Replace Turfgrass With Drought-Tolerant Groundcovers

The Hidden Cost of Traditional Turfgrass

For decades, the quintessential American lawn has been defined by a sprawling, uniform carpet of Kentucky bluegrass or tall fescue. However, as climate patterns shift and municipal water restrictions become more frequent, homeowners and landscape professionals are rethinking the traditional turfgrass lawn. Maintaining a pristine green yard requires immense resources, from chemical fertilizers to gas-powered mowing equipment, but the most critical resource of all is water.

According to the Environmental Protection Agency (EPA), outdoor water use accounts for nearly 30% of total household water consumption, with some arid regions seeing that number climb above 60%. Much of this water is lost to evaporation, runoff, and inefficient irrigation practices. By replacing high-maintenance turfgrass with drought-tolerant groundcovers, you can dramatically reduce your outdoor water footprint, lower your utility bills, and create a dynamic, ecologically beneficial landscape.

Top 4 Drought-Tolerant Groundcover Alternatives

Transitioning to a water-wise landscape does not mean sacrificing greenery or curb appeal. Modern sustainable landscaping utilizes living mulches and low-growing perennial groundcovers that thrive on minimal irrigation once established. Below are four of the most reliable, drought-resistant alternatives to traditional turf.

1. Creeping Thyme (Thymus serpyllum)

Creeping thyme is a woody, aromatic perennial that forms a dense, low-growing mat, typically reaching only 2 to 4 inches in height. Varieties like 'Elfin' and 'Pink Chintz' are highly prized for their delicate foliage and summer blooms, which attract vital pollinators. Thyme thrives in full sun and well-draining soil. While it can handle light foot traffic, it is best suited for ornamental lawn replacements, pathway borders, and rock gardens. Planting Cost: Approximately $1.25 to $1.75 per plug.

2. Creeping Sedum (Sedum spurium)

As a succulent, creeping sedum stores water directly in its fleshy leaves, making it exceptionally drought-tolerant. Cultivars like 'Dragon's Blood' offer striking bronze-red foliage that intensifies in the fall, while 'John Creech' provides a vibrant, deep green carpet. Sedum requires almost no maintenance, thrives in poor soils, and demands virtually no supplemental water once established. It is not recommended for high-traffic play areas but excels on slopes and difficult-to-mow hillsides. Planting Cost: Approximately $1.80 to $2.20 per plug.

3. Micro Clover (Trifolium repens var. 'Pirouette')

Micro clover is a revolutionary lawn alternative that stays low to the ground (under 6 inches) and produces very few flowers compared to standard white clover. Its most significant advantage is its ability to fix atmospheric nitrogen, naturally fertilizing the soil and eliminating the need for synthetic nitrogen applications. It stays green during mild droughts and handles moderate foot traffic exceptionally well. Planting Cost: Roughly $30 to $40 per pound of seed (covers 1,000 sq. ft.).

4. Kurapia (Phyla nodiflora)

Developed by university researchers, Kurapia is a highly drought-tolerant, sterile cultivar of the native Lippia plant. It features deep taproots that can reach up to 6 feet into the soil, allowing it to access deep moisture reserves unavailable to shallow-rooted turfgrass. Kurapia can tolerate heavy foot traffic, dog urine, and poor soil conditions, making it one of the closest functional equivalents to a traditional recreational lawn. Planting Cost: Approximately $2.50 to $3.00 per plug.

Groundcover Comparison Chart

Use the table below to select the right water-wise groundcover based on your site conditions, budget, and functional needs.

Plant Species	Sun Exposure	Foot Traffic Tolerance	Est. Weekly Water Need (Established)	Est. Cost per 100 sq. ft.
Creeping Thyme	Full Sun	Light	0.2 - 0.5 inches	$60 - $80 (Plugs)
Creeping Sedum	Full to Part Sun	None / Very Light	0 - 0.2 inches	$75 - $100 (Plugs)
Micro Clover	Full to Part Shade	Moderate to Heavy	0.5 inches	$3 - $5 (Seed)
Kurapia	Full Sun	Heavy	0.3 - 0.5 inches	$90 - $120 (Plugs)

Step-by-Step Turf Replacement Guide

Replacing an existing lawn requires careful planning to ensure the new groundcover is not immediately outcompeted by aggressive turfgrass roots or invasive weeds. According to guidelines on eco-lawns and sustainable transitions published by Oregon State University Extension, proper site preparation is the single most important factor in long-term drought resilience.

Step 1: Turf Eradication via Sheet Mulching

Avoid using chemical herbicides like glyphosate, which can disrupt the soil microbiome necessary for your new groundcover to thrive. Instead, utilize the sheet mulching method. Mow the existing grass as short as possible. Lay down 3 to 4 overlapping layers of plain, uncoated corrugated cardboard directly over the turf, ensuring there are no gaps where weeds can penetrate. Wet the cardboard thoroughly, then cover it with 3 to 4 inches of arborist wood chips or a mix of compost and topsoil. Allow this to sit for 8 to 12 weeks. The grass will decompose, enriching the soil while smothering the old lawn.

Step 2: Soil Preparation and Amendment

Once the cardboard has broken down, assess your soil. Drought-tolerant plants generally prefer well-draining soil. If you have heavy clay, incorporate 2 inches of pumice, perlite, or coarse compost into the top 6 inches of the soil profile using a broadfork or tiller. Do not over-amend with rich organic matter; many groundcovers like sedum and thyme actually perform better and produce more blooms in leaner soils.

Step 3: Planting Plugs and Seed

For plug-based groundcovers (Thyme, Sedum, Kurapia), spacing is critical for rapid coverage and weed suppression. Plant plugs on 6-inch to 12-inch centers, depending on the species and your budget for upfront plant material.

Pro Tip: When planting hundreds of plugs, use a cordless drill equipped with a 2-inch bulb auger bit. This saves hours of manual digging, reduces physical strain, and ensures a consistent planting depth for rapid root establishment.

For Micro Clover, prepare a fine, level seedbed. Mix the tiny seeds with sand for even distribution, and broadcast at a rate of 1 lb per 1,000 square feet. Lightly rake the seed into the top 1/8 inch of soil and roll the area with a lawn roller to ensure seed-to-soil contact.

The Establishment Phase vs. Long-Term Drought Care

A common misconception about drought-tolerant landscaping is that the plants require zero water immediately upon planting. In reality, the first 90 days are the "establishment phase," and careful irrigation is mandatory.

• Weeks 1-2: Water daily for 10-15 minutes to keep the top 2 inches of soil consistently moist. This encourages shallow root development and prevents transplant shock.
• Weeks 3-6: Reduce watering to every other day, but increase the duration to 20-30 minutes. This forces the roots to grow deeper in search of moisture.
• Weeks 7-12: Transition to watering twice a week, applying roughly 0.5 to 1 inch of water per session. Deep, infrequent watering is the cornerstone of drought conditioning.
• Post-Establishment: Once the groundcover has fully knit together (usually after one full growing season), you can rely primarily on natural rainfall, supplementing with deep watering only during severe, prolonged heatwaves.

Ongoing Maintenance and Weed Control

While water-wise groundcovers drastically reduce maintenance, they are not entirely "no-maintenance." During the first year, hand-weeding is essential before the groundcover forms a closed canopy. Once established, the dense mat of thyme, sedum, or clover will naturally shade out most weed seeds, preventing germination.

Edging is another critical maintenance task. Groundcovers like creeping thyme and Kurapia will happily spill over into adjacent garden beds or hardscaping. Install physical barriers, such as steel or aluminum landscape edging buried at least 4 inches deep, to keep your living carpet contained. For micro clover, an occasional mowing at a height of 3 to 4 inches during peak spring growth will keep the lawn looking tidy and encourage lateral spreading.

Conclusion

Replacing a traditional turfgrass lawn with drought-tolerant groundcovers is one of the most impactful water-wise decisions a homeowner can make. By selecting the right plant for your specific microclimate, utilizing sheet mulching for eco-friendly turf removal, and following a strategic deep-watering establishment schedule, you can cultivate a resilient, beautiful landscape. As highlighted by the University of California Agriculture and Natural Resources (UC ANR) sustainable landscaping initiatives, these living alternatives not only conserve vital municipal water supplies but also foster healthier soils, reduce chemical runoff, and support local biodiversity. Embrace the shift toward drought-resilient landscaping, and enjoy a vibrant yard that thrives in harmony with your local climate.