Best Post Emergent Weed Killer For Lawns (2024 Update)
If you’re looking for a solution to get rid of weeds on your lawn, post-emergent weed killers are the way to go. But with so many options available, it can be overwhelming to choose the right one. Before buying a weed killer, there are several factors to consider, such as the growth stage of the weeds, the type of weeds, and the type of grass on your lawn.
First, consider the growth stage of the weeds. Post-emergent weed killers work best on young and actively growing weeds. If the weeds on your lawn have fully matured and produced seeds, a post-emergent spray may not be effective. It’s important to read the labels carefully to ensure that the product is intended for the specific types of weeds you are targeting.
Secondly, take into account the type of weeds on your lawn. Different post-emergent weed killers are formulated to target different types of weeds. Some target broadleaf weeds, while others are effective against crabgrass and other grassy weeds. Again, reading the labels carefully will ensure that you are purchasing a product that targets the weeds on your lawn.
Lastly, some questions to consider before purchasing a weed killer are: Is the product safe for pets and children? Will it harm beneficial plants and organisms in your yard? How long does it take to see results? Remember to always follow the instructions on the label carefully and take the necessary precautions when using any type of chemical product on your lawn. By considering these factors, you can choose the best post-emergent weed killer for your lawn.
10 Best Post Emergent Weed Killer For Lawns
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Ideal for post-emergent control of broadleaf weeds, such as dandelion, clover and chickweed in turfgrasses.
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The product is ideal for controlling post-emergent broadleaf weeds in lawns and turfgrass areas.
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3
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Ideal for post-emergent broadleaf weed control with a dependable 4-way combination herbicide that compares to T Zone.
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4
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This product is ideal for killing both pre and post-emergent weeds on lawns and turf grasses.
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5
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Ideal for killing weeds and crabgrass in lawns, providing a convenient all-in-one solution.
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6
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The product is ideal for post-emergent weed control in lawns and landscapes.
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7
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The selective herbicide is ideal for controlling weeds and promoting healthy growth of desired plants.
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8
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The product is ideal for controlling post-emergent weeds selectively and effectively in lawns, turfgrass, and other non-crop areas.
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9
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The product is ideal for controlling major broadleaf weeds after they have emerged from the ground.
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10
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Ideal for controlling and eliminating weeds that grow in turf or lawns without harming the surrounding grass.
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1. Nufarm Triplet Sf Selective Herbicide, Post-Emergent Broadleaf Herbicide, 32 Oz
This product is a highly effective weed control solution that is specially designed to tackle a variety of broadleaf weeds. It is made up of a powerful combination of three selective herbicides that work together to provide optimal results.
One of the key advantages of this product is its flexible application rates, which allows users to adjust the amount of product used depending on the severity of the weed problem. Higher rates can be used for particularly stubborn weeds, while lower rates can be used for regular turf maintenance.
This weed control solution is suitable for use on both cool and warm season turf, making it a versatile option for a wide range of climates and conditions. Additionally, this product is labeled for sod farm usage, making it a reliable choice for professional landscapers and other commercial applications.
With its powerful ingredients and flexible application rates, this weed control product is an excellent choice for anyone looking to maintain a healthy and beautiful lawn. Its effectiveness is backed by extensive research and testing, ensuring that users can trust it to deliver reliable results every time.
2. Triad Tz Broadleaf Herbicide – Quart
Triad TZ is a highly effective post-emergent herbicide that provides rapid and efficient weed control for some of the toughest broadleaf weeds in turfgrass. It is designed to control a variety of weeds including dandelion, spurge, white clover, plantains, ground ivy, Virginia buttonweed, wild violet, and yellow nutsedge.
This herbicide contains four active ingredients: 2,4-D, Dicamba, Triclopyr, and Sulfentrazone. These ingredients work together to provide a powerful herbicidal effect that quickly stops weed growth within hours of application. The weed control effects may be seen within a few hours to a few days after application, and weed death occurs within 1 to 4 weeks after application depending on the application rate, sensitivity of the weed, and environmental conditions.
Triad TZ is designed for use in a variety of settings including residential lawns, athletic fields, golf courses, parks, industrial and institutional buildings, commercial sod production, fencerows, farmyards, and utility rights-of-way. It is easy to apply and can be used on a variety of surfaces.
3. Mesotrione Weed Control Bundle – 8oz Concentrate & Spray
Liquid Harvest Mesotrione is a highly effective herbicide that prevents the germination of crabgrass seeds and kills broadleaf weeds upon contact while allowing certain cool season turfgrass to grow weed-free. It contains 40% active ingredient that inhibits photosynthesis in susceptible plant species and is absorbed by the plants through roots, shoots, and leaves, after which it is distributed throughout the plant. This herbicide targets 46 broadleaf species of weed and grass, including Barnyard grass, Carpetweed, Chickweed, Clover, Crabgrass (large & smooth), Dandelion, Foxtail, Goosegrass, Henbit, Yellow Nutsedge, Purslane, Thistle, Wild Carrot, and others.
It is specially designed for use in Kentucky Bluegrass, Centipede grass, Buffalo grass, Tall Fescue, Perennial Ryegrass, Fine Fescue, St. Augustine Grass (grown for sod only). However, it should not be applied to Bentgrass, Poa annua, kikuyugrass, zoysiagrass, seashore paspalum, or bermudagrass. Mesotrione can only be used on dormant bermudagrass when trying to remove weeds or target grasses from it. If the bermuda is only semi-dormant, it may result in whitening and damage to the bermuda.
To use Liquid Harvest Meso, mix 4-8 oz. per 30 gallons of water per acre, and use a surfactant to increase the herbicide's effectiveness. It is essential to read the label for full instructions before use. Liquid Harvest Lazer Blue can be mixed with herbicides, fungicides, pesticides, and fertilizers and easily marks grass and lawns. It is 100% non-toxic, non-permanent, and non-staining.
Mesotrione works by preventing photosynthesis in plants and starts working immediately upon absorption. However, it may take up to 2-3 weeks before full death occurs on your weeds. It must be activated by water, so if rainfall hasn't occurred within ten days of application, water the area with 0.15 inches of water.
4. Bioadvanced All-In-One Lawn Weed And Crabgrass Killer I, Concentrate, 40 Oz
The BioAdvanced All-in-One Formula boasts of a powerful solution that kills various lawn weeds and crabgrass while keeping the lawn unharmed. With this product, weed killing is made easy and efficient, as it effectively eliminates over 200 broadleaf weeds such as dandelion and clover, as well as crabgrass.
One of the unique features of this product is its SmartTrack Marker, which is a non-staining red marker that shows treated weeds and fades away with sunlight. This makes it easier to keep track of the treated areas and avoid over-application. In addition, the product provides rainproof protection in just one hour, ensuring that the formula remains effective even after exposure to water.
Whether you are a seasoned gardener or a beginner, the BioAdvanced All-in-One Formula is a reliable solution to keep your lawn healthy and weed-free. Its all-in-one formula guarantees efficient weed killing without any damage to your lawn. So, say goodbye to pesky weeds and crabgrass and enjoy a beautiful, healthy lawn all year round with BioAdvanced All-in-One Formula.
5. Celsius Wg – 0.226 Oz Easy Mix Packet-Post Emerge Weed Control
This product is an easy-to-use, professional-grade weed killer that does not require any measuring. With this product, users can simply mix the packet with water and go. It is designed to kill dandelions and 120 other types of weeds, while being safe to use on St. Augustine and many other grass types.
This weed killer is safe to use in hotter temperatures, and will not burn grass. Users do not need to purchase large bottles of weed killer, as this product comes in convenient, single-use packets. It is also safe to use around pets and children.
6. Blindside Herbicide Wdg Fmc Selective Herbicides 8 Oz Bottle
Introducing a powerful herbicide for your lawn care needs – Sulfentrazone with 60% Metsulfuron-methyl. This product comes in a convenient tip and measure package that includes a dosing chamber for accurate dispensing.
Ideal for use in various turf settings, including residential, commercial, and institutional lawns, athletic fields, commercial sod farms, golf courses (fairways and roughs), and other non-crop sites, this herbicide is effective in controlling a wide range of broadleaf weeds and sedges.
Sulfentrazone with 60% Metsulfuron-methyl is formulated for use on both cool-season grasses, such as Kentucky Bluegrass and Tall Fescue, and warm-season grasses, including Bermuda grass and hybrids, Centipede grass, St. Augustine grass, and Zoysia grass.
This herbicide is a reliable solution for over 70 types of broadleaf weeds and sedges, including Barnyardgrass, Black medic, Chickweed, Clover, Crabgrass (large), and many others.
With its precise dosing chamber, Sulfentrazone with 60% Metsulfuron-methyl guarantees accurate and consistent application, ensuring your lawn is free from pesky weeds and sedges. So, give your lawn the care it deserves with this effective herbicide.
7. Lesco Three-Way Selective Post Emergent Liquid Herbicide (1 Gallon)
Looking for a fast and effective solution to control broadleaf weeds in your lawn or garden? Look no further than this professional strength broadleaf weed control product. Designed to eliminate most types of broadleaf weeds, this product is a must-have for any homeowner or gardener looking to maintain a beautiful and healthy landscape.
With its fast-acting formula, this broadleaf weed control product is able to quickly and efficiently target and eliminate weeds, leaving your lawn or garden looking pristine and free of unwanted growth. Whether you're dealing with dandelions, clover, or other common broadleaf weeds, this product is up to the task.
Easy to use, this broadleaf weed control product requires no special equipment or expertise to apply. Simply follow the instructions on the label to ensure that you are applying the product correctly and safely. With its user-friendly design, this product is suitable for both novice and experienced gardeners alike.
So why wait? If you're in need of a fast and effective solution to control broadleaf weeds, look no further than this professional strength broadleaf weed control product. With its powerful formula, ease of use, and proven results, it's the perfect choice for anyone looking to maintain a beautiful and healthy landscape.
8. Fiesta Selective Post-Emergent Turf Weed Killer 1 Gallon
This innovative product features patented technology that delivers visible results within just 24 hours. It is highly effective in both hot and cold weather conditions, making it a versatile solution for a variety of environments. With one gallon of this liquid selective herbicide, you can cover up to 10,000 square feet of turf, making it an economical choice for large-scale applications.
This herbicide is rain-fast within three hours, which means you won't have to worry about it washing away during a sudden downpour. It's an excellent alternative to synthetic chemicals, and you can use it for both broadcast applications or spot treatments. This product not only kills weeds and moss, but it also controls or suppresses diseases such as Dollar Spot, Rust, and Snow Mold.
One of the most significant advantages of this product is that it has no unpleasant odor, making it an ideal choice for those who are sensitive to chemical smells. It's also people and pet-friendly, so you won't have to worry about any harmful effects on your loved ones. After the spray dries, you can re-enter the treated area without fear of staining.
This product is an excellent option for those who live in areas where pesticide bans are in place. It's suitable for use in parks, golf courses, cemeteries, sports fields, and playgrounds. You can rest assured that you're using a safe and effective product that won't harm the environment or the people and animals in it.
Best Post Emergent Weed Killer For Lawns FAQs
Can I use post emergent weed killer on newly seeded lawns?
No, it is not recommended to use post-emergent weed killer on newly seeded lawns. The reason is that these herbicides are designed to kill actively growing weeds, and they can also harm the young grass seedlings. The newly seeded lawn needs time to establish its roots and grow before any weed control measures are taken.
If weeds are a concern in a newly seeded lawn, it is best to control them manually by pulling or digging them out. This will help avoid any damage to the young grass seedlings. Also, it is important to follow the manufacturer's instructions when using any herbicides to ensure their safe and effective use.
In summary, it is not advisable to use post-emergent weed killer on newly seeded lawns. Instead, wait until the grass is more established before using any weed control methods.
Can post emergent weed killer harm my lawn?
Post-emergent weed killers are designed to target and kill weeds that have already sprouted in your lawn. While they are effective at eliminating weeds, there is a possibility that they can harm your lawn if not used properly.
If the post-emergent weed killer is applied at the wrong time or in excessive amounts, it can damage your lawn and cause discoloration or even death of the grass. Additionally, some post-emergent weed killers contain chemicals that can be harmful to pets and humans, so it is important to follow the instructions carefully and keep pets and people off the treated area until it is safe.
To avoid harming your lawn, it is important to choose a post-emergent weed killer that is specifically designed for your type of grass. Also, make sure to apply the product according to the manufacturer’s instructions, and avoid using more than the recommended amount. Finally, be sure to water your lawn after applying the weed killer to help it absorb into the soil and avoid runoff. By taking these precautions, you can eliminate weeds without harming your lawn.
How effective is post emergent weed killer for lawns?
Post-emergent weed killers are generally effective for controlling weeds that have already grown in your lawn. These types of products can be applied directly to the weed, and they work by absorbing into the plant and killing it from the inside out. The effectiveness of post-emergent weed killers can vary depending on the type of weed you are trying to control, as well as factors like the weather and the timing of your application.
To get the best results from a post-emergent weed killer, it is important to follow the instructions carefully and apply the product at the right time. Some products work best when applied in the spring or fall, while others are more effective in the summer. It is also important to choose a product that is specifically designed for the type of weeds you are trying to control, as some products are more effective on certain types of weeds than others.
Overall, post-emergent weed killers can be an effective tool for controlling weeds in your lawn. However, it is important to remember that these products are just one part of a comprehensive lawn care plan that includes regular mowing, watering, and fertilization.
How long does it take for post emergent weed killer to work?
The effectiveness of post emergent weed killer depends on several factors such as the type of weeds, the strength of the product, and the weather conditions. However, in general, it may take several days to a few weeks for the weed killer to work effectively.
Post emergent weed killers work by being absorbed by the weed's leaves and then translocating throughout the plant, killing it from the roots up. The weed may start to show signs of wilting or yellowing within a few days, but it may take up to two weeks for the weed to completely die.
It's important to note that post emergent weed killers work best when used during the weed's active growing season. Also, it's crucial to follow the product's instructions carefully, including the recommended dosage and application method. Using too much or too little can affect the weed killer's effectiveness.
In summary, while the time it takes for post emergent weed killer to work varies, it typically takes several days to a few weeks for the weed to die completely.
How often should I apply post emergent weed killer to my lawn?
The frequency of applying post emergent weed killer to your lawn depends on the type of weeds present in your lawn and the type of herbicide you are using. Most post emergent weed killers need to be applied every 4-6 weeks to effectively control the growth of weeds. However, it is essential to read the instructions on the product label carefully before use as some herbicides have different application rates and intervals.
It is also important to consider the weather conditions before applying post emergent weed killer. Applying the herbicide during hot, dry weather can reduce its effectiveness, and it may damage your lawn. It is best to apply weed killer when the temperature is between 60-80°F and the soil is moist.
It is advisable to inspect your lawn regularly and apply post emergent weed killer as soon as you notice the emergence of weeds. Consistency is key when it comes to weed control, so it is crucial to follow the recommended application rate and schedule to maintain a healthy, weed-free lawn.
What are some natural alternatives to post emergent weed killer for lawns?
There are several natural alternatives to post-emergent weed killers for lawns that you may want to consider. These include:
1. Pulling weeds by hand: This is the most natural way to remove weeds from your lawn. It may be labor-intensive, but it's effective and chemical-free.
2. Corn gluten meal: This is a natural pre-emergent herbicide that can prevent weed seeds from germinating. It's safe for pets and kids and can be applied in the spring and fall.
3. Vinegar: White vinegar can kill weeds by drying them out. Mix it with water and dish soap, and spray it directly on the weeds.
4. Boiling water: Pouring boiling water over weeds can kill them. This method is best used on weeds growing in cracks in your driveway or walkway.
5. Organic herbicides: There are several organic herbicides available that use natural ingredients like clove oil, citric acid, and vinegar to kill weeds.
Remember, natural alternatives may not work as quickly as chemical herbicides, and may require multiple applications. It's also important to identify the type of weed you're dealing with and choose the appropriate natural method for effective control.
What are the active ingredients in the best post emergent weed killer for lawns?
The active ingredients in post emergent weed killers can vary depending on the specific product and the type of weeds it targets. However, some of the most effective active ingredients commonly found in post emergent weed killers for lawns include Glyphosate, Dicamba, 2,4-D, and MCPP.
Glyphosate is a broad-spectrum herbicide that is effective against a wide range of weeds, including perennial and annual weeds. Dicamba and 2,4-D are selective herbicides that target broadleaf weeds while leaving grass unharmed. MCPP is another selective herbicide that is effective against broadleaf weeds and is often used in combination with Dicamba and 2,4-D.
When selecting a post emergent weed killer for your lawn, it is important to consider the specific types of weeds you are targeting and choose a product with the appropriate active ingredients. Additionally, always read and follow the label instructions carefully to ensure safe and effective use of the product.
What is the best post emergent weed killer for lawns?
There are several effective post-emergent weed killers available in the market for lawns. The best one, however, depends on the type of weed you are dealing with. Some of the most common post-emergent weed killers include 2,4-D, dicamba, MCPP, and triclopyr. These chemicals target broadleaf weeds like dandelions, clovers, and chickweed. If you have grassy weeds like crabgrass or foxtail, you may want to opt for a weed killer that contains quinclorac or fenoxaprop. It's essential to read the labels and choose a product that suits the particular type of weed you are trying to eliminate. Additionally, it's crucial to follow the instructions carefully and apply the weed killer at the right time of the year for optimal results. If you are unsure about which weed killer to use, it's best to seek advice from a lawn care professional.
What is the best time of year to apply post emergent weed killer to my lawn?
The best time of year to apply post emergent weed killer to your lawn depends on the type of weed you are targeting. Generally, post emergent weed killers are most effective when applied during the active growing season of the weeds. For broadleaf weeds, such as dandelions and clover, the best time to apply post emergent weed killer is in the fall when the weeds are actively growing and preparing for winter. This allows the herbicide to be absorbed into the plant and kill it at the root, preventing it from returning in the spring.
For grassy weeds, such as crabgrass and foxtail, the best time to apply post emergent weed killer is in the spring when the weeds are just beginning to emerge. This will prevent them from spreading and taking over your lawn. It’s important to read the label of the weed killer you choose to ensure it is safe to use during the time of year you plan to apply it. Additionally, be sure to follow the instructions carefully to ensure the best results and avoid damaging your lawn.
Will post emergent weed killer kill all types of weeds in my lawn?
Post emergent weed killer is formulated to kill weeds that have already emerged from the soil. However, it is not a one-size-fits-all solution for all types of weeds. Different weed killers are designed to target specific types of weeds. Some weed killers are effective against broadleaf weeds, while others are effective against grassy weeds.
It is important to identify the type of weed that is growing in your lawn before applying any weed killer. This will help you choose the right product that will effectively kill the particular weed. Additionally, it is crucial to follow the instructions on the label carefully to ensure that you are using the product correctly and safely.
In summary, post emergent weed killer may kill some types of weeds in your lawn, but not all. It is important to identify the type of weed and choose the appropriate weed killer for effective results.
