Xeriscaping is a smart, sustainable way to landscape in Denver — but it's not just throwing down gravel and cactus. Done well, a xeriscape is good-looking, low-maintenance, and easy on water. Done poorly, it looks barren, struggles to establish, or wastes as much water as the lawn did. These are the seven mistakes we see most often in Denver yards, and how to avoid them — whether you're doing it yourself or hiring our xeriscape installation crew.

1. Choosing Plants That Can't Handle Denver's Winters

Denver sits in USDA Hardiness Zone 6a, where winter lows reach -10°F to -5°F. Drought-tolerant doesn't mean cold-hardy, and plenty of desert plants sold for Arizona or Nevada yards won't make it through a Front Range January.

Instead: Stick to native or regionally adapted plants like blue grama grass, yarrow, rabbitbrush, and penstemon that handle both drought and cold. See our full list: Top 10 Native Plants for a Thriving Denver Xeriscape. The Colorado Native Plant Society is another good resource for species that belong here.

2. Overusing Rock and Gravel

One of the biggest misconceptions about xeriscaping is that it means "zero plants" or "all gravel." Too much rock builds heat, sheds water instead of soaking it in, and looks like a parking lot.

Instead: Use gravel with a purpose — for drainage, contrast, or as a base for walkways — and balance it with layered plantings and mulch zones that shade the soil and bring in pollinators.

3. Ignoring Soil Health

Many Denver yards sit on compacted clay with poor drainage and little organic matter. Planting straight into it leads to root rot, stunted growth, and wasted water.

Instead: Do a soil test and amend as needed. Compost improves structure. Even drought-tolerant plants need decent soil to get established. Colorado State University's soil amendment guide covers the details.

4. Mixing Thirsty and Dry Plants on One Zone

Put a moisture-loving shrub and a dryland penstemon on the same drip zone and one of them loses — either the penstemon rots or the shrub goes thirsty.

Instead: Hydrozone. Group plants by water need and give each group its own irrigation zone, so each one gets what it needs and nothing more.

5. Keeping the Old Sprinklers

Spray heads that watered a lawn don't belong in rock and mulch beds. They throw water into the air, wet the surface (hello, weeds), and miss the root zone. In Denver Water's service area, spray irrigation is also banned from October 1, 2026, under the current drought rules — drip isn't.

Instead: Convert beds to drip. Our drip vs. sprinkler guide explains why, and our drip irrigation service handles the conversion.

6. Planting at the Wrong Time

A July install means new plants face 90°F days with no root system. They can make it, but they need daily babysitting, and losses run higher.

Instead: Plant in spring (late April through June) or fall (September through mid-October). See our guide to the best time to xeriscape in Denver.

7. Skipping the Design

Buying plants you like and finding spots for them later usually ends with crowded beds, bare patches, and a yard that never quite reads as intentional.

Instead: Start with a plan — sun and shade, drainage, paths, mature plant sizes, and irrigation zones. Our xeriscape design guide walks through it.

Understanding Denver's Hardiness Zone (6a)

The 2023 USDA Plant Hardiness Zone Map puts most of the Denver metro in Zone 6a, with some warm urban pockets at 6b and higher foothill-edge neighborhoods closer to 5b. Zone tells you how cold a plant has to handle; it says nothing about drought. A good Denver plant has to pass both tests — and handle clay, hail, and wind on top of that. Plant Select is a useful place to find plants tested for exactly these conditions.

Cold-Hardy Plants That Also Handle Drought

Blue grama — Colorado's state grass; fine-textured and happy with very little water once established
Yarrow — tough, spreading perennial with flat flower heads through summer
Blanket flower — native, blooms for months, and pollinators work it constantly
Rubber rabbitbrush — native shrub that lights up gold in September and does fine in poor soil
Gambel oak — native shrub-to-small-tree for screening and fall color

For more plant options, see our full guide: Top 10 Native Plants for Denver Xeriscaping, or browse our plant library.

Design Tips for a Thriving Xeriscape

Hydrozoning: Group plants by water needs to make irrigation more efficient
Sun Mapping: Track your yard's sun and shade patterns before designing beds
Hardscaping: Use permeable materials like gravel or flagstone for paths and patios
Soil Prep: Improve clay-heavy soils with compost to support root development
Scale & Flow: Balance open space, layered plant heights, and movement paths

Benefits Beyond Water Savings

A xeriscape built on native plants does more than save water. The Xerces Society points to native plants as critical habitat for pollinators. On the practical side, you're mowing nothing, fertilizing rarely, and running far less water — which adds up year after year.

Is Xeriscaping Right for You?

If you're tired of high water bills, patchy lawns, and endless upkeep, xeriscaping is worth a look. Redo the whole yard or one section — either way, Xeris can take you from design through installation, with a focus on native plants and designs that hold up in Denver's climate. We work across Denver, Lakewood, Littleton, Centennial, Parker, Wheat Ridge, Englewood, and the surrounding metro.

Ready to Xeriscape the Right Way?

Xeris designs and installs xeriscapes across Denver built to avoid these mistakes. Request an estimate and let's build something that actually holds up.

Top 7 Mistakes to Avoid When Xeriscaping in Denver