Drought-Tolerant Lawn Grass: A Guide to Choosing and Maintaining a Water-Wise Lawn
What is Drought-Tolerant Lawn Grass?
Drought-tolerant lawn grasses are specifically bred or selected for their ability to withstand extended periods of water scarcity. These grasses have evolved natural adaptations or have been cultivated to minimize water loss and survive in arid conditions.
Benefits of Drought-Tolerant Lawns
- Conserve water, reducing utility bills and environmental impact.
- Reduce the need for supplemental irrigation, saving time and effort.
- Maintain a lush, green lawn even during dry spells.
- Increase the resilience of your lawn to climate change and water restrictions.
Choosing the Right Drought-Tolerant Grass
The best drought-tolerant grass for your lawn will depend on your specific climate, soil conditions, and desired lawn characteristics. Consider the following factors:
- Cool Season Grasses: These grasses thrive in cooler temperatures and require more frequent watering than warm-season grasses. Suitable cool season drought-tolerant grasses include tall fescue, sheep fescue, and wheatgrass varieties.
- Warm-Season Grasses: These grasses prefer warm temperatures and can survive on less water during their peak growing season. Drought-tolerant warm-season grasses include Bermudagrass, St. Augustine grass, Zoysia grass, centipede grass, and Bahia grass.
Cultural Practices for Drought Tolerance
In addition to selecting a drought-tolerant grass, proper cultural practices can further enhance its water-saving capabilities:
- Deep Infrequent Watering: Water your lawn deeply and infrequently rather than shallowly and frequently. This encourages deep root growth and reduces water loss through evaporation.
- Healthy Soil: Amend your soil with organic matter to improve water retention and nutrient availability. Healthy soil promotes strong root development and overall plant health.
- Appropriate Mowing Height: Mow your lawn at a species-appropriate height to reduce stress and water loss. Taller mowing heights promote deeper root growth and shading of the soil.
Drought-Tolerant Lawn Grass Cultivars
Within each grass species, there are specific cultivars that have been bred for enhanced drought resistance. Some notable drought-tolerant cultivars include:
- Cool Season Grasses:
- Tall Fescue: ‘Rebellion’ and ‘Reveille’
- Sheep Fescue: ‘Durar’ and ‘Harding’
- Wheatgrass: ‘Blue Grama’ and ‘Western Wheatgrass’
- Warm-Season Grasses:
- Bermudagrass: ‘Celebration’ and ‘TifSport’
- St. Augustine Grass: ‘Floratam’
- Zoysia Grass: ‘El Toro’ and ‘Empire’
- Centipede Grass: ‘TifBlair’ and ‘Emerald’
- Bahia Grass: ‘Pensacola’ and ‘Argentine’
Dormant Grass
During extreme drought conditions, some grasses may turn yellow and go dormant to conserve water. Dormant grass is not dead and will recover once it receives adequate moisture. Avoid excessive foot traffic on dormant grass to prevent damage.
Tips for Maintaining a Drought-Tolerant Lawn
- Choose the right grass for your climate and soil conditions.
- Water deeply and infrequently.
- Maintain healthy soil by adding organic matter.
- Mow your lawn at an appropriate height for the species.
- Fertilize your lawn according to soil test recommendations.
- Aerate your lawn regularly to improve water penetration.
- Reduce foot traffic on dormant grass during extreme drought.
By following these tips, you can establish and maintain a beautiful, drought-tolerant lawn that will thrive even during water-scarce conditions.