In cases of partial renovation, remove all grass in the dead areas by raking or some other method. Lightly re-till the affected area before reseeding or resodding. Water these reseeded or resodded areas until the new grass is established.
To renovate completely
If you want to change to a different variety of grass, you'll need to renovate the area completely. Follow these general procedures:
- First kill the existing grass with a herbicide such as gIyphosphate.
- About two weeks after applying the herbicide, till the area to a depth of two to three inches. During the tilling process, incorporate lime and fertilizer according to soil test directions. Your county agent can give you information on soil testing
After leveling the area, sprig, seed or plug the new grass. Maintain proper moisture until your new grass is established.