Killing Weeds in Newly Seeded Lawn

Have you ever started re-seeding or aimed for starting a new lawn, only to face the dire fate of getting it infested by weeds some weeks later?

This guide on Lawn Advisors aims at supporting you in Killing Weeds in Newly Seeded Lawn.

Even with the highest levels of preparations & precautions, weeds can appear in the newly seeded lawn.

Don’t worry, Lawn Advisors are here to help you in killing weeds in newly seeded lawn by guiding you through the means of caring for a newly seeded lawn.

The better the caring, the less likely weeds may appear.

Generally speaking, healthy flourishing grass saves no space for weeds to have a livelihood near the lawn, according to multiple tests we ran at Lawn Advisors.

Caring for Newly Seeded Lawn

At Lawn Advisors, we believe that the best way to properly find a suitable way of killing weeds in newly seeded lawn is by preventing their growth/presence in the first place.

To make that happen, those are the main pieces of advice we’ll give you:

  1. Selecting The Correct Seeds.
  2. Watering Properly & Wisely.
  3. Mowing Newly Seeded Lawn.
  4. Fertilizing with Needed Nutrients.
  5. Weed Control Measures.

1. Selecting The Correct Seeds

Selecting the correct seeds means getting off the right foot in protecting your lawn from weeds.

Selecting seeds that only have seed types required for the lawn is what you’ll be looking for.

Always read the seeds packing and check the seeds they contain.

Make sure they don’t contain any weed seeds, as you don’t want to be planting the weeds in the lawn yourself.

2. Watering Properly & Wisely

Watering properly & wisely means the newly seeded lawn receives the required amount of watering, without washing away those new seeds, or creating havoc in the area.

To do so, make sure you apply enough water that would wet the soil to 6-8 inches deep into the soil.

Don’t just open the water source and wait for the hose to wet the soil to that level, you need to do it wisely, gently, and using the suitable hose head.

If you over-water, then you’ll wash away the seeds, and most of the time you’ll just drown them in water.

Water several times in an hour or so, make sure the whole area is wet, but not filled with water, and sprinkling the area is the best way to do it.

After that, all you need to do is remember that seeds have a single shot at germination, if you do it properly, they’ll flourish, and vice-versa.

Carrying out this watering method for a handful of times has always yielded me the proper germination for my lawn, make it your method too!

3. Mowing Newly Seeded Lawn

Watered your newly seeded lawn properly, and the growth started at a steady pace, and your lawn is now 3-4 inches high.

It’s mowing time, set your lawn mower to the height of 3 inches, put it on steady, wait until the soil is on the dry side, and get down to business.

If you set the lawn mower shorter than 3 inches, you may remove the roots off the ground. And setting up the mower when the soil is on the dry side can help you mow easily without damaging the new turf.

4. Fertilizing with Needed Nutrients

Fertilizing to the needs of your soil is a necessity, testing your soil’s needs of nutrients is an integral part of fertilizing properly.

Fertilizing before laying the seeds is important to prevent the growth of weeds, we’ll explain that later in this guide.

4-5 weeks after germination, the seeds will need another wave of fertilizing, to give it the proper nurturing.

5. Weed Control Measures

Weed control is no less important than the 3 aforementioned pieces of advice we can give you.

Once the weeds have appeared on your lawn despite the precautions, you need to act wisely, not hastily.

Immediately applying herbicides or any other type of chemicals can destroy the whole lawn before you even think about other steps or measures.

You should know this important note: weeds appearing in newly seeded lawn have really shallow rooting, and mowing can single-handedly remove them away.

However, if you encounter a stubborn weed type, spot treat them like we explained in Article.

Killing Weeds in Newly Seeded Lawn

Killing Weeds in Newly Seeded Lawn

Weeds have appeared in your newly seeded lawn, and the precautions haven’t worked out as well as you’ve wanted them to.

Here are the instructions you’ll need in your attempt to Killing Weeds in Newly Seeded Lawn:

  1. Remove Weeds Using Your Hands
  2. Homemade Herbicide’s Time
  3. “Vinegar The Weed Killer”

Removing weeds using your hands can be an easy task against a smaller-sized weed in the early growth phases.

Homemade Herbicides are the best for Killing Weeds in Newly Seeded Lawn, as they work heavenly for spot weed removal and smaller-sized types.

Pick a vinegar that’s made with 10-20% acetic acid, as this high level of acid can kill the weeds in a shorter time than herbicides.

Looking for further explanation for each of those methods, we’ve explained it all in this article.

Things You Shouldn’t Do When Attempting the Killing Weed in Newly Seeded Lawn

  1. Applying Cornmeal
  2. Using Newspapers
  3. Using Old Curtains/Carpets

Visiting the aforementioned guide will give you the impression that using cornmeal, newspapers, and old carpets can also be useful.

They are, but in killing weeds in newly seeded lawn, as newly seeded lawn heavily needs feed and water.

Those methods will deprive both the weeds and the newly seeded grass of feed and water, killing both the weeds and the grass.

Killing Weeds in Newly Seeded Lawn FAQ


Killing Weeds in Newly Seeded Lawn starts with choosing the correct seed type, watering properly, and carrying out precautions instead of fighting weeds after they establish their colonies in your lawn.

However, if you’ve already encountered the weed regardless of the aforementioned efforts, you have 3 methods of Killing Weeds in Newly Seeded Lawn without affecting the grass, tested by Lawn Advisors.

If you have any questions, feel free to leave them in the comments section below.

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