Soils: Drain quickly and require more frequent watering to maintain moisture levels.
  • Clay Soils: Retain water longer but can become compacted, leading to poor drainage and root issues. Water these soils less frequently but for longer durations.
  • Loam Soils: A balanced mix of sand, silt, and clay, these soils retain moisture well and provide good drainage. They require moderate watering frequencies.

Local Climate and Weather Patterns

  • Rainfall: Monitor local weather patterns and adjust your irrigation schedule based on rainfall. Reduce watering after significant rain events.
  • Temperature and Humidity: Higher temperatures and lower humidity increase evaporation rates, necessitating more frequent watering.

Best Practices for Summer Lawn Irrigation

1. Watering Schedule

  • Early Morning Watering: Water your lawn early in the morning, between 4 AM and 10 AM. This allows the grass to absorb moisture before the heat of the day, reducing evaporation and preventing fungal growth.
  • Avoid Evening Watering: Watering in the evening can leave grass blades wet overnight, promoting fungal diseases and pests.

2. Watering Duration and Frequency

  • Deep and Infrequent Watering: Water your lawn deeply and infrequently to encourage deep root growth. This helps grass become more drought-tolerant and resilient.
  • General Guidelines:
    • Cool-season grasses: 1 to 1.5 inches of water per week, applied once or twice a week.
    • Warm-season grasses: 0.5 to 1 inch of water per week, applied once a week.

3. Measuring Water Application

  • Rain Gauge: Use a rain gauge to measure the amount of water your lawn receives from rainfall and irrigation. This helps ensure you are providing the right amount of water.
  • Tuna Cans or Containers: Place several small, flat-bottomed containers around your lawn when irrigating. Measure the water collected to ensure uniform distribution and proper coverage.

4. Irrigation Systems

  • Sprinkler Systems: Use an automated sprinkler system with adjustable heads to ensure even water distribution. Check and adjust the heads regularly to avoid overwatering or underwatering specific areas.
  • Drip Irrigation: Ideal for garden beds and areas with shrubs and trees, drip irrigation delivers water directly to the root zone, reducing evaporation and runoff.
  • Hose-End Sprinklers: For smaller lawns or areas without an in-ground system, use hose-end sprinklers. Ensure even coverage by moving the sprinkler periodically.

5. Soil Management

  • Aeration: Aerate your lawn annually to reduce soil compaction and improve water infiltration. This allows roots to grow deeper and access more nutrients and moisture.
  • Topdressing: Apply a thin layer of compost or organic matter to improve soil structure and water retention. This helps sandy soils retain moisture and clay soils improve drainage.
  • Mulching: Mulch garden beds and around trees to retain soil moisture, reduce evaporation, and suppress weeds.

6. Mowing Practices

  • Mow High: Set your mower blades higher during the summer to leave grass taller. Taller grass shades the soil, reducing evaporation and promoting deeper root growth.
  • Regular Mowing: Mow regularly to avoid cutting more than one-third of the grass blade at a time. This reduces stress on the grass and helps maintain its health.

7. Preventing Runoff and Waste

  • Cycle and Soak Method: For compacted or sloped areas, use the cycle and soak method. Water for shorter periods, allowing the soil to absorb the water before resuming irrigation. This reduces runoff and ensures deeper penetration.
  • Check for Leaks: Regularly inspect your irrigation system for leaks or broken heads. Repair any issues promptly to prevent water waste.

8. Adjusting for Weather Conditions

  • Rain Sensors: Install rain sensors on automated sprinkler systems to prevent watering during or immediately after rainfall.
  • Smart Controllers: Use smart irrigation controllers that adjust watering schedules based on local weather conditions, soil moisture, and plant needs.

9. Additional Tips for Summer Lawn Care

  • Fertilization: Apply a balanced, slow-release fertilizer in late spring or early summer to support healthy growth. Avoid high-nitrogen fertilizers during the peak heat to prevent stress.
  • Weed Control: Keep your lawn free of weeds that compete for water and nutrients. Apply pre-emergent herbicides in spring and spot-treat weeds as needed.
  • Pest Management: Monitor for pests such as grubs and chinch bugs, which can damage your lawn. Use integrated pest management (IPM) techniques to control infestations without harming beneficial insects.

Troubleshooting Common Irrigation Issues

1. Dry Spots:

  • Check for clogged or misaligned sprinkler heads.
  • Ensure even water distribution by adjusting the irrigation system.
  • Aerate compacted areas to improve water infiltration.

2. Overwatering:

  • Reduce watering frequency and duration.
  • Inspect for leaks or broken sprinkler heads.
  • Adjust irrigation schedules based on rainfall and weather conditions.

3. Runoff:

  • Use the cycle and soak method for better absorption.
  • Improve soil structure with aeration and topdressing.
  • Check and adjust sprinkler heads to avoid watering non-target areas.


Proper summer lawn irrigation is essential for maintaining a healthy, lush lawn. By understanding your grass type, soil conditions, and local climate, and employing the right watering techniques, you can ensure your lawn stays green and vibrant all summer long. Remember to water early in the morning, use deep and infrequent watering practices, and maintain your irrigation system regularly. With these best practices, you’ll enjoy a beautiful, resilient lawn that can withstand the heat of summer.

For professional lawn irrigation and care services, trust the experts at Express Lawn Care. Contact us today to schedule a consultation and let us help you achieve the lawn of your dreams!

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