Soil Testing For Lawns

The vitality of your grass and other plants is closely tied to the well-being of your soil. Prioritizing soil health ensures superior grass quality from the ground up. While regular lawn fertilization is a good practice to provide essential nutrients, determining the precise nutrient needs of your lawn can be challenging.

For instance, despite consistent nitrogen application, you may not observe improvements in the appearance or quality of your grass. Uneven growth patterns might also be evident in different areas of your lawn, without a clear understanding of the underlying reasons.

Before investing time and money in potential solutions, a prudent approach is to conduct a soil analysis on your property. This analysis reveals the specific nutrients your lawn requires for optimal growth.

What is a soil test? It's a tool that assesses the macro and micronutrients present in your soil, indicating the necessary adjustments for your lawn and garden to attain an ideal pH level. Recommendations for soil enhancement, typically involving fertilizers or amendments, are often provided based on the test results.

Soil tests vary in forms and procedures, but generally involve collecting a soil sample from your lawn and submitting it for analysis. The method of submission—whether by mail or through a local cooperative extension office—depends on the chosen company or turfgrass expert.

Why should you use a soil test? It's a cost-effective means to identify your soil's requirements for optimal performance. As the pH levels of soil can be influenced by frequent fertilizer and chemical applications, a soil test offers insights into the specific nutrients your lawn needs, preventing unnecessary expenses on redundant fertilizers. Additionally, it helps avoid environmental harm caused by excess fertilizers washing into natural water bodies.

Conducting a soil test empowers you to make informed decisions about the fertilizers and nutrients your soil truly needs, contributing to a healthier environment for your lawn and garden.

To collect and submit a soil analysis:

  1. Use plastic probes or baggies to collect several soil samples from different locations in your yard.
  2. Walk in a zigzag pattern, collecting samples from 10–15 locations.
  3. Remove any plant material, mulch, or organisms from the samples and combine them in a plastic bucket.
  4. Allow the soil to dry before collecting about 1 pint for submission to a turfgrass expert.

The timing of soil testing varies based on grass type and location. Warm-season grasses, such as zoysia, should be tested in spring, while cool-season grasses like Kentucky bluegrass are best tested in late summer or early fall.

How often should you test your soil? Most experts recommend testing every 1–3 years, or more frequently if issues arise. Submitting soil samples is an invaluable practice for maintaining the health of your lawn and garden.

Consider factors like pH levels, nutrient deficiencies, and micronutrient importance when interpreting soil analysis results. Overreliance on macronutrients without addressing micronutrient needs can impact your lawn's health. Carbon, often overlooked, is a vital component for soil balance and plant health.

For soil improvement following a soil analysis, some tests come with product suggestions. If not, understanding fertilizer labels is crucial for selecting the right product for your soil. 

In summary, conducting a soil analysis is a proactive step towards ensuring the well-being of your lawn and garden. It provides valuable insights into nutrient needs, prevents unnecessary expenses, and contributes to a healthier environment.

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Understanding Soil Health

Assessing soil health involves looking at physical, chemical, and biological components.

Soil health is a fundamental concept that underpins the success of agriculture, gardening, and land management practices. It refers to the overall well-being and vitality of the soil ecosystem, encompassing physical, chemical, and biological aspects. Understanding soil health is crucial for maintaining sustainable and productive landscapes while also contributing to environmental conservation.

  1. Physical
    The physical properties of soil play a critical role in its health. These properties include soil texture, structure, compaction, and water-holding capacity. Soil texture refers to the proportions of sand, silt, and clay particles in the soil. A balanced texture allows for adequate water drainage and retention, preventing waterlogging and drought stress. Soil structure influences root penetration, aeration, and nutrient movement. Healthy soil structure promotes a friable and well-drained medium for plant growth.
  2. Chemical
    Soil chemistry directly affects nutrient availability and plant growth. Key chemical factors include soil pH, nutrient content, and the presence of contaminants. Soil pH measures the soil's acidity or alkalinity and profoundly influences nutrient uptake by plants. Nutrient content, including macronutrients like nitrogen, phosphorus, and potassium, must be in balance to support healthy plant growth. Monitoring and maintaining proper nutrient levels through fertilization are essential for maximizing crop yields and preventing nutrient deficiencies.
  3. Biological
    The biological component of soil health pertains to the diverse array of microorganisms, insects, and other organisms that inhabit the soil ecosystem. These organisms play crucial roles in nutrient cycling, organic matter decomposition, and disease suppression. Soil microorganisms break down organic matter, releasing nutrients that are subsequently made available to plants. A rich and diverse soil microbiome contributes to enhanced nutrient availability and plant resilience against diseases.

Our Soil Tests

We provide a range of soil tests from basic chemistry, to texture/infiltration rate, all the way to biology.

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Basic Soil Health Test

The Basic Soil Health Test is an excellent starting point for understanding your soil's condition. It offers a comprehensive analysis encompassing pH levels, nutrient content, CEC (Cation Exchange Capacity), salts, and organic matter. This budget-friendly test is ideal for identifying potential soil health issues and establishing a solid foundation for further management.

Full Chemistry Test

Our Full Chemistry Test provides a detailed assessment of your soil's quality, guiding you towards healthy and sustainable soil management practices. Through an extensive analysis, we examine macro and micronutrient levels, pH, CEC, organic matter, and salinity. This comprehensive understanding empowers us to create tailored recommendations for soil amendments and treatments, optimized for the specific plants you intend to cultivate. By optimizing your soil's chemistry, you can expect to foster more robust and vibrant plant growth.

Complete Soil Health Test

Uncover a deeper understanding of your soil's health with the Complete Soil Health Test. This comprehensive analysis goes beyond the basics, measuring nutritional factors and examining soil texture. It covers macro and micronutrients, organic matter, pH, CEC, as well as sand, silt, and clay percentages. Additionally, we assess carbon sequestration levels, providing you with a holistic view of your soil's composition. The personalized recommendations derived from this test empower you to make precise adjustments to enhance your soil's health and productivity.

MWELO Soil Management Report

For those navigating California's MWELO guidelines, our MWELO Soil Management Report is an indispensable resource. This report not only ensures compliance but also promotes sustainable and thriving landscapes. It includes comprehensive data such as soil texture, infiltration rate, pH, total soluble salts, sodium content, and organic matter percentage. With amendment recommendations, optionally tailored to specific plant types, and annual maintenance tips, you'll be equipped to create landscapes that are both aesthetically pleasing and environmentally responsible.

Heavy Metals

The Heavy Metals analysis is a vital tool in assessing potential soil contamination. Given the uncertain history of properties, this analysis identifies the presence of heavy metals that might have accumulated due to past activities or nearby industrial sources. With results available in approximately nine business days, you'll gain insights to ensure the safety and health of your soil.

Soil Food Web

Explore the intricate world beneath the surface with our Soil Food Web analysis. By estimating population sizes of essential trophic groups—bacteria, fungi, protozoa, and nematodes—we unveil the microbiological health of your soil. Additionally, we identify specific organisms within these groups, providing insights into the soil's successional level and overall condition. This analysis is applicable to soil, compost, and compost tea samples, offering a holistic perspective on your soil's biological vitality.

Pesticide Screening

The Pesticide Screening can detect hundreds on common pesticides that may have been applied or drifted from nearby sources.

Herbicide Screening

The Herbicide Screening plays an important role in ensuring the safety of your soil and plants. By detecting the presence of herbicide residues, this test can indicated whether a soil has had history of herbicide applications.

See our other tests.

Regenerative Soil Management Practices

Working with nature to improve soil means implementing practices like cover cropping, mulching, and composting.

Cover Cropping

Cover cropping involves planting specific crops during non-growing seasons to cover and protect the soil. These crops enhance soil structure, prevent erosion, suppress weeds, and provide organic matter when incorporated into the soil. Leguminous cover crops also contribute nitrogen fixation, enriching soil fertility naturally. Cover cropping is a sustainable method that improves soil health and biodiversity.


Mulching entails covering the soil surface with organic materials like straw, leaves, or wood chips. Mulch conserves soil moisture, moderates temperature fluctuations, suppresses weeds, and prevents soil erosion. As the mulch breaks down, it contributes organic matter, enriching the soil's structure and fertility. Mulching is an effective and easy way to maintain soil health.


Composting transforms organic waste into nutrient-rich compost. Incorporating compost into the soil enhances its structure, moisture retention, and fertility. Compost also introduces beneficial microorganisms that aid in nutrient cycling and disease suppression. Composting not only reduces waste but also revitalizes soil, making it an essential component of sustainable gardening.

Water Conservation Techniques

Implementing water-efficient practices such as drip irrigation, rainwater harvesting, and utilizing drought-resistant plants minimizes water use and reduces soil erosion. Conserving water in landscapes maintains soil moisture, supports plant growth, and sustains overall soil health. Water conservation techniques are vital for responsible gardening in arid and water-scarce regions.

If you have any questions feel free to get in touch with the Alluvial Soil Lab team at (831) 216-1367 or at

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