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kill weeds before planting grass seed

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Remove the weeds from the area by either manually pulling them out of the ground or applying weed killer to the area. Hand-pulling weeds is safer for the soil, but removing all the roots can be difficult. Chemical weed killer kills the weeds and their roots, but may damage grass seed and leave pesticide residue in the soil, if you plant the seeds too soon after the herbicide application. If you choose to use weed killer, wait 2 to 3 weeks before planting new grass seed.

Apply a thin layer – about 1/4 inch – of high-quality topsoil over the grass seed. Applying too thick and the seeds have a hard time germinating. Attach a garden hose sprayer with a mist option to a water hose. Dampen the top 6 inches of the soil with the water hose set on mist. Using a mist of water instead of a stream will prevent the seeds from washing away.

Cover the soil with the correct grass seed for your location and the amount needed to cover the area. For example, some parts of the San Francisco Bay area work best with warm-season grasses — such as St. Augustine, buffalo or zoysia grass — while other Bay areas thrive with cool-season grasses such as tall fescue and perennial rye. Use your gloved hands to distribute the seeds evenly over areas smaller than 150 square feet. For larger areas, use a seed spreader.

Till the top 6 inches of soil with a soil tiller. You can rent or purchase soil tillers at home improvement centers and rental yards. After the tiller turns under the dead weeds and soil, rake the soil with a garden rake to level the area as much as possible. Remove large rocks and break up clumps of soil.

Trying to grow grass in a weeded area is a frustrating task that generally provides undesirable results. Weeds are aggressive and invasive plants that choke out grass and flowers. They quickly take over an area and are notoriously hard to get rid of. When you choose to grow grass in an area overrun by weeds, you essentially have to start fresh by establishing new turf.

Once your new grass is established and mowed two times, it is time for weed and feed! Follow the instructions on the package for the best results.

While certain types of grass choke out weeds once they are established, grass seed on its own will not kill weeds. Zoysia is a popular choice of grass for weed control. It forms a thick turf that won’t allow weeds to grow.

Weeds are frustrating! With a bit of patience and work, you can take back your yard with new, healthy grass!

Is there a grass seed that kills weeds?

Author: Matt Hagens

Healthy grass is a good weed preventer! Keep your new grass fed and watered as it grows. If it comes in thick and healthy, there won’t be any room for weeds!

Fall is a great time to overseed! The weeds should be dying down at this point. Check your local weather forecast for frost warnings. It is best to plant grass seed at least 45 days before the first frost. This will allow the new seed to take root before it goes dormant.

Wait until the grass is 3-4 inches tall before mowing for the first time. Avoid weed killers until the grass is established, as well.