I am amazed at how quickly New England’s weather can change. In late April, we complained that it was unseasonably cold and we were receiving abundant rain. Now, it is hot and muggy, and we are in a drought. Summer droughts can significantly impact grass, leading to several visible and physiological changes. Here are some key points to consider:

Effects of Summer Drought on Grass:

1. Discoloration: During a drought, grass often turns brown or yellow due to a lack of water. This discoloration indicates that the grass is going dormant to conserve resources.

2. Growth Slowdown: Grass growth slows significantly during a drought as the plant conserves water and energy. New shoots and blades may be sparse or absent.

3. Soil Compaction: Dry conditions can lead to soil compaction, making it harder for roots to access water and nutrients.

4. Root System: Grass’s root system can be severely affected. Shallow roots may dry out quickly, while deeper roots may struggle to find sufficient moisture.

5. Increased Weed Growth: Weeds often have deeper root systems and are more drought-tolerant, causing them to take over the lawn during drought conditions.

Management Strategies:

1. Watering: Water deeply but infrequently to encourage more profound and deeper root growth. Early morning watering reduces evaporation losses and protects against fungus in hot, humid weather.

2. Mowing: Raise the mowing height to reduce stress on the grass. Taller grass shades the soil, reducing evaporation and promoting more profound/deeper root growth.

3. Aeration & Overseeding: In the fall, aerate the lawn to reduce soil compaction and improve water infiltration. Overseed to thicken the lawn and choke out weeds and invasive grasses, introducing newer and healthier grass to complement the existing grass.

4. Drought-Tolerant Grass Species: Consider planting drought-tolerant grass varieties better adapted to survive dry conditions.

5. Fertilization: Avoid fertilizing during drought conditions, as this can further stress the grass. Fertilize during recovery periods when adequate moisture is available.

6. Top Dress: In the fall, add compost to the lawn before seeding to help thicken it, along with aeration and overseeding.

Proper lawn care and management practices can help mitigate the effects of drought and promote grass recovery once normal moisture conditions return. No one likes to see the damaging effects of drought conditions. Applying some or all of the strategies above will significantly improve the quality of your grass over time. Supplemental water from an irrigation system is another great way to fight the effects of drought stress on the lawn.  

Information provided by Chris Hopkins, Greenleaf Landscaping LLC — with 30 years of experience serving all your landscaping needs.  Greenleaf is a total greenspace management company. We design, build, and maintain beautiful outdoor living spaces of all sizes for discerning New England families. Talk to Greenleaf today: 774-421-9570

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