Best Drought-Tolerant Groundcovers To Replace Thirsty Turf

The Hidden Cost of Thirsty Turf

Traditional turfgrasses like Kentucky Bluegrass and Tall Fescue are notorious water hogs. According to the Environmental Protection Agency (EPA), the average American family uses 320 gallons of water per day, and nearly 30 percent of that is devoted to outdoor uses. In arid and semi-arid regions, landscape irrigation can account for up to 60 percent of total household water consumption. Maintaining a lush, green lawn typically requires 1 to 1.5 inches of water per week, which translates to roughly 0.62 gallons per square foot. For a modest 5,000-square-foot lawn, that is over 3,000 gallons of water every single week during the peak summer months.

As drought conditions become more frequent and municipal water restrictions tighten, homeowners are actively seeking sustainable alternatives. Replacing high-maintenance turf with drought-tolerant groundcovers is one of the most effective strategies for creating a resilient, water-wise landscape without sacrificing curb appeal.

Why Choose Drought-Tolerant Groundcovers?

Groundcovers are low-growing plants that spread horizontally to form a dense mat over the soil. When selected for xeriscaping, these plants offer a multitude of benefits over traditional sod:

• Drastic Water Reduction: Once established, drought-tolerant groundcovers require 50 to 75 percent less water than traditional turfgrass.
• Erosion Control: Their dense root systems stabilize soil on slopes and prevent runoff during heavy, infrequent rainstorms.
• Reduced Maintenance: Eliminate the need for weekly mowing, synthetic fertilizers, and chemical herbicides.
• Pollinator Support: Many flowering groundcovers provide essential nectar and pollen for bees and butterflies.
• Weed Suppression: A thick mat of groundcover naturally shades out weed seeds, reducing the need for manual weeding.

Top 5 Drought-Tolerant Groundcovers for Lawn Replacement

Not all groundcovers are created equal. When replacing a walkable lawn, you need plants that can handle occasional foot traffic, thrive in your local hardiness zone, and survive extended dry spells. Here are five premier choices for water-wise landscaping.

1. Creeping Thyme (Thymus serpyllum)

Creeping thyme is a woody, aromatic perennial that forms a dense, low-growing carpet. It thrives in full sun and well-draining soil. During early summer, it produces a stunning display of tiny pink or purple flowers. While it can handle light foot traffic, it is best suited for between stepping stones or in low-traffic front yards. It requires virtually no supplemental water once established in Zones 4-9.

2. Silver Carpet (Dymondia margaretae)

Native to South Africa, Dymondia is a premier lawn substitute for hot, coastal, and inland climates (Zones 9-11). Its striking silver-green foliage lies completely flat against the ground, and it produces small, yellow daisy-like flowers. Dymondia is highly walkable, making it an excellent direct replacement for backyard play areas. It requires deep, infrequent watering once its deep taproots are established.

3. Kurapia (Phyla nodiflora)

Kurapia is a highly refined, sterile cultivar of Lippia (frog fruit). It is celebrated for its incredible drought tolerance and deep root system, which can reach up to three feet into the soil. Kurapia stays green year-round in frost-free zones (Zones 7-10) and can survive on just one or two deep waterings per month during peak summer. It handles moderate foot traffic and recovers quickly from wear.

4. Creeping Sedum (Sedum spurium)

For areas with poor, rocky, or shallow soil where traditional grass refuses to grow, creeping sedum is the ultimate solution. As a succulent, it stores water in its fleshy leaves, allowing it to endure severe drought. It grows 4 to 6 inches tall and spreads rapidly. While it is not ideal for heavy foot traffic, it is perfect for covering large, unused slopes or parkways in Zones 3-9.

5. Dutch White Clover (Trifolium repens)

While technically a legume, Dutch White Clover (or microclover blends) is increasingly used as a living lawn alternative. It requires about 50 percent less water than traditional turf and naturally fixes nitrogen from the air into the soil, eliminating the need for synthetic fertilizers. It stays remarkably green during dry spells and handles moderate foot traffic beautifully across Zones 3-9.

Groundcover Comparison Chart

Step-by-Step Guide to Replacing Your Lawn

Transitioning from turf to groundcover requires careful preparation to ensure your new plants thrive and outcompete any lingering weeds. The Texas A&M AgriLife Extension emphasizes that proper soil preparation and grass removal are the most critical steps in xeriscaping.

Step 1: Remove the Existing Turf via Sheet Mulching

Avoid using chemical herbicides or gas-powered sod cutters, which disrupt the soil microbiome. Instead, use the sheet mulching method. Mow the existing grass as short as possible. Lay down overlapping layers of plain, uncoated corrugated cardboard directly over the grass. Wet the cardboard thoroughly, then cover it with 4 to 6 inches of arborist wood chips. Wait 8 to 10 weeks for the grass to decompose and the soil biology to activate.

Step 2: Amend the Soil

Once the grass has broken down, rake back the wood chips. Spread a 2-inch layer of high-quality organic compost over the exposed soil and lightly till it into the top 4 inches. This improves drainage and provides a nutrient-rich base for your new groundcover plugs.

Step 3: Plant the Plugs

Most drought-tolerant groundcovers are sold in 72-plug trays rather than seed or sod. Using a dibber or small trowel, plant the plugs 8 to 12 inches apart on center, depending on the species. A 12-inch spacing requires exactly one plug per square foot. Apply a 2-inch layer of organic mulch (like shredded bark) between the plugs to retain moisture and suppress weeds, keeping the mulch an inch away from the plant stems.

Step 4: Execute the Establishment Watering Schedule

Even drought-tolerant plants need regular water to establish their root systems. Follow this strict watering schedule for the first 90 days:

• Weeks 1-2: Water lightly for 10 minutes every single day to keep the root zone moist.
• Weeks 3-4: Water for 15 minutes every third day to encourage roots to grow deeper.
• Month 2: Water deeply for 20 minutes twice a week.
• Month 3 and Beyond: Transition to a deep soak once every 10 to 14 days, depending on seasonal temperatures.

Cost Breakdown: Turf vs. Groundcover (500 Sq Ft Area)

While the upfront cost of groundcover plugs can be higher than laying cheap sod, the return on investment is realized quickly through reduced water bills and eliminated landscaping maintenance.

• Traditional Sod Installation: Sod costs roughly $0.50 to $0.80 per square foot. For 500 square feet, materials cost $250 to $400. Add $200 for soil prep and labor. Total: $450 to $600. Annual water and maintenance cost: $400+.
• Groundcover Plug Installation: Plugs cost between $0.75 and $1.25 each. At one plug per square foot, materials cost $375 to $625. Cardboard, compost, and mulch add about $150. Total: $525 to $775. Annual water and maintenance cost: Under $100.

Most homeowners recoup the initial installation difference within 18 to 24 months through municipal water savings and eliminated mower maintenance.

Long-Term Maintenance and Irrigation Efficiency

Once your groundcover is fully established, maintenance is minimal. You will need to edge the borders once or twice a year to keep the plants from creeping into walkways or garden beds. The Water Use It Wisely campaign strongly recommends converting traditional spray sprinklers to drip irrigation or soaker hoses for groundcovers. Spray heads lose up to 30 percent of their water to wind drift and evaporation, whereas drip systems deliver water directly to the root zone at a slow rate, maximizing absorption and minimizing runoff.

By replacing your thirsty turf with a resilient, drought-tolerant groundcover, you are not just updating your landscape design; you are actively conserving vital water resources, supporting local pollinators, and reclaiming your weekends from the endless cycle of mowing and edging. Embrace the beauty of xeriscaping and watch your water-wise yard thrive for years to come.