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Best Weed Killer For St Augustine And Bermuda Grass (2024 Update)

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If you're looking for a reliable weed killer to get rid of pesky weeds in your St. Augustine or Bermuda grass, there are a few factors you need to consider before making a purchase. First and foremost, you need to find a product that is effective in killing the specific types of weeds that are invading your lawn. Not all weed killers work the same way, and some may be better suited for targeting certain types of weeds. Additionally, you'll want to consider the safety of the product for your grass and surrounding plants, as well as any potential environmental impact.

When searching for the best weed killer for St. Augustine and Bermuda grass, it's important to do your research and read reviews from other lawn care enthusiasts. Look for a product that offers a targeted approach, meaning it is designed specifically for the weeds you are trying to eliminate. You'll also want to choose a weed killer that is safe for your grass and any nearby plants, and won't harm the environment.

Are you tired of weeding by hand, or feeling frustrated that your lawn doesn't look as healthy as it should? If so, it's time to consider investing in a quality weed killer. With the right product, you can eliminate weeds safely and effectively, so that your St. Augustine or Bermuda grass can thrive. Keep in mind that not all weed killers are created equal, so be sure to choose one that is designed to target the particular weeds you are dealing with. By taking the time to research, you can discover the best weed killer for your lawn and enjoy a beautiful, healthy yard.

10 Best Weed Killer For St Augustine And Bermuda Grass

# Product Image Product Name Product Notes Check Price
1
This product is ideal for fertilizing grass and killing weeds in an area up to 5,000 square feet.
2
The product is ideal for killing garden grass and weeds.
3
This product is ideal for preventing weed growth while fertilizing lawns up to 10,000 sq ft.
4
It is ideal for pre and post-emergent weed control in lawns and turf grasses.
5
It is ideal for controlling weeds on large lawns and plots.
6
The product is ideal for eliminating weeds and feeding southern lawns to promote healthy growth.
7
The product is ideal for killing weeds in lawns in Southern regions, using a convenient wand for extended reach.
8
The product is ideal for maintaining healthy Southern lawns by controlling weeds and promoting growth.
9
Ideal for controlling weeds and grasses in various residential, commercial and industrial areas.
10
Bayer Celsius WG 10 oz is ideal for controlling weeds in warm-season turfgrass with quick results and long-lasting effects.
This product is ideal for fertilizing grass and killing weeds in an area up to 5,000 square feet.
The product is ideal for killing garden grass and weeds.
This product is ideal for preventing weed growth while fertilizing lawns up to 10,000 sq ft.
It is ideal for pre and post-emergent weed control in lawns and turf grasses.
It is ideal for controlling weeds on large lawns and plots.
The product is ideal for eliminating weeds and feeding southern lawns to promote healthy growth.
The product is ideal for killing weeds in lawns in Southern regions, using a convenient wand for extended reach.
The product is ideal for maintaining healthy Southern lawns by controlling weeds and promoting growth.
Ideal for controlling weeds and grasses in various residential, commercial and industrial areas.
Bayer Celsius WG 10 oz is ideal for controlling weeds in warm-season turfgrass with quick results and long-lasting effects.

1. Jonathan Green (12344) Green-Up Weed & Feed – 21-0-3 Grass Fertilizer & Weed Killer (5,000 Sq. Ft.)

Introducing the lawn fertilizer that promises to keep your lawn looking lush and green for up to 3 months – Green-Up Weed & Feed. Boasting an impressive analysis of 21-0-3, this fertilizer is designed to provide a gradual and consistent release of nutrients to promote healthy growth. However, it cannot be used simultaneously when seeding a new lawn.

Green-Up Weed & Feed is not just a fertilizer, but it also functions as a weed killer that effectively controls over 250 broadleaf weeds. Say goodbye to dandelions, chickweed, clover, wild onions, thistle, and even poison ivy. This product kills weeds down to the root for complete weed control.

One of the key features of Green-Up Weed & Feed is its fine particle size, perfect for weed control and feeding action. The fine particles ensure that desirable grass receives the nutrients it needs for a longer period while weeds gradually disappear from your lawn.

Application of Green-Up Weed & Feed is a breeze. It can be applied using a rotary, drop, or hand-held spreader. For best results, apply when the weeds are actively growing. This product ensures complete coverage, with a 15 lb bag covering up to 5,000 sq. ft.

The best time to apply Green-Up Weed & Feed is during late spring or early fall. This ensures that your lawn gets the nutrients it needs during the peak growing season without any interference from the cold winter months.

2. Ortho 0438580 Grass B Gon Garden Grass Killer Ready-To-Use, 24-Ounce (2)

Looking for a reliable solution to get rid of weedy grasses without damaging your beloved ornamental plants? Look no further than this powerful herbicide, designed to selectively target and eliminate unwanted grassy weeds while leaving your other plants unharmed.

With its versatile formula, this herbicide can be used in and around a variety of plants, including ornamentals, groundcovers, evergreens, shrubs, shade trees, and non-bearing tree crops and vines. Whether you need to eliminate annual or perennial grassy weeds, this product has you covered.

When used as directed, this herbicide is completely safe for your listed landscape plants. Say goodbye to unsightly weeds and hello to a beautiful, healthy garden with this effective and easy-to-use solution.

This package includes two bottles of this powerful herbicide, so you can tackle even the toughest weed problems with ease. Don't let weeds take over your garden – trust this reliable herbicide to keep your plants healthy and beautiful all season long.

3. Andersons Weed Control & Fertilizer – 10k Coverage

The Andersons Dimension with 18-0-4 fertilizer is a high-quality, professional-grade pre-emergent weed and feed product that is designed to keep your lawn looking its best. Not only does it provide season-long control of annual grasses and broadleaf weeds in established lawns, but it also feeds the turf, giving it the nutrients it needs to thrive.

One of the key benefits of this product is its effectiveness in controlling crabgrass. It can be applied both prior to crabgrass emergence and during the early stages of crabgrass growth, making it an ideal choice for anyone looking to keep this pesky weed at bay.

The Andersons Dimension contains .164% of the active ingredient dithiopyr, which is a powerful herbicide that targets weeds without harming your lawn. It can be applied in the spring, as well as in late summer and early fall, providing you with year-round protection against unwanted weeds.

Another great feature of this product is that it is safe for use on a wide variety of grasses, including Kentucky bluegrass, bentgrass, fescue, ryegrass, bahia, bermuda, carpetgrass, centipede, St. Augustine, zoysia, buffalograss, and kikuyugrass. This means that no matter what type of grass you have in your lawn, you can use The Andersons Dimension with confidence.

The small particle size of the granules allows for more particles per square inch and more uniform coverage, ensuring that every inch of your lawn is protected against weeds. Additionally, DG Technology allows the granules to break down into thousands of microparticles with irrigation or rainfall, moving weed control and nutrients directly into the soil where they are needed most.

4. Weedx – Concentrated Pre & Post-Emergent Weed Killer

Liquid Harvest Mesotrione is a highly effective herbicide that can prevent crabgrass seed germination and eliminate broadleaf weeds such as dandelions and clovers on contact. It's a fantastic product that allows cool season turfgrass to grow without any intrusion from weed species.

Containing 40% active ingredients, Liquid Harvest Mesotrione works by inhibiting photosynthesis in susceptible plant species. The herbicide is absorbed by plants through roots, shoots, and leaves, and then distributed throughout the plant. It targets 46 broadleaf species of weed and grass, including barnyard grass, carpetweed, chickweed, clover, crabgrass, foxtail, goosegrass, henbit, yellow nutsedge, purslane, thistle, wild carrot, and many others.

This product is suitable for use in Kentucky bluegrass, centipede grass, buffalo grass, tall fescue, perennial ryegrass, fine fescue, and St. Augustine grass (grown for sod only). However, it is not recommended to be applied on bentgrass, Poa annua, kikuyugrass, zoysiagrass, seashore paspalum, or bermudagrass, except when the bermudagrass is still dormant. If the bermuda is only semi-dormant, there may be whitening and damage to the bermuda.

To use Liquid Harvest Mesotrione, add 4-8 oz. per 30 gallons of water per acre and use a surfactant to increase effectiveness. It's important to read the label for full instructions. This weed killer is not like others as it prevents photosynthesis in plants, and it starts working immediately after absorption. However, it may take up to 2-3 weeks before full death occurs on weeds.

To ensure the effectiveness of Liquid Harvest Mesotrione, activate it with water. If rainfall hasn't occurred within 10 days of application, water the area with 0.15 inches of water. Overall, Liquid Harvest Mesotrione is an effective herbicide for those who want a weed-free environment for their cool season turfgrass.

5. Spectracide Large Plot Weed Stop For Lawns Concentrate, 1 Gallon

Looking for a powerful weed killer that can eliminate even the toughest weeds? Look no further than this top-of-the-line product.

With the ability to kill over 200 types of weeds, this weed killer is a must-have for anyone looking to maintain a pristine lawn or garden. But what sets it apart from other weed killers on the market is its ability to not only kill weeds above ground but to also eliminate their roots, ensuring that they won't grow back.

One of the best things about this weed killer is that it's rainproof in just a few hours, meaning you don't have to worry about it being washed away in a sudden downpour. And with the ability to treat up to 32,000 square feet of Northern grasses or 42,500 square feet of Southern grasses, you can rest assured that you'll be able to cover even the largest lawns or gardens with ease.

So why settle for a subpar weed killer that can't get the job done? Invest in this top-rated product and enjoy a weed-free yard all season long.

6. Scotts Turf Builder Bonus S Southern Weed & Feed2, 34.48 Lbs.

The product offered is a highly effective weed killer that targets and eradicates a range of lawn weeds, including dollarweed, clover, black medic, blue toadflax, buckhorn, burclover, Carolina geranium, chickweed, and dandelions. It is specifically designed to be used on St. Augustinegrass (including Floratam), Centipede, Zoysia, and Carpetgrass lawns, but it is not recommended for use on Bermudagrass.

Apart from its weed-killing properties, this product also provides a bonus benefit of fertilizing your lawn. It contains essential nutrients that help to green your lawn, promote strong grass roots, and prevent future weed growth.

To use, simply apply the product as directed on the packaging. This product is formulated to work quickly, so you can expect to see results within a few days. With regular use, you can enjoy a beautiful, weed-free lawn that is healthy, lush, and thriving.

7. Southern-Ready Weed Killer With Extended Wand – 1 Gal.

The Ready-to-Use All-in-One Weed Killer for Lawns is an effective solution to eliminate pesky weeds without damaging your lawn. When used as directed, it guarantees to kill weeds while keeping your lawn healthy. This product is designed to work on Southern grasses, including St. Augustine (including Floratam), Bermudagrass, Centipedegrass, and Bahiagrass.

This powerful formula targets 93 types of weeds, including dollarweed, dandelion, clover, and yellow nutsedge. For a complete list of targeted weeds, refer to the inside booklet. Upon application, it starts working immediately and is rainproof in just 4 hours.

The Ready-to-Use All-in-One Weed Killer for Lawns is incredibly easy to use. Simply apply the product to the affected areas, and let it do its job. This weed killer is an all-in-one solution that eliminates the need for additional products or tools.

With this product, you can be confident that you're using a safe and effective weed killer on your lawn. Say goodbye to unsightly weeds and hello to a beautiful, healthy lawn with the Ready-to-Use All-in-One Weed Killer for Lawns.

8. Bioadvanced 3-In-1 Weed And Feed For Southern Lawns, Granules, 12.5 Lb

The BioAdvanced Weed and Feed is a top-quality lawn care product that is specially designed for use on Southern lawns. With its advanced formula, this product provides up to six months of protection against a wide range of broadleaf, grassy weeds, and crabgrass. It is a highly effective weed killer that eliminates pesky weeds like Dandelion, Dollarweed, and Clover from your lawn.

Apart from its powerful weed-killing abilities, the BioAdvanced Weed and Feed also acts as a lawn fertilizer that feeds, greens, and strengthens your lawn. This product is equipped with essential nutrients that promote healthy growth and development of your grass, resulting in a lush, vibrant, and well-maintained lawn.

The BioAdvanced Weed and Feed is easy to use and can be applied using a spreader. It has been extensively tested and proven to deliver outstanding results, making it a trusted choice among lawn care professionals and homeowners alike.

With this product, you can rest assured that your Southern lawn will be protected from weeds and nourished with the essential nutrients it needs to thrive. Say goodbye to unsightly weeds and hello to a healthy, beautiful, and well-maintained lawn with the BioAdvanced Weed and Feed.

9. Bayer Celsius Wg 10 Oz

The product being reviewed boasts an exceptional performance when it comes to controlling difficult-to-manage weeds and grasses. It comes in a convenient application window that does not have any high temperature restrictions, making it an ideal choice for all types of weather. Its wettable granule formulation makes it easy to use, even for those with little to no experience in weed control.

The product is capable of controlling a wide range of pests, including American burnweed, chamberbitter, common purslane, dollarweed, Florida betony, Florida pusley, lawn burweed, Lespedeza, prostrate spurge, spotted spurge, Virginia buttonweed, Bull paspalum, carpetgrass, Dallis grass (suppression), doveweed, and large crabgrass.

Whether you're a professional landscaper or simply looking to maintain a pristine lawn, this product is an excellent choice for effective weed control. Its easy-to-use formulation and wide range of pest control capabilities make it an ideal solution for anyone in need of a reliable weed control product.

Best Weed Killer For St Augustine And Bermuda Grass FAQs

Are there any organic or natural weed killers that work well on these grasses?

Yes, there are several organic and natural weed killers that can be effective in controlling grass weeds in your lawn. One of the most popular natural weed killers is vinegar, which can be used to kill both grass and broadleaf weeds. You can mix vinegar with water and a small amount of dish soap and spray it directly onto the weeds. Another effective natural weed killer is corn gluten meal, which is a byproduct of corn processing. Corn gluten meal can be spread over your lawn and works by preventing weed seeds from germinating.

Other natural weed killers include boiling water, which can be poured directly onto weeds to kill them, and essential oils like clove oil, which can be mixed with water and sprayed onto weeds. It's important to note that natural weed killers may not be as effective as chemical herbicides, and may need to be applied more frequently. Additionally, some natural weed killers may also kill desirable plants, so it's important to use them with caution.

Are there any specific brands of weed killers that are better for st augustine or bermuda grass?

Yes, there are specific brands of weed killers that are better for St. Augustine or Bermuda grass. For St. Augustine grass, you should look for herbicides that contain atrazine as the active ingredient. Atrazine is very effective in controlling broadleaf and grassy weeds that grow in St. Augustine grass lawns. Some recommended brands for St. Augustine grass include Southern Ag Atrazine Weed Killer and Spectracide Weed Stop for Lawns.

For Bermuda grass, you should look for herbicides that contain glyphosate or a combination of glyphosate and diquat as the active ingredient. Glyphosate is very effective in controlling both broadleaf and grassy weeds that grow in Bermuda grass lawns. Some recommended brands for Bermuda grass include Roundup for Lawns and Compare-N-Save Concentrate Grass and Weed Killer.

It is important to read the labels carefully and follow the instructions for application and safety precautions. Also, keep in mind that some weed killers can harm other plants and trees nearby, so be careful when applying them.

Can I use a pre-emergent herbicide to prevent weeds from growing in my st augustine or bermuda grass?

Yes, you can use a pre-emergent herbicide to prevent weeds from growing in your St. Augustine or Bermuda grass. Pre-emergent herbicides work by preventing the germination of weed seeds. They are typically applied in the spring and fall before weed seeds have a chance to grow. It is important to note that pre-emergent herbicides can also prevent the germination of desirable grasses, so it is important to follow the instructions carefully and apply the herbicide at the appropriate time. Additionally, pre-emergent herbicides do not kill existing weeds, so it is important to remove any existing weeds before applying the herbicide. Overall, using a pre-emergent herbicide can be an effective way to prevent weeds from growing in your St. Augustine or Bermuda grass, but it is important to use it correctly and at the appropriate time.

Can I use a weed and feed product on my st augustine or bermuda grass?

It depends on the specific weed and feed product and the type of grass you have. Some weed and feed products are not suitable for St. Augustine or Bermuda grass and can cause damage to the lawn. It is important to read the label carefully and ensure that the product is labeled for use on your specific type of grass.

Additionally, it is also important to consider the timing of application. Weed and feed products should be applied during the appropriate season for your region and when the grass is actively growing. Applying the product at the wrong time can also cause damage to the lawn.

To ensure the best results, it is recommended to consult with a lawn care professional or your local garden center for advice on the best weed and feed product for your specific lawn type and the proper timing for application.

How long does it take for weed killer to start working on my lawn?

The time it takes for weed killer to start working on your lawn will depend on the type of weed killer you are using. Generally, most weed killers take between 24-48 hours to start working effectively. However, some weed killers might take longer, especially if they are applied during colder temperatures or on particularly tough weeds.

It is important to follow the instructions on the weed killer product label carefully to ensure that you are applying it correctly and at the appropriate time. You may also need to reapply the weed killer after a few weeks to ensure that any remaining weeds are killed.

In addition to using weed killer, it is important to maintain a regular lawn care routine to prevent weeds from growing in the first place. This includes regular mowing, watering, and fertilizing. By taking a proactive approach to lawn care, you can help keep your lawn healthy and weed-free.

How often should I apply weed killer to my lawn to keep it weed-free?

The frequency of applying weed killer to your lawn depends on the type of weed killer you are using, the type of weeds you are trying to eliminate, and the climate of your area. Generally, it is recommended to apply weed killer to your lawn every 4-6 weeks during the growing season, which is typically spring and summer. However, if your lawn is heavily infested with weeds, you may need to apply the weed killer more frequently. It is important to follow the instructions on the label carefully and not to over-apply the weed killer as it can harm desirable plants in your lawn. Additionally, it is important to note that using a weed killer alone may not be enough to keep your lawn completely weed-free. It is also important to maintain proper lawn care practices, such as regular mowing and watering, and overseeding to promote healthy grass growth and prevent weeds from taking over.

What is the best time of year to apply weed killer to my lawn?

The best time of year to apply weed killer to your lawn depends on the type of weeds you are trying to control. In general, the most effective time to apply weed killer is during the growing season of the weeds. For example, if you are dealing with annual weeds, it is best to apply weed killer in the spring or early summer before they have a chance to flower and set seed. If you are dealing with perennial weeds, it is best to apply weed killer in the fall when the weeds are actively growing and preparing for winter.

It is important to note that weather conditions can also play a role in the effectiveness of weed killer. Ideally, the weather should be warm and dry for a few days after application to allow the weed killer to be absorbed by the weeds. It is also important to follow the instructions on the weed killer product carefully to ensure proper application and safety. If you are unsure about the best time to apply weed killer to your lawn, it is recommended to consult with a lawn care professional for advice.

What is the best way to apply weed killer to ensure maximum effectiveness?

The best way to apply weed killer depends on the type of weed killer you are using. However, there are some general guidelines that can help ensure maximum effectiveness.

First, it is important to apply weed killer on a calm day with no wind, as wind can cause the spray to drift and damage nearby plants.

Second, ensure the weeds are dry before applying the weed killer. Wet weeds can prevent the weed killer from adhering properly.

Third, apply the weed killer evenly and thoroughly, making sure to cover all parts of the weed, including the leaves, stem, and roots.

Fourth, follow the instructions on the label carefully, including the recommended amount to use and the waiting period before watering or mowing the area.

Finally, take precautions to protect yourself, such as wearing gloves and a mask, and keep children and pets away from the area until the weed killer has dried.

Overall, by following these guidelines and the instructions on the label, you can ensure that your weed killer is applied effectively and safely.

What is the most effective weed killer for st augustine and bermuda grass?

When it comes to weed killers for St. Augustine and Bermuda grass, the most effective option is a selective herbicide that targets broadleaf weeds without harming the turfgrass. One popular choice is a product containing the active ingredient 2,4-D, such as Ortho Weed B Gon Weed Killer for Lawns. This herbicide is effective against many common broadleaf weeds, including dandelions, clover, and chickweed, while leaving the grass unharmed.

Another option is a product containing the active ingredient atrazine, such as Southern Ag Atrazine Weed Killer. This herbicide is also selective and effective against a wide range of broadleaf weeds, as well as some grassy weeds like crabgrass.

It is important to carefully follow the instructions on any herbicide product, including the recommended application rate and timing, to ensure the best results and avoid damage to the turfgrass. Additionally, some states have restrictions on the use of certain herbicides, so be sure to check local regulations before applying any product.

Will a broad-spectrum herbicide harm my st augustine or bermuda grass?

Using a broad-spectrum herbicide can be harmful to both St. Augustine and Bermuda grass if not used correctly. These herbicides are designed to kill a wide range of weeds and plants, which means they can affect your lawn as well. However, some herbicides are labeled as safe for use on certain types of grass, including St. Augustine and Bermuda grass.

Before using any herbicide on your lawn, it's essential to read the label carefully and ensure that it's safe for use on your type of grass. You should also follow the instructions provided on the label, including the correct application rate and timing. Applying too much herbicide or using it at the wrong time can damage your lawn or even kill it.

If you're unsure about which herbicide to use or how to use it, it's best to consult with a lawn care professional or your local agricultural extension office. They can provide you with specific recommendations and advice on how to use herbicides safely and effectively without harming your St. Augustine or Bermuda grass.

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