The Best Pre Emergent Herbicide for Your Lawn

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Do you have a lawn? If so, then you know that keeping it healthy and looking good takes a lot of work. One of the most important steps in maintaining your lawn is using the right pre emergent herbicide. There are many different products on the market, and it can be difficult to decide which one is right for you. In this blog post, we will discuss the best pre emergent herbicides for your needs and help you choose the right one for your lawn!

What are pre-emergent herbicides?

Pre-emergent herbicides are preparations that are applied to the soil before weeds begin to grow. They act by preventing weed seeds from germinating, so they don’t have a chance to take root and grow. This is an important step in weed control because it prevents problems before they occur.

Such products are effective in controlling annual, biennial and perennial weeds. Pre-emergent herbicides quickly kill the young root system of weeds, which is why they are considered effective. They simply keep weeds from developing and smothering your seedlings or other plants in the garden and yard.

Remember, pre-emergent herbicides should not be used on a seed bed of grass, because the product can slow down their growth. But already rooted plants do not need to be afraid of such herbicides, because the product will not affect them.

How to choose pre-emergent herbicides?

By type of weed

A pre-emergent herbicide is sold in garden stores for different types of weeds. It is important to read the instructions accurately before buying so you can get the right product. It is best to choose all-purpose products that fight many types of weeds at once, but this is not necessary. For example, if you know that only annual and biennial weeds grow on your plot, a pre-emergent herbicide can be purchased for them.

Concentrate or ready-to-use product?

Pre-emergent herbicides are available as concentrates and ready-to-use products (RTU). Concentrates have the advantage that they are cheaper and you can adjust the amount of product to the size of your lawn. This variant is best for large areas because the product can be diluted with water, so its volume increases several times.

Ready to use products are ready to use without dilution with water. They are convenient because you do not need to bother with measuring cups to determine the exact amount of water to dilute the concentrate. The product is ready to use, so it can be used immediately after purchase to treat the garden or vegetable garden.

Type of pre-emergent herbicides

Pre-emergent herbicides are of two types:

Selictic herbicides, otherwise known as selective herbicides. That is, they affect only a certain type of weeds without damaging the crop around which the treatment is carried out. In this case, the herbicide destroys the root system of the weed without then having a toxic effect in the soil and on surrounding plants;

Non-selective – otherwise known as continuous action herbicides. They are effective against multiple perennial and very persistent weeds. But here it is important to be very careful not to burn adjacent plants. This herbicide is very harsh and can harm everything living, not just a particular weed.

Soil pre-emergent herbicides act by creating a barrier on the soil surface that prevents weed seeds from germinating. That is, all of your plants will grow, but the weeds, once they reach the barrier in the soil, immediately die. They will not be able to overcome it.

Varieties of pre-emergent herbicides

Various pre-emergent herbicides can be found on the market in terms of ease of use:

Granular – convenient in that they can have a slow release of toxic substances. That is, they last longer and are more effective than liquid ones. They are aimed at long-term weed control;

Liquid – distinguish between concentrates and ready-to-use products. They are convenient for quick and extensive application.

Herbicide volume

The rate of pre-emergent herbicide application depends on the size of your lawn as well as the current problem. If there are a lot of weeds, you know it from last year and you want to prevent their appearance, it is better to buy a concentrate to dilute it at home with water.

Preemergence herbicides in liquid form are available in a variety of convenient volumes, where you can choose from 1 liter to 10 or more.

By type of packaging

The pre-emergent herbicide is available in different types of packaging for ease of use:

  • Jug;
  • Bucket;
  • Jar;
  • Can;
  • Bottle with sprayer;
  • Canister.

Choose what is most convenient for your use.

Additional tools

Some manufacturers offer measuring cups, spoons, or clear bottles with a sprayer. All of these make it easier to use the herbicide and require no additional investment.

Questions and answers

Which herbicide is best for seedbed preparation?

Choosing the best herbicide for pre-sowing tillage depends on the characteristics of your lawn and its needs. Some factors to consider include the type of grass you have, the climate you live in, and any other weeds or pests that are in your lawn. You can find a special herbicide on the market that’s suitable for treating the soil before seeding. This type of herbicide should definitely be a sedative. This way, it won’t be able to harm future crops that you plant.

What is the best preemergence herbicide?

The best preemergence herbicide contains an active ingredient called siduron. This chemical prevents crabgrass and other annual grasses from germinating. It is important to apply this type of herbicide before these weeds have already grown. Then the herbicide will no longer work.

Can I apply pre-emergent herbicides after fertilizing the soil?

Yes, you can apply pre-emergent herbicides after fertilizing the soil. This is best done when the soil is moist so that the herbicide can spread evenly. You should also make sure that no rainfall is expected within 24 hours of applying the herbicide. But this method will only work if you choose delicate herbicides.

On the packaging of such manufacturers write that they can be used together with fertilizer. But if you choose a different type, using them with fertilizer can reduce the effectiveness of the herbicide.

Are pre-emergent herbicides a threat to grass?

Pre-emergent herbicides are not a threat to the grass, but only if the grass is already mature. But if you planted the grass not too long ago, it’s important to wait about 60 days to treat the soil with a pre-emergent herbicide. Otherwise it will affect the grass seeds, damage them or slow their growth. Also consider the fact that if your grass is damaged by drought or pests, and grows poorly, a pre-emergent herbicide can make it feel worse.

Are preemergence herbicides a threat to animals and humans?

Pre-emergent herbicides are designed to kill weeds before they emerge from the soil. However, these chemicals can pose a threat to animals and people if used incorrectly. Pre-emergent herbicides can be dangerous if they come in contact with the skin or are swallowed. These chemicals can also be toxic to other plants if non-selective options are used.

The safest pre-emergent herbicide is organic corn gluten. If other types of products are used, it is important to cover the lawn for 24 hours after treating it.

How often should I apply pre-emergent herbicides?

Pre-emergent herbicides should be applied before the weeds begin to sprout in the spring. This is usually around the time of the average last frost date in your area. To keep the lawn from becoming overgrown with weeds throughout the season, pre-emergent herbicides should be reapplied, where the amount should be no more than 3 times.ย Be sure to follow the instructions for use.

Can preemergence herbicides be added to the sprinkler system?

One way to apply pre-emergent herbicide is with a lawn spreader. You want to make sure the product is evenly distributed throughout your lawn. If you have a large lawn, it may be easier to add herbicide to a sprinkler system. You have to be careful though, because the herbicide itself can damage your irrigation system as well as harm the ecosystem. Therefore, it is important to use only organic, safe pre-emergents in sprinklers.

Best preemergence herbicides

Scotts WeedEx Prevent with Halts – Crabgrass Preventer, Pre-Emergent Weed

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Looking for an effective way to control algae, crabgrass, scale, and other weeds? Scotts WeedEx Prevent with Halts is your solution! This pre-emergent weed preventer is perfect for virtually all types of grasses, and it’s suitable for preventive purposes. Snow, rain, and frost won’t affect its effectiveness, so you can rest assured your lawn will stay weed-free all season long. 5,000 square feet of coverage makes this product ideal for large lawns. Don’t let weeds ruin your lawn – trust Scotts WeedEx Prevent with Halts to keep them under control!


  • Effective in controlling algae, crabgrass, scale, foxtail and other weeds;
  • Treatment area is 5,000 sq. ft;
  • Suitable for virtually all types of grasses;
  • Suitable for preventive purposes;
  • Snow, rain and frost do not affect its effectiveness.

Select Source Triad QC Select – 3-Way Herbicide with Quinclorac

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If you’re looking for a powerful herbicide that can handle even the toughest weeds, look no further than Select Source Triad QC Select. This three-way herbicide contains Hinclorac, making it highly effective against difficult weeds. It’s also suitable for residential and non-rural applications, making it ideal for use in parks, golf courses and other public areas. In addition, Select Source Triad QC Select will help kill crabgrass, even if it has sprouted up to 5 stem shoots. Plus, the convenient bottle shape makes it easy to use and apply. So don’t wait any longer, switch to Select Source Triad QC Select today!


  • Includes 3 active ingredients;
  • Effective in controlling difficult weeds;
  • Suitable for use in residential and non-rural areas, parks, golf lawns;
  • Will help kill crabgrass, even if it has sprouted up to 5 stem shoots;
  • Convenient bottle shape.

Ortho GroundClear Weed & Grass Killer2: Concentrate, Quickly Kills Crabgrass

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Consider Ortho GroundClear Weed & Grass Killer2. This concentrated blend is designed to kill weeds quickly and is effective against crabgrass, dandelions and other common lawn weeds. It is also safe for use in yards and landscaped areas and is listed as organic. Don’t let weeds take over your yard – make Ortho GroundClear Weed & Grass Killer2 your primary weed control product.

The product fights not only the seeds, but also the crabgrass that has already grown to small growth. It kills the weed in 2.5 hours after spraying. 1 bottle of concentrate is enough to treat up to 600 square feet of area.


  • Concentrated mixture;
  • Fast weed control;
  • Effective control of crabgrass, dandelions and other weeds;
  • Suitable for use in yards and landscaped lawns;
  • Is on the list of organic remedies;
  • Suitable for use at any time of year.

ITS Supply T-Zone Turf Herbicide – 1 Quart

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T-Zone lawn herbicide from ITS Supply. This is one of the best lawn herbicides that is ideal for both residential and commercial use, and is especially effective against yellow walnut and other broadleaf weeds. It’s also fast-acting, so you’ll see results in as little as a week! The convenient bottle shape makes ITS Supply T-Zone Lawn Herbicide easy to use and store. What’s more, it can even be used in cold weather! Plus, it’s one of the few selective pre-emergent weeds that fights different types of vegetation without harming your grass.


  • Effective against yellow walnut and other weeds as well as broadleaf species;
  • Suitable for golf courses, residential areas and commercial areas;
  • Fast action;
  • Convenient bottle shape;
  • Suitable for use in cold weather;
  • Complete killing of weeds occurs on day 7 or n 14 after treatment.

Roundup Concentrate Max Control 365 Vegetation Killer

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An incredibly effective weed killer that can handle both pre-emergent weeds and established weeds, Roundup Concentrate Max Control 365 Vegetation Killer is the best weed killer on the market. This concentrated product is ideal for use in asphalt cracks, seams between tiles and other hard-to-reach areas. It also comes with a 12-month warranty for guaranteed weed control.

The product is ideal for weed control, even in driveways and gravel areas. The product gives visible results in as little as 12 hours. After application, it can safely withstand the onset of rain, but provided that 30 minutes have elapsed since it was sprayed. Since the herbicide is presented as a concentrate, it is ideal for treating large areas.


  • A powerful weed killer;
  • Dual action: suitable for pre-emergent weeds and those that have already partially germinated;
  • Concentrated product;
  • Ideal for use in asphalt cracks, joints between tiles and other hard-to-reach areas;
  • Guaranteed weed control for 12 months.

Southern Ag Amine 2,4-D WEED KILLER, 32oz – Quart

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Do you want a versatile and selective weed killer that is also economical? Then you need Southern Ag Amine 2,4-D WEED KILLER. This powerful product is ideal for treating pre-emergent and mature weeds in pastures, lawns, golf courses, fields and parks. It comes in a convenient 32 oz. package and can cover up to 1,000 square feet, making it ideal for treating small to medium areas. Southern Ag Amine 2,4-D WEED KILLER is also great for use in a pump sprayer.

The herbicide is effective in controlling broadleaf weeds, which are harder to treat and eventually germinate. The convenient spray form of the product helps to save it.ย Be sure to follow the instructions in order to kill the weeds more effectively. After all, the instructions for pre-emergent and mature weed control will be different, where in the second case more product will be needed than in the first.


  • Versatile product: suitable for treatment of pre-emergent weeds and mature weeds;
  • Selective type of product, therefore safer;
  • Suitable for treating weeds in pastures, lawns, golf courses, fields and parks;
  • Economical consumption;
  • Consumption up to 1,000 sq. ft;
  • Ideal for sprayer;
  • Effectively fights broadleaf weeds.

The Andersons Barricade Professional-Grade Granular Pre-Emergent

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Andersons Barricade Professional-Grade granular pre-emergence fertilizer can provide an effective way to control weeds. This professional product is ideal for effective control of a variety of grasses and broadleaf weeds. It comes in convenient pellets that are easy to use and covers up to 12,880 square feet, making it ideal for treating large areas. Best of all, it contains the active ingredient prodiamine, which is known for its effectiveness in controlling more than 30 different types of weeds. So why wait? Purchase Andersons Barricade Professional-Grade Granular Preplant Treatment today and enjoy better weed control tomorrow!

The product is suitable for early spring or fall tillage. The safe formula does not harm already mature plants, so you don’t have to worry about their safety.


  • Handy pellets;
  • Professional product for effective weed control;
  • Suitable for treating areas up to 12,880 square feet;
  • Contains the active ingredient prodiamine;
  • Effective in controlling more than 30 different grasses and broadleaf weeds;
  • Better weed control.

Hi-Yield (33430) Atrazine Weed Killer (32 oz)

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Looking for an effective weed killer to help keep your garden or lawn looking pristine? Then check out Hi-Yield Atrazine Weed Killer. This good product is designed to kill a wide range of weeds, including those that are already in the growing season. It is ideal for pre-treating weeds or for spot treatment of specific areas. It’s also easy to use thanks to the clear instructions on the bottle. Just mix it with water and apply to the affected area. You will see results in no time!

Keep in mind that on some weed species, you don’t need to mix the product with water, but apply it right away to increase the effectiveness. But this point should only be performed by professional gardeners, otherwise it is easy to harm the soil and other plants.


  • Effective for pre-treatment of weeds, or their slight germination;
  • Suitable for killing a wide list of weeds;
  • Designed to treat an area of 3,720 square feet;
  • Convenient and clear instructions for use listed on the bottle;
  • Effective Action.

Preen 246422 Extended Control Weed Preventer – 13.75 lb

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Preen 246422 Extended Control Weed Preventer – 13.75 lbs is a convenient and functional set of 2 tools for enhanced weed control. Suitable for treating an area of 2,245 square feet, this weed preventer also comes with a plant feeder for additional coverage of 2,560 square feet. With the included applicator, this product successfully blocks weeds for up to 6 months and promotes convenient area treatments.

The pre-emergent herbicide is suitable for treating garden beds, around groundcover trees, plants and shrubs. You do not need to worry about your already rooted plants that grow on your plot, because the product will not harm them. Remember that the product should not be used on vegetable gardens and orchards where fruit trees, berry bushes or vegetables are growing. The product will also be harmful to flower seeds.


  • Convenient and functional set of 2 tools;
  • Advanced weed control;
  • Suitable for treating an area of 2,245 square feet;
  • Included in the kit is a plant feeder for an area of 2,560 square feet;
  • Blocks weeds for up to 6 months;
  • Includes applicator;
  • Balanced fertilizer.


All things considered, we believe that the best pre emergent herbicide for your lawn is the one that best meets your specific needs. Whichever product you choose, be sure to carefully read and follow all instructions on the label before use. By taking these simple precautions, you can help ensure that your lawn stays healthy and free of unwanted weeds

Nicolas Wayne

Gardening and lawn care enthusiast

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