Soils

A nice, thick lawn requires healthy soil as its base, but it’s difficult to make changes to the soil once grass has been established. Most gardening recommendations include working organic matter into the soil through digging or tilling prior to planting, but this can’t be done once the grass has grown. So what’s a homeowner to do with an established lawn that’s in need of some serious help?
If done properly, the technique of top-dressing, or adding a thin layer of soil over your lawn, can improve the soil without killing the existing turf. Top-dressing addresses some common lawn problems, including: Low spots due to rotting tree roots, settling after underground pipe or cable installation, erosion, uneven terrain caused by winter freezing and thawing, water runoff, tunnelling critters, general soil settling over time, compacted soil in high-traffic areas or low-lying places, bare spots from variations in soil texture and nutrients, heat, drought, or other environmental damage, depletion of nutrients due to leaching, neglect, or repeated use of chemical fertilizers.