When we think about creating and maintaining the beautiful nature of The Woodlands, we often only focus on the growth of the plants we can see, but it is just as important to pay attention to the soil beneath them.
While soil may be, in many minds, just small rocks and minerals ground up and packed together, it is much more. Soil is a living ecosystem. Healthy soil is filled with microorganisms, fungi, insects, and plant roots that work together to support plant growth. According to the USDA Natural Resources Conservation Service, healthy soil helps regulate water, cycle nutrients, support plant life, and filter pollutants before they reach local waterways. Healthy soils can also absorb and retain more water, reducing runoff and erosion during heavy rain events, such as hurricanes, which reduces the risk of property damage and injury from floods.
In The Woodlands and throughout the Houston region, a large portion of our ground is made up of heavy clay soils. While clay can hold nutrients well, it often becomes compacted and drains slowly. During dry periods, clay soils shrink and crack, and extended wet periods can leave roots sitting in water, drowning plants. Improving soil health can help address both challenges.
Fortunately, healthy soil does not require expensive products. The NRCS recommends four simple principles: keep soil covered, minimize disturbance, maintain living roots, and increase plant diversity.
Putting It into Practice
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Leave fallen leaves under trees! Instead of bagging every fallen leaf, consider leaving leaves beneath trees and shrubs. As they naturally break down, leaves return valuable nutrients and organic matter to the soil while also protecting it from erosion and temperature extremes. This layer also provides habitat for beneficial insects and wildlife.
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Add compost to garden beds! Compost is one of the easiest ways to improve soil structure and increase organic matter. Whether you purchase finished compost or make your own from kitchen scraps and yard waste, adding a layer to garden beds helps feed microorganisms and improves the soil's ability to retain moisture.
Person holding mulch in their hands
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Use mulch around plants! Applying a two- to three-inch layer of mulch around trees, shrubs, and flower beds helps conserve moisture, reduce weeds, and regulate soil temperature. As mulch gradually decomposes, it also contributes organic matter to the soil. Be sure to keep mulch a few inches away from tree trunks and plant stems to avoid moisture-related damage.
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Incorporate native plants into your landscape! Native grasses, wildflowers, shrubs, and trees are naturally adapted to our local climate and soils, making them easier to maintain once established. Their deep root systems improve soil structure, reduce erosion, and provide food and habitat for local wildlife. Replacing portions of traditional turfgrass with native plants can create a healthier landscape while reducing water use and maintenance.
A butterfly on a flower among a garden
Together, these practices increase organic matter, improve soil structure, and support beneficial soil organisms.
Healthy soil benefits more than just individual yards. By improving the ground's ability to absorb rainfall, healthy soils help reduce stormwater runoff and support the long-term health (and beauty!) of our waterways. Whether you are planting a garden, maintaining a lawn, or adding native plants, investing in soil health is one of the simplest ways to create a more resilient, sustainable, and beautiful landscape.
This resource was created by Fiona Rose Blackman as part of a volunteer internship program.
For more information, contact the Environmental Services Department at enviro@thewoodlandstownship-tx.gov or 281-210-3800.