Top 7 Best Dandelion Killer Spray for Lawns | 2020 Review

Although young children love the sight of these bright yellow dandelions and their irresistibly fluffy and entertaining bulbs, most grown-ups hate them, especially those of the lawn-tending type. 

Dandelions are among the wide category of weeds called broadleaf perennials, which are known for being very difficult to remove and kill. Once these yellow flowering plants have established their 10-inch long taproot, the weed will come back year after year and spawn across your lawn indefinitely. 

The killing of that long taproot is the key to their extermination. And plucking them out won’t do the trick. If you want to remove these pesky dandelions from your lawns, you will need to attack them where it hurts. And attacking them with a potent dandelion spray would do just that. Read on to see a list of the best dandelion killer sprays in today’s market.

Top 7 Best Dandelion Killer Spray for Lawns Reviewed

  1. Spectracide Weed & Grass Killer with Extended Control Concentrate – Best Overall
  2. Roundup Weed and Grass Killer III – Best Value
  3. Southern Ag 2,4-D Amine Weed Killer – Editor’s Choice
  4. Ortho Weed B Gon Chickweed
  5. Ortho Weed B Gon for Lawns 
  6. Environmental Factor Green-It Liquid Corn Gluten
  7. Bayer Natria Lawn Weed Control 

#1. Spectracide Weed & Grass Killer with Extended Control Concentrate – Best Overall

Spectracide Weed & Grass Killer with Extended Control Concentrate

 

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Specifications:

  • 40 ounces per bottle
  • Lasts up to three months
  • Contract killer
  • Non-selective

The Spectracide Weed & Grass Killer with Extended Control Concentrate is made by an international company called United Industries Corporation. They are known for producing many different home products intended for controlling pests and weeds in your lawns and gardens. They are able to focus more on their customers and products because they’re not a very big company, and each of their herbicides is developed with extra attention.

This 32-ounce dandelion killer concentrate can be diluted in 10 gallons worth of herbicide spray. This one container will treat a maximum of 16,000 square feet, and it kills the roots of the plants so that they won’t be back for at least three months. 

For best use, apply in warm water, and use in sunny weather when the temperature is over 60 degrees out. This way, you can knock out even the toughest of weeds. This Spectracide Weed & Grass Killer with Extended Control Concentrate will kill off more than 200 broadleaf weeds, including dandelion, chickweed, and other weeds that can irritate allergies, like ragweed. 

People love it for being a great dandelion killer. It can kill dandelions and weeds in a day, as long as you follow the instructions properly. Some also say that it would work best if used before the summers, and you need to use it in greater concentrations to ensure an effect that will last throughout the summer. However, some did not like how it smells and said it leaves a strong chemical scent if not diluted well. 

Overall, this dandelion killer spray starts to work in just hours after you apply it. If you have plants that you want to protect, make sure not to let the spray hit them, and you’ll have a lawn filled with beautiful plants. Free from weeds and full of life. 

ProsCons
Kills multiple kinds of weeds Has an odd odor
Potent dandelion killerNon-selective
Safe for pets and kids
Long-lasting
Rainproof


#2. Roundup Weed and Grass Killer III – Best Value

Roundup Weed and Grass Killer III

 

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Specifications:

  • 40 ounces per bottle
  • Lasts up to three months
  • Ready to Use
  • Contract killer
  • Non-selective

The Roundup Weed and Grass Killer III is among Roundup’s Ready-To-Use Weed and Grass Killers in their arsenal. They made it very convenient to use. And becomes rainproof in 10 minutes, with the results showing within 3 hours after application. 

This product comes in different sizes and is offered as a refill, which can directly be put in their pump-and-go canister and used on dandelions instantly. This dandelion killer spray does not require mixing. Thus making this a go-to-brand for people who need instant herbicides for their dandelion and weed problems.

This kind of herbicide is safe to use for your vegetable gardens and flower beds. But, be sure not to apply it directly on to the vegetables as this will kill them as well. This spray will kill weeds to the roots. After being sprayed on their leaves, the chemicals will slowly creep into the stem and the roots of the weed and kill them. This will ensure that they won’t be able to recover, ridding you of your dandelion problems. 

People who used the product say that it works great. Some even call it a plant murdering machine. It’s so easy to use and still kills everything you need it to. Though it takes a few days before the results are enjoyed, the guarantee that it will work is worth waiting for.

Overall, in terms of ease of use, this product easily tops the list. And, after using this product, store it, and pull it out on the next season. The Roundup Weed and Grass Killer III is absolutely hassle-free and absolutely effective.

ProsCons
Kills multiple kinds of weeds Non-selective
Potent dandelion killer
Sold in different sizes
Easy to use


#3. Southern Ag 2,4-D Amine Weed Killer – Editor’s Choice

Southern Ag 2,4-D Amine Weed Killer

 

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Specifications:

  • 32 ounces per bottle
  • Lasts up to three months
  • Ready to Use
  • Contract killer
  • Selective

Southern AG has been in the herbicide industry for over 70 years. They are recognized for being among the most reliable brands that make industrial-strength herbicides and insecticides. The Southern Ag 2,4-D Amine Weed Killer formula is made to tackle broadleaf weeds across wide areas, especially dandelions. 

This is offered in a 32-ounce bottle with a bigger option at 128 ounces. It may not be the cheapest on the list, but it’s among the most economical to use. It’s effective even in smaller concentrations, which makes it great for killing weeds in wider areas. And, it’s best used before you start reseeding your lawns for the next season. 

Using the product is very easy. However, it does require a bit of mixing. After mixing the solution in water, spraying it shouldn’t be difficult. It can be put into a handheld sprayer, a pump, or hose. This can also be used on edible plants, but as it still has chemicals, there’s a chance that they may die. So remember to avoid hitting them, but you don’t have to worry as much if you do.

Individuals who used this found it amazing. It works well for dandelions and weeds and works very fast. They also note that it can work on killing clovers. Most of them praise the product for being among the best ones they have tried and the fastest as well. Although, some said that its effect only lasts for around 40 days, and they’ve observed new dandelions after that time.

Overall, The Southern Ag 2,4-D Amine Weed Killer has proven to be one of the best dandelion killer sprays for use in the market. If you are looking for something to get rid of dandelions and weeds, you cannot go wrong with this choice. 

ProsCons
Kills multiple kinds of weeds Costly when bought
Sold in different sizes
Doesn’t affect grass
Cheap to use


#4. Ortho Weed B Gon Chickweed

Ortho Weed B Gon Chickweed

 

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Specifications:

  • 16 ounces per bottle
  • Lasts up to three months
  • Ready to Use
  • Contract killer
  • Non-selective

Ortho is among a number of the named brands under the Scotts Miracle-Gro company. The Weed B Gon herbicide is a well-known product used to eliminate smaller garden and lawn infestations. It is as great at dealing with wildflowers and groundcover as it is at eliminating weeds. This product will guarantee that your lawn stays beautiful and full of life.

This formula is designed to destroy the dandelions up to their roots. This can also eliminate ground creepers and weeds. This is an ideal choice for people who want to take care of smaller grassy areas and lawns. A 16-ounce bottle can cover 3,200 total square feet. And, if you get the Ortho hose adapter, you can connect the bottle directly to your garden hose and spray it across the lawn. You won’t need to dilute or mix this formula in water at all.

The product is safe to use on almost every type of domestic grasses. It saves your lawn from dandelions and other unwanted weeds, but it’s selective enough and leaves your grass strong and healthy. Since it’s safe on almost any grass, you can use it in different areas. It only takes six hours for the weed killer to become resistant to rain, which may be longer than most others, but it a great product none-the-less.

Users’ experiences of the product are mostly positive. It works as well as more expensive products. Despite it being sold in smaller bottles than others, it outperforms most products. They also say that this works even when used before a nice rain, with its effects remaining even after getting soaked. Although, if you have ivies on your lawn, they may die from this formula.

Overall, this is the best dandelion killer spray for lawns that come in smaller bottles out there. Also, since it comes in a small package, it should be just enough for your needs.

ProsCons
Kills multiple kinds of weeds Not suitable for UK fitting hoses
Comes in a small packNot good for bigger lawns
Sold in different sizes
Selective


#5. Ortho Weed B Gon for Lawns 

Ortho Weed B Gon for Lawns

 

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Specifications:

  • 16 ounces per bottle 
  • Lasts up to three months
  • Ready to Use
  • Contract killer
  • Non-selective

Another product from Ortho, this is among the offered products of the brand under the Scotts Miracle-Gro company. The Weed B Gon for Lawns herbicide is a bigger version of the above men Weed B Gon Chickweed. Like its smaller counterpart, it is also as great at dealing with wildflowers and as it is at eliminating weeds. This product will guarantee that your lawn is free from those pesky dandelions.

This formula is designed to destroy the dandelions up to their roots. Although, unlike many other broadleaf formulas, this product can also eliminate ground creepers, wildflowers, and the like. But, unlike its smaller counterpart, this can become rainproof after just one hour, much quicker than the chickweed’s 6 hour rainproofing. 

When using the product, it should be shaken well beforehand. Then you simply attach the dilute the concentrate in water and spray on the areas with dandelions. However, certain precautions should be done when using it. This product contains chemicals that could be toxic. It’s recommended to use this product while it’s sunny outside. 

Individuals who used it found the product generally positive. Most of them say it is great for killing dandelions in lawns, gardens, and perimeter of homes. It is perfect for treating large areas as well. Although, several of them noticed leaks on the bottom of the bottle after storage.

Overall, the Ortho Weed B Gon for lawns is the best in killing a wide variety of wildflowers and weeds. It is both efficient and long-lasting top-notch. Highly recommended. 

ProsCons
Kills multiple kinds of weeds May be too much for most lawns
Great for big lawns


#6. Environmental Factor Green-It Liquid Corn Gluten

Environmental Factor Green-It Liquid Corn Gluten

 

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Specifications:

  • 2.64 gallons per bottle 
  • Lasts up to three months
  • Ready to Use
  • Contract killer
  • Selective

This plant-based liquid corn gluten concentrate is grown by nature and engineered for performance. The Environmental Factor Green-It Liquid Corn Gluten is a plant-based wonder. As corn gluten is a by-product of starch production, it is a renewable & environmentally friendly resource.  The ingredients in the product are protein powered with nutrients, which gives applicators a sprayed method to thicken lawns and keep out weeds and dandelions. 

Like the others on the list, this has to be diluted in water before using it. The ratio of the concentrate to water is dependent on the instructions. After that, you simply have to shake it well and attach it directly to your garden hose. After turning on the water, spraying it in the necessary areas should be easy after that. Although it should not be used in areas with newly seeded plants and grasses, you also have to be careful when using this product near fruits and vegetables as it may thicken the soil under them too much. 

Individuals who used it said that this product is effective in stopping a dandelion infestation. Although, be sure to strain the product before putting it into the strainer. It works best on dandelions and wildflowers, making it great for your lawns. They also recommend using the amount you need and avoiding over-spraying to avoid thickening the soil too much.

Overall, this spray is a great natural alternative. It can eradicate dandelions in a few days and contains much fewer chemicals than others on the list. Just remember not to apply it on newly seeded lawns or gardens as seed germination may be affected.

ProsCons
Kills multiple kinds of weeds Not for use on newly seeded lawns
Environmentally friendly May thicken soil
Great for big lawns
Organic


#7. Bayer Natria Lawn Weed Control 

Bayer Natria Lawn Weed Control

 

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Specifications:

  • 24-ounce per bottle 
  • Lasts up to three months
  • Ready to Use
  • Contract killer
  • Selective

If you are looking for a great solution for your weed and dandelion issues, the Bayer Natria Lawn Weed Control is a great option for you. This solution is great for solving your issues with almost any type of weed, and it works best against dandelions.   

This is very easy to use. This organic herbicide comes in an easy spray bottle, which you can carry around without issue and spray directly to the affected area. This formula can also repel the growth of any weed after application as it leaves a residual effect that may last up to three months.  

This formula is safe to use around kids and pets, but it is best to keep them away from this product. After sprinkling the formula in the area, give it time to take effect before letting your kids and pets go near the dying weeds. This will allow for the formula to do its job and keep your loved ones safe.

The positive responses from the people who used the product are plenty. They like how it’s almost odorless and very easy to apply. They say that after spraying the formula on dandelions, it takes effect quickly. Letting them rot shortly after. Although some note that it takes a few sprays for it to work

Overall, among the ones on the list, this is the easiest to apply. Its easy-to-spray container is a huge plus. If you need a quick and easy solution to dandelions, this is the one for you.

ProsCons
No need for mixingMay require multiple applications
Ready to use
Handheld
Organic


Top Pick Section:

Although young children love the sight of these bright yellow dandelions and their irresistibly fluffy and entertaining bulbs. But for the grown-ups who tend to the lawns and garden they have grown, they are a menace. This is why the list’s top pick for dandelion killer spray for lawns is highly recommended.

The Spectracide Weed & Grass Killer with Extended Control Concentrate is developed with extra attention. It works in just hours after you apply it. Making it both fast and reliable in solving your problem. As with other dandelion killers in the market, if you have plants that you want to protect, make sure not to let the spray hit them.

This 32-ounce dandelion killer concentrate is the best dandelion killer in the market. Mix it with water and spray the pesky dandelions to oblivion.


Types of Dandelion killer

In General, there are two types of herbicides in the market. The selective and Non-selective variant. Among many other things, this is one factor you need to consider before choosing which dandelion killer spray to buy. But what do these terms mean?

Selective Herbicide

This type of herbicide targets dandelions in particular. When applied to the plants, this formula will kill dandelions but does not harm the other plants that surround it. The way this was formulated was designed not to kill the plants you want to protect from weed and wildflower invasion.

A selective herbicide is a formula that will get rid of dandelions without causing any harm or damage to the other plants in your garden or lawn that are wanted. Although this takes longer to take effect, if the dandelions grow close to your plants, this is the best choice for you. 

Non-selective Herbicide

If you notice wildflowers and dandelions growing and popping up on the cracks in your patches or sidewalk of your driveway, you should buy a non-selective herbicide. This will kill off every plant it touches, which is great since this is best used in areas where plants should be growing.

This can also be used in areas where there aren’t that many grasses growing. And, even in areas with more plants but just be more careful when applying it. Make sure that you do not hit the plants you want to keep with this herbicide.


Three steps to get rid of dandelions

The quickest and least labor-intensive way to kill dandelions is to spray them with a formulation of broadleaf herbicide. But, some people would choose to go for a different and more natural method. If that’s what you want, you may consider this multipronged approach for ridding your lawn of dandelions. 

Step 1: Dig up the dandelions.

First, water the area where the dandelion is growing and wait for the solid to absorb the water and the moisture to settle in. Then work a weeding knife down along the base of the dandelion, wiggle the knife around to include all of the roots as well. Hold the stem of the plant gently and pull it with your fingers. Make sure to pull out the whole plant, from petals to root. 

Step 2: Target the roots and kill them.

Any part of the dandelions taproot that remains from the previous step will grow into a new plant, so you need to kill what’s left of it. Apply herbicide to the roots and the hole you made to discourage further growth from the roots and kill in entirely. Make sure to use a natural and selective herbicide made specifically for killing dandelions. The market is filled with these products, but you may choose to use homemade ones. 

Step 3: Fill the hole with a pre-emergent herbicide and soil.

After digging up the dandelion and killing the roots, you need to refill the hole with soil to discourage other aggressive weeds from growing in the area. Fill the hole with soil mixed with a pre-emergent herbicide. This will make the area immune to other weeds and wildflowers that may grow in the area. You may then reseed the area or wait for your turf grass to cover the spot in a few days.

After doing these steps, take time to strengthen your lawn. A strong and healthy lawn is generally stronger against invading weeds and dandelions. This is because a healthy lawn, fully covered with turfgrass, won’t leave any space or nutrients for the weeds and dandelions to grow on. 


How to keep a lawn healthy

Among many other things, there are four ways to ensure that you have a healthy and flourishing lawn. If you want a yard or garden that is beaming with life and is filled with beauty, it is best to follow these three things:

  • Water your lawn deeply but not often. This will encourage a strong and deep root system that will help your grass flourish.
  • Make sure to cut no more than a third’s length of the grass blades at a time. This will allow the grass to photosynthesize well enough and keep the grass from drying out quickly after trimming. 
  • Schedule a proper fertilizing schedule based on the type of your grass. Research more on this topic as there are grass species that need more fertilizing based on different conditions.


Conclusion

In the end, if you want the best dandelion killer, everything on the list should tend to your needs. You just have to choose which one best suits the conditions you find yourself in. Are the dandelions growing on your lawn? Consider getting a selective dandelion killer. Or are they growing on cracks in the concrete? A non-selective dandelion killer should do well for your needs. 

These products may not work for all the weeds and wildflowers out there but, when it comes to killing these yellow flowers and their irresistibly fluffy and entertaining bulbs, they’re more than up for it. Every product in this list has been proven to be an effective way to kill off these pesky dandelions.

Of course, the top pick in the list is still the Spectracide Weed & Grass Killer with Extended Control Concentrate. It will work on any and all dandelion problems that may come your way. Although a little care will be needed when using it. Then again, which product doesn’t? Regardless of the product you choose, you cannot go wrong with any of those in this list. 

The routine for eliminating dandelions may be a hassle for some, but if you want to keep your lawns and gardens healthy, it’s a must. You should always consider adding this activity to your regular lawn maintenance routine to prevent an outbreak from happening. And by doing so, you will be left with a perfect lawn for any perfect day.


Frequently Asked Questions – FAQ

Should I do soil or foliar application?

This will depend on the type of herbicide you will be using. It will determine whether or not you have to apply it directly to the soil or on the plant itself. As a general rule, a pre-emergent herbicide will need to be applied directly to the soil. While post-emergent, also known as foliar, will be applied to the plant itself. 

Like any product, be sure to follow the directions given by its manufacturer to ensure that you will be using your herbicide correctly. While some products may be used for both applications, certain measures have to be taken.

Which is better, granular or spray type herbicide?

The majority of herbicides are available in spray types. But some come in a granular form as well. Granular herbicides are usually pre-emergence herbicides applied before planting begins and are usually nitrogen-rich and great broadleaf weed inhibitors. In comparison, sprays are more general in their use and can be applied using both of the mentioned methods above. 

There is no one answer to this question; it is solely based on how you will be using these products. Aside from this, personal preference is also a factor. 

Do dandelion killers work?

Yes. There may not be a single solution for weed invasion, but products are specifically made for killing dandelions. These products work, and they can kill dandelions. 

There are some formulations that only work for dandelions and not the surrounding weeds; these are known as selective dandelion killers. As their counterparts, the non-selective dandelion killer will kill weeds and other plants that they touch.

 

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