Ideal Sand/Silt/Clay Ratio For Bermuda Grass

If you’ve done a soil test with Texas A&M, which provides a texture analysis, you may be wondering your ideal ratio of sand, silt and clay in your soil.

Target Soil Texture Ratio For Bermuda Grass

For Bermuda grass, the ideal soil composition is a sandy loam, which typically means having a sand/silt/clay ratio of about 60% sand, 30% silt, and 10% clay. This type of soil provides good drainage while retaining enough moisture and nutrients to support healthy growth. Adjustments might be needed based on specific local conditions, but this is a solid starting point for most Bermuda grass lawns.

How To Adjust Texture

To adjust texture, focus on what you need more of (not what you need less of).


To improve drainage and aeration for Bermuda grass, add masonry or concrete sand, which you can find at landscaping supply stores like SiteOne. This type of sand is coarse enough to enhance soil structure without retaining too much moisture. Mix it with organic compost to avoid nutrient loss, and integrate this mixture into the top 6-12 inches of your lawn soil. This combination encourages the dense, vigorous growth characteristic of healthy Bermuda grass.


Enhancing your lawn’s silt content for optimal Bermuda grass growth might involve a bit more sourcing, as pure silt isn’t commonly sold in bags like sand or clay. However, some garden centers or landscape suppliers offer “garden loam” or “topsoil,” which typically have a higher silt content. Look for these products and incorporate them into your lawn’s top layer. This will improve the soil’s moisture and nutrient retention, creating an ideal growing environment for Bermuda grass.


In the uncommon scenario where your sandy soil needs more clay to retain moisture and nutrients for Bermuda grass, bentonite clay is a suitable addition. Available at gardening or landscape stores, add it sparingly to prevent compaction and drainage issues. Mix it well with organic matter and incorporate it into the top layer of your soil. Remember, adding clay should be done cautiously and only if necessary, as Bermuda grass generally prefers looser, well-draining soils.







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