Common Landscaping Mistakes Denver Homeowners Should Avoid

What This Guide Covers

• Skipping site, soil, and drainage analysis
• Failing to hydrozone irrigation
• Too much unused or hard-to-water turf
• Poor sprinkler uniformity and spray in wrong areas
• Choosing plants that don't match the site
• Leaving soil bare
• Set-and-forget irrigation timers

1.Skipping site, soil, and drainage analysis

Denver soils vary widely. Heavy clay is common in many neighborhoods, while sandy or rocky soils appear in others. Clay holds water and drains slowly; sandy soil drains quickly and dries out fast. Planting without understanding your soil and drainage leads to plants that struggle or die regardless of how much you water. A basic soil assessment before planting or redesigning a landscape saves time and money.

2.Failing to hydrozone irrigation

Putting turf, shrubs, and trees on the same irrigation zone forces very different plants to share one schedule. Different plant types require different watering schedules and root-zone coverage, and their needs also change with soil, weather, exposure, and establishment. CSU Extension recommends grouping plants with similar water needs on separate zones.

3.Too much unused or hard-to-water turf

Turf is one of the highest water-use elements in a landscape. Narrow strips, steep slopes, and areas that receive little foot traffic are difficult to irrigate efficiently and often look poor. CSU Extension's water-wise design guidance recommends reducing turf to areas where it is actually used and replacing the rest with lower-water groundcovers, mulch, or adapted plantings.

4.Poor sprinkler uniformity and spray in wrong areas

Spray heads in narrow or irregular areas (side yards, strips between sidewalk and street, L-shaped beds) produce poor coverage and significant runoff. Rotary or drip systems are better suited to these areas. Misaligned heads, broken nozzles, and heads that spray onto pavement waste water and create dry spots. A seasonal system check catches these issues before they damage plants.

5.Choosing plants that don't match the site

A plant that thrives in full sun and well-drained soil will struggle in a shaded, clay-heavy spot, even if it is labeled "Colorado-adapted." Sun exposure, soil type, drainage, wind exposure, and mature size all determine whether a plant will perform well in a specific location. Matching plant selection to actual site conditions is one of the most important factors in a successful landscape.

6.Leaving soil bare

Bare soil in Denver’s climate loses moisture quickly, erodes in heavy rain, and becomes a weed seedbed. A 3–4 inch layer of organic mulch in beds can retain moisture, moderate soil temperature, suppress weeds, and improve soil structure over time. Keep mulch away from plant stems and tree trunks to reduce rot risk.

7.Set-and-forget irrigation timers

Setting an irrigation controller in spring and leaving it unchanged through fall is one of the most common sources of water waste in Denver landscapes. Plant water needs change with the seasons, and a schedule appropriate for July is excessive in September. Controllers should be adjusted monthly or seasonally, or upgraded to a smart controller that adjusts automatically based on weather data.

When Professional Help May Be Appropriate

If your landscape has persistent dry spots, plant losses, runoff problems, or an irrigation system that hasn't been evaluated in years, a professional assessment can identify the root causes and recommend practical solutions. Landscape redesign, irrigation zone reconfiguration, and smart controller installation are all services that address the issues described in this guide.

Related Resources

• Drip Irrigation vs. Sprinklers: Which Is Better for a Denver Yard?
• Best Drought-Tolerant Plants for Denver Front Yards
• Our Landscaping and Irrigation Services