Are there brown, dead patches scattered across your lawn? Perhaps they're there because you killed weeds in that area, or maybe they're the result of drought. If you just let them go, weeds may grow there rather than grass. So it's better to dig them up and re-plant grass seed in the area. Here's how.
Step 1: Digging up the brown patches
Use a small trowel to trace an outline around the edge of the brown patch. Just push the trowel 4 or 6 inches down into the soil. Once you've made a ring, start peeling the top layer of soil off inside the circle. It should come up rather easily since this soil will be held together by the dead grass roots. If you come across any thicker root that you think belong to weeds, be sure to dig them out completely.
Step 2: Fill the area with topsoil.
Purchase some topsoil at your local home improvement store. Don't just use dirt from a friend's yard, as this is likely to contain weed seeds. Work a couple teaspoons of fertilizer pellets (a variety made for lawns) into the soil. Then pour the soil into the hole that was left behind after you removed the old, rooted soil, Pat the topsoil down to compact it.
Step 3: Scatter the grass seed.
This is a bit more complicated than it sounds because you have to ensure that you choose the right type of grass. If you live in the northern US or Canada, look for a cool season grass mixture. If you live in the south, a warm season grass mixture is the best option. Sprinkle a generous amount of grass seed over the compacted topsoil. Then sprinkle just a very light layer of topsoil over the grass seeds. You want to barely cover them. Too thick a layer may keep them from germinating properly. Pat this layer down gently.
Step 4: Water and maintain.
Water the newly-seeded area to moisten the grass seeds. Then apply a layer of straw or mulch to the area. This will help trap in moisture and heat to encourage the grass to germinate. Water the grass daily. As soon as you see little blades of grass poking out, you can remove the mulch or straw to allow the grass to see some sunlight.
Re-planting brown patches is pretty simple once you get used to it, and doing so will keep your lawn looking green and flawless. For more information, contact Vista Landscape and Maintenance, Inc. or a similar company.