What to Plant Along Colorado Lawns to Reduce Water Use

Water is a precious resource in Colorado. Between low precipitation, high evaporation rates, and growing pressure on municipal supplies, reducing lawn water use is both an ecological responsibility and a practical way to cut utility bills. This article explains what to plant along Colorado lawns to reduce water use, how to choose plants for specific Colorado regions and microclimates, and step by step guidance for replacing or retrofitting lawn edges with drought tolerant, low-maintenance plantings.

Why replace or edge lawns in Colorado

Lawns are attractive, usable, and familiar, but they are also among the most water intensive landscape choices. Establishing a band of drought tolerant plants along lawn edges or replacing strips of turf with perennial and woody plantings reduces irrigation needs, lowers maintenance time, improves biodiversity, and creates more functional outdoor space.
Selecting the right plants for Colorado requires attention to elevation, sun exposure, soil type, winter cold, and summer heat. Plant choices that thrive in Denver or Fort Collins may not perform well in Grand Junction or at 8,000 feet. The guidance here focuses on climate-appropriate, low-water options suited to common Colorado regions: Front Range urban areas, Eastern Plains, Western Slope, and mountain valleys.

Principles for choosing low-water plants

Start with these practical rules before picking species or purchasing nursery stock.

Choose plants that are adapted to local climate and elevation.
Prefer native and regionally adapted plants that evolved under Colorado conditions.
Group plants by water need so you can irrigate zones efficiently.
Replace high-water turf strips first: narrow strips between drives, sidewalk edges, and bed perimeters are easy wins.
Improve soil and add mulch: many drought tolerant plants still need good establishment and benefit greatly from improved soil texture and a cover of mulch to reduce evaporation.

Plant categories that work well along Colorado lawns

Use a mix of the following categories to create visual interest and function while minimizing irrigation needs.

Ornamental grasses and grass-like plants

Ornamental grasses are a backbone for low-water plantings. They provide texture, movement, and winter interest. Many are perennial, die back and return, and require minimal gardening.

Blue grama grass (Bouteloua gracilis): native, warm-season, excellent for Front Range and plains, 6 to 24 inches tall.
Festuca arundinacea varieties adapted to dry sites: use only drought-tolerant cultivars.
Carex species (native sedges): good in shady or moist micro-sites, such as lawn edges with runoff.

Low-water perennials

Perennials give long-lived color and structure. Choose plants that tolerate alkaline soils and cold winters, common across Colorado.

Penstemon species: many Colorado natives with showy spikes and low water needs once established.
Salvia species (salvia nemorosa and other ornamental salvias): heat tolerant and pollinator friendly.
Achillea millefolium (yarrow): tough, drought tolerant, and adaptable to low fertility soils.
Gaillardia (blanket flower): thrives in hot, dry conditions and blooms mid-summer.

Shrubs and subshrubs

Shrubs create structure, reduce lawn edge maintenance, and often require water only for the first couple of years after planting.

Sagebrush relatives and Artemisia species: aromatic, low-water, and suitable for prairie and foothill conditions.
Russian sage (Perovskia atriplicifolia): drought tolerant, silvery foliage, late summer flowers.
Ninebark (Physocarpus opulifolius) cultivars that are adapted to dry soils in urban settings.
Serviceberry (Amelanchier alnifolia) and mountain mahogany in higher elevation or western slope plantings for native shrubs that support wildlife.

Groundcovers and lawn alternatives

Replace narrow turf strips with drought tolerant groundcovers that can handle foot traffic or decorative uses.

Creeping thyme (Thymus serpyllum): tolerates light foot traffic, fragrant, low water once established.
Sedum and other succulents for hot, well-drained exposures.
Clover mixes (white clover or microclover) as low-mow lawn alternatives that fix nitrogen and reduce water needs compared to traditional turf grasses.

Trees for shade and long-term water savings

Strategically placed trees reduce summer irrigation needs by shading lawns and lowering soil temperatures.

Native and adapted trees such as Colorado blue spruce (in appropriate elevations), native oak and crabapple varieties, and durable maples suited for Front Range urban environments.
Prefer one or two canopy trees; avoid dense tree lines that might increase water use through maintenance or lawn shading that favors moss.

Plant recommendations by Colorado region

Plant selection must be tailored to elevation, precipitation, and temperature extremes. Below are recommended plant types and specific species suitable for each principal Colorado region.

Front Range (Denver, Boulder, Fort Collins)

Ornamental grasses: Blue grama, Little bluestem.
Perennials: Penstemon, yarrow, gaillardia, Russian sage.
Shrubs: Dwarf ninebark, serviceberry, native chokecherry in lower elevations.
Groundcovers: Creeping thyme, sedum, ornamental clover.

Eastern Plains

Grasses: Blue grama, big bluestem in more naturalized areas.
Perennials: Gaillardia, prairie coneflower, blanketflower, coreopsis.
Shrubs: Sagebrush, rabbitbrush.

Western Slope and Grand Junction area

Drought tolerant shrubs: Sagebrush, saltbush, rabbitbrush.
Perennials: Penstemon species from the region, gaillardia, penstemon.
Trees: Native cottonwood in riparian zones; juniper for dryer uplands.

Mountain valleys and high elevation sites

Use plants rated for cold hardiness and shorter growing seasons.
Shrubs: Mountain mahogany, low-growing manzanita where available.
Perennials: Alpine adapted penstemon, geranium species, dwarf asters.

Practical steps to install drought tolerant plantings along lawns

Follow this practical sequence when replacing or edging lawn areas.

Assess the site: sun exposure, soil type, drainage, slope, and microclimates.
Select plants suited to the conditions and group them by water needs.
Remove lawn strips thoughtfully: sheet mulch, sod removal, or solarization for stubborn turf.
Amend soil only as needed: many xeric plants prefer lean, well-drained soils; heavy clay benefits from gypsum and organic matter but avoid over-amending decorative beds that need drought tolerant plants.
Plant in the appropriate season: spring plantings give longer establishment time; fall plantings can work at lower elevations if done early and mulched.
Install efficient irrigation: drip irrigation or soaker hoses targeted to plant root zones. Irrigate deeply and infrequently during the first 1 to 2 years to encourage deep rooting.
Mulch: apply 2 to 3 inches of inorganic or organic mulch around plants to slow evaporation, moderate soil temperature, and reduce weed pressure.
Maintain: prune dead wood, remove aggressive weeds, and reduce irrigation as plants mature. Most drought adapted plants will need regular water for the first two years, then minimal supplemental irrigation.

Watering and irrigation considerations

Drought tolerant plants still need water to establish. Use these guidelines.

Establishment phase: Water deeply 1 to 2 times per week for the first growing season depending on soil and weather. Sufficient soakings encourage roots to penetrate deeply.
After establishment: Transition to infrequent, deep waterings every 3 to 6 weeks in summer, depending on plant type and soil. Native xeric plants often survive on natural precipitation with minimal supplemental irrigation.
Use drip or microspray systems. Avoid overhead sprinklers on beds; they waste water through evaporation and wet foliage, which can encourage disease.
Mulch and soil management reduce irrigation frequency significantly.

Design tips for attractive, low-water lawn edges

Create plantings that look intentional and attractive while conserving water.

Use massing: repeat the same species in groups of three to five for stronger visual impact and easier irrigation zones.
Layer heights: place lower groundcovers at the edge nearest the turf, taller perennials and shrubs behind.
Leave small mown paths or stepping stones if you need to access beds; reducing edging maintenance saves water and labor.
Incorporate functional elements such as gravel mulch, decomposed granite paths, or xeric mulch to reduce evapotranspiration and add contrast.

Maintenance and long-term care

Low-water plantings are not no-care landscapes. Annual observation and light maintenance keep them healthy.

Year one and two: watch for irrigation needs, remove invasive weeds, and prune for shape as needed.
After establishment: reduce watering and fertility. Many drought tolerant species decline with over-fertilization.
Replace plants that fail with alternate species better suited to the exact micro-site conditions.

Concrete takeaways and checklist

Start small: replace a 2 to 4 foot strip along sidewalks, driveways, and beds to gain water savings while testing plant choices.
Select regional natives and drought-adapted perennials and grasses rather than high maintenance ornamentals.
Improve soil drainage where needed, add mulch, and use drip irrigation to target root zones.
Plant in groups and layer heights for visual appeal and efficient watering zones.
Expect to water newly planted areas for 1 to 2 seasons during establishment, then taper off.
Keep a simple maintenance plan: seasonal pruning, checking irrigation, and annual mulching.

If you implement these strategies, you can significantly reduce lawn water use in Colorado while improving the resilience, biodiversity, and beauty of your landscape. Plant intentionally, match plants to place, and focus on establishment practices that promote deep roots and minimal long-term irrigation.