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5 Costly Landscaping Mistakes (And How to Fix Them)
Sep 03, 2025

5 Costly Landscaping Mistakes (And How to Fix Them)

Supriyo Khan-author-image Supriyo Khan
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Transforming your outdoor space can boost curb appeal and create a sanctuary, but common landscaping mistakes can lead to costly issues like dead plants and drainage problems. With the right knowledge, you can avoid these pitfalls and design a low-maintenance, thriving landscape that adds value and joy to your property.

Mistake 1: Poor Planning Sets You Up for Failure

Ignoring Your Local Climate

One of the most expensive mistakes homeowners make is choosing plants that simply cannot survive in their local environment. That stunning tropical palm might look perfect in the nursery, but it won't survive a harsh winter in Minnesota.

Before purchasing any plants, research your USDA Hardiness Zone and select species that naturally thrive in your area. Native plants are often your best bet—they require less water, resist local pests better, and support local wildlife. Additionally, consider microclimates within your yard. Areas near south-facing walls may be warmer, while spots under large trees stay cooler and receive less sunlight.

Neglecting Soil Quality

Many landscaping failures stem from poor soil conditions that go unaddressed. Soil pH, drainage, and nutrient content all play crucial roles in plant health. Clay soil may retain too much water, while sandy soil drains too quickly. Alkaline soil prevents some plants from absorbing nutrients, while acidic soil can damage others.

Invest in a professional soil test before planting anything significant. This small upfront cost can prevent years of struggling with plants that never quite thrive. Based on your results, you may need to amend your soil with compost, adjust pH levels, or improve drainage.

Mistake 2: Improper Planting Techniques

Overcrowding Plants

That small shrub at the nursery might look insignificant, but it could grow to be six feet wide within a few years. Overcrowding is one of the most common landscaping mistakes, leading to competition for resources, poor air circulation, and increased disease susceptibility.

Always research the mature size of plants before placing them. Consider both height and spread, and plan accordingly. While spacing plants properly might leave your landscape looking sparse initially, proper spacing ensures healthy growth and reduces the need for frequent transplanting or removal.

Planting at the Wrong Time

Timing can make or break your landscaping efforts. Planting during extreme weather conditions stresses plants and reduces their survival chances significantly. Hot summer months are particularly challenging for new installations, as plants struggle to establish root systems while dealing with heat stress.

The best planting times vary by region and plant type, but generally, spring and fall offer the most favorable conditions. Spring planting allows plants to establish before summer heat, while fall planting gives roots time to develop before winter dormancy. Always check your local frost dates and plan accordingly.

Mistake 3: Neglecting Essential Maintenance

Skipping Regular Pruning and Trimming

Many homeowners plant their landscape and then neglect ongoing maintenance, particularly pruning and trimming. This oversight leads to overgrown plants that block walkways, damage structures, or simply look unkempt. More importantly, lack of pruning can create safety hazards with overhanging branches or unstable tree limbs.

Different plants require different pruning schedules and techniques. Spring-flowering shrubs should be pruned immediately after blooming, while dormant season pruning works best for most trees. For major tree work, consider professional tree trimmings like those offered in Salt Lake City and other metropolitan areas, as improper tree trimming can damage or kill mature trees.

Regular maintenance also includes deadheading flowers, removing diseased plant material, and controlling weeds. These tasks may seem minor, but they significantly impact your landscape's health and appearance.

Mistake 4: Water Management Problems

Inconsistent Watering Practices

Watering seems straightforward, but it's actually one of the most misunderstood aspects of landscaping. Both overwatering and underwatering can kill plants, and the right amount varies significantly based on plant type, soil conditions, weather, and season.

Many homeowners water too frequently with shallow applications, encouraging shallow root development and making plants more susceptible to drought stress. Instead, water deeply but less frequently, allowing soil to dry somewhat between waterings. This encourages deep root growth and creates more resilient plants.

Failing to Install Proper Irrigation

Hand-watering works for small gardens, but larger landscapes benefit significantly from proper irrigation systems. Drip irrigation delivers water directly to root zones with minimal waste, while well-designed sprinkler systems can cover large areas efficiently.

Consider factors like sun exposure, soil type, and plant water needs when designing irrigation zones. Group plants with similar water requirements together, and install separate zones for areas with different sun exposures or soil conditions.

Mistake 5: Ignoring Pest and Disease Management

Reactive Rather Than Proactive Approach

Many homeowners only address pest and disease issues after significant damage has occurred. By this point, treatment is often more difficult and expensive, and some damage may be permanent.

Regular plant inspection helps catch problems early when they're easier to manage. Look for discolored leaves, unusual spots, wilting, or pest activity during your routine garden maintenance. Early detection allows for targeted treatments that are both more effective and environmentally friendly.

Using Inappropriate Treatment Methods

When pest or disease problems arise, many homeowners reach for the strongest chemical treatment available. However, broad-spectrum pesticides can harm beneficial insects and may not address the specific problem at hand.

Start with the least toxic approach that will be effective. This might include removing affected plant material, improving air circulation, adjusting watering practices, or introducing beneficial insects. Chemical treatments should be targeted to the specific pest or disease and applied according to label instructions.

Conclusion

Successful landscaping requires careful planning, proper plant selection, and regular maintenance. Start with a realistic plan that suits your climate and soil, choose appropriate plants, and provide adequate care. Investing time and effort now will enhance your property's value and bring long-term satisfaction.

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