Screened soil is the best option to level out your yard before you lay sod.
There are several options. First, our garden mix is a blend of leaf compost, dirt and sand. This mix does not have any type of “Miracle Grow” or other growth supplement. We have had our garden mix tested by a local lab and it is rich in organic matter.
If you have a rich organic dirt base but would like to add some dirt to it, garden mix would be an acceptable option. If you have plenty of rich dirt but want to add more organic material to it, try our leaf compost. This nitrogen rich compost is a great additive to dirt.