What is the right soil type for Round rock, TX?

I have my zones set to Loam which is default. I set the grass type to warm weather grass. We have St. Augustine grass.
Wondering what soil type I should use for a home in Round Rock, TX.

I would try starting here…this might help determine what you have.


This thread also has some good information on choosing a soil type.


@Videoguy, I recommend the Mason Jar test. It’s simple, easy and cheap. The problem with most USGS reports is they only track native soils. Any sort of soil prep done with your landscaping is not captured.

Hope this helps.

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I live in Highland Village, TX (Denton County) and it seems we have Silty Clay there. Most important is that it is some sort of Clay we have. Not sure if Round Rock is much different