When you were younger, seeing the happy yellow dandelions in your yard probably made you very happy. But, now that you’re grown up, seeing these dandelions ruin your beautiful green yard most likely fills you with dread. They can be difficult to get rid of, and this is why you need the best dandelion killer available on the market.
They’ll take care of your problem and leave you with a lush and green yard you can’t wait to enjoy all summer long. Compare our top 10 picks for the best dandelion killer below, and take a look at our useful buying information to see what criteria matters when it comes to narrowing down your choices.
- 1. Spectracide Weed & Grass Killer
- 2. Green Gobbler 20% Horticultural Vinegar Weed Killer
- 3. Scotts Turf Builder Weed and Feed
- 4. Bonide Weed Beater Ultra
- 5. Roundup For Lawns 3
- 6. Southern Ag Amine Weed Killer
- 7. Preen Garden Weed Preventer
- 8. Compare-N-Save Concentrate Grass and Weed Killer
- 9. BioAdvanced Weed and Crabgrass Killer
- 10. Ortho Weed-B-Gon Weed Killer
- Best Dandelion Killer – Buyer’s Guide
- Types of Dandelion Killers
- Granular or Spray
- Buying Considerations
1. Spectracide Weed & Grass Killer
If you’re someone who has a big problem with dandelions in the cracks of your sidewalk or around your hardscape, this is the dandelion killer for you. It’s a very fast-acting herbicide that will kill anything it comes into contact with. Probably the best weed killer out there. For a full yard of dandelions, you can spray it on the yard and then re-seed it to keep a growing season’s worth of dandelions away. This broad-spectrum weed killer works on 200 broadleaf weeds like chickweed, ragweed, and dandelions.
A single container of this dandelion killer can cover up to 16,000 square feet. Once it hits the plant, it’ll travel to the roots to kill it off so it won’t come back for at least 90 days. It’ll start working within hours of the initial application, and you should cover any area you don’t want it to accidentally kill off. It won’t wash away with rainwater or if you try to rinse it off, so be sure you get it exactly where you want it.
- Kills weeds for up to 90 days
- Goes to the root and works outwards
- Starts working within hours of the first application
- Better suited to small yards
- May have to reapply it in a few months
- Has a very strong smell
2. Green Gobbler 20% Horticultural Vinegar Weed Killer
This is the dandelion killer if you’re after something organic and natural. This formula starts with a strong vinegar base, and this makes it safe to use around your kids and pets. It’s also biodegradable, and this makes it safe for the environment. You get a larger five gallon container with each order, and you should see it start to kill off the dandelions within 24 hours of applying it. Additionally, this herbicide works well on crabgrass and clover weed.
This is a better spray if you have a light dandelion infestation. It doesn’t work very well for large problems because it’s not strong enough. This dandelion killer has no harsh chemicals to worry about, and it’s glyphosate-free. You can use it at your home or office without a problem, and each purchase comes with a money-back guarantee that lasts from 30 days from the date you buy it. It’s four times stronger than traditional vinegar to knock out the weeds.
- Certified organic and natural
- Safe to use around kids and pets
- Doesn’t work well on large infestations
- Can take days to work
- Difficult to get it out of the container
3. Scotts Turf Builder Weed and Feed
This is the dandelion killer for anyone that has more than one type of lawn to concentrate on. This formula works very well on clover and dandelions, and it can tackle several other weed species as well. It’s very easy to apply, and it won’t accidentally burn or kill off your grass while it kills the weeds. All you have to do is water your yard, sprinkle the granules, and let it work. You do need to keep pets and your family off the lawn for 24 hours after you apply it.
This is the dandelion killer that also doubles as a nutrient boost for your grass. It can cause your grass to look greener, thicker, and more lush after one application. It works well with seven different types of grasses, and it doesn’t leave a harsh scent when you apply it. It can cover up to 10,000 square feet with a single bag, and this is more than enough to tackle a large yard.
- Acts as a fertilizer and weed killer
- Helps the lawn crowd out dandelions
- Safe and effective
- Have to stay off the yard for 24 hours after you apply it
- May have to apply more than once to see results
- Can wear off quickly
4. Bonide Weed Beater Ultra
If you have a little more money to spend, this one of the best weed killers available. It comes packaged in a 32-ounce bottle that is very strong but versatile. Since it has such a strong formula, one bottle can kill hundreds of types of weeds while leaving your grass unharmed. It works very quickly as well. You should notice the problem weeds starting to droop within three or four hours of applying it, and it’ll kill them in a week. Once you apply it, it’ll turn waterproof in a few hours.
This is one of the best weed killers that goes straight to the weed’s roots to kill it from the ground up and stop it from coming back. It has an easy spray application process that allows you to get even coverage over your entire lawn. It should mix with water when you apply it to help the formula go further than it would if you just used it undiluted. You can spray it in warm and cool weather conditions without a problem.
- Kills over 200 species of weeds
- See results in a few hours
- Turns waterproof after you apply it
- More expensive for the amount you get
- May take two applications
- Can damage certain grass species
5. Roundup For Lawns 3
If you’re looking for the dandelion killer with a ready-to-spray applicator, look no further than Roundup for Lawns 3. This is an excellent choice if you want to perform a widespread broadcast application over your entire lawn. Once you connect it to your garden hose, it’ll mix with the water to give you an even application that will cover up to 5,000 square feet. This is enough for small or medium yards, but you’ll need another if you have a bigger area to worry about.
It won’t harm your lawn, but this is the dandelion killer that will take on clover, crabgrass, dandelions, and yellow nutsedge. It works well on northern grasses like Perennial Ryegrass, Kentucky Bluegrass, Buffalo grass, Fescue, and more. It’ll turn rainproof three hours after you spray it, and it’ll start killing the weeds as soon as you apply it. It comes in two different styles, and there are refills available if you need more for a bigger yard or a section application.
- Will cover up to 5,000 square feet
- Available in different styles
- Works well on northern grass species
- Might have to apply it twice in infested areas
- Weeds may come back in a few weeks
- Doesn’t get down to the roots
6. Southern Ag Amine Weed Killer
When you start your search for a dandelion killer, Southern Ag Amine is one you want to consider. It works very well on almost any type of lawn without you having to worry that you’ll kill it. Additionally, you can safely use it on certain types of vegetation without doing any damage. It’s powerful when it comes to killing off broadleaf plants. However, you do want to cover vegetables before you use it because they can be sensitive if sprayed.
A single container will cover a smaller yard up to 1,000 square feet. You do need to mix this dandelion killer with water before you spray it. You’ll mix it at a concentration of three to five tablespoons per every three to five gallons of water. You can attach it to a hose sprayer and use the fan spray to get an even coating over your entire yard. It also works well if you have dandelions growing around your home or through cracks in the cement or gravel.
- Won’t harm grasses or certain vegetation
- Covers up to 1,000 square feet
- Easy to mix and apply
- Sprayer bottle not included
- Takes up to a week to work
- Not potent enough for overrun yards
7. Preen Garden Weed Preventer
If you have a large area you covered in mulch that has a weed problem, this is the dandelion killer. It comes in a granulated formula that prevents a broad range of weeds from springing up where you spread it. It can stop the weeds from appearing for up to three months after the initial application. The label claims you can safely and effectively use it around 200 types of plants, and this includes edibles and ornamentals.
It’s very easy to spread this dandelion killer in your mulched areas. Once you spread it, you have to water it into the soil. The granules will bond with the surface of the soil to prevent weeds from being able to form roots and grow up through it. One bottle of this weed killer will take care of an area up to 2,560 square feet. It won’t kill any existing weeds, but it will stop new weeds from growing. The container is easy to open and easy to seal to keep your granules fresh.
- Blocks weeds for 90 days
- Works well on mulched areas
- Can use around ornamental and edible plants
- Does not kill existing weeds
- Does not have clear usage instructions
- Can eat through sensitive plants
8. Compare-N-Save Concentrate Grass and Weed Killer
For fast and efficient results with a huge coverage area, try this dandelion killer. Compare-N-Save’s formula gives you highly visible results in just two to four days from the initial application. Once you apply it, it’ll turn rainproof in as little as two hours. This prevents it from accidentally washing away and wasting an application if you live in a wet area. It has a powerful formula that contains up to 41% glyphosate that is effective for hundreds of types of weeds.
If you have a huge area, one bottle of this dandelion killer will easily cover up to 25,000 square feet. It makes up to 85 gallons of spray that is ready to use. This spray will kill the weeds down to the root, and this prevents them from coming back for months at a time. You can use it on driveways and walkways, along fences, and around your edibles and ornamental plants.
- Covers 25,000 square feet per bottle
- Easy to mix and apply to your lawn
- Won’t kill the grass
- Takes a while to see a difference
- Forms a film that clogs the sprayer
- Need to reapply it to infested areas
9. BioAdvanced Weed and Crabgrass Killer
Anyone who wants formula options when they shop for a dandelion killer should take a look at BioAdvanced’s product. It comes in a concentrate, as a ready-to-spray formula, and as a ready-to-use formula. It works well on over 200 types of common weeds and crabgrass, and it’ll turn waterproof within an hour of applying it. Once 32-ounce bottle will cover up to 6,000 square feet of lawn and give you enough for an even application.
You get an onboarding thread built into the bottle that makes it quick and easy to hook up to your garden hose to apply it. Even though it’s one of the best weed killers available, it’s very cost-effective and can fit into any budget. Once you spray it, it’ll sink to the weed’s roots and kill them to kill the plant and prevent it from coming back. You should be careful when you spray it around your flowers or vegetables because it can easily cause burn marks.
- Kills over 200 different weeds
- Concentrate mixes with water to cover 6,000 square feet
- Turns waterproof within an hour
- Large crabgrass infestations can take two or three applications
- Can irritate the skin if you splash it on yourself
- Doesn’t have good pressure when you spray it
10. Ortho Weed-B-Gon Weed Killer
Ortho is a big name in the weed and pest control industries, so it makes sense that they would make one of the best weed killers on the market. This formula can and will kill up to 250 different types of weeds without injuring your lawn. Once you spray it on, it’ll work its way down to the roots of the weed. This will give you visible results in as little as a few hours. For larger infestations, it may take a few days to see noticeable results.
However, it’ll become resistant to water within an hour of applying it. This means it won’t runoff if you have an unexpected rainfall or you want to water your flower beds. You can choose from comfort wands or trigger sprayers when you buy it. It also comes in ready-to-spray and concentrate solutions. It works on both northern and southern lawns without harming them.
- Available in multiple forms
- Kills up to 250 types of weeds
- Shows results in a few hours
- Doesn’t work well on clover
- Can burn through the amount you get very fast
- Weeds can come back too quickly
Best Dandelion Killer – Buyer’s Guide
Dandelions are a broadleaf weed, and this is why all of the best dandelion killers target these weeds specifically. They’re perennial weeds, and they’re able to easily grow in almost any soil type due to their thick taproot. This makes it especially frustrating to try and get rid of them. Unless your weed killer goes after the entire taproot, the dandelion will regrow in the same spot. This can happen in a few weeks, or the dandelion can stay hidden for up to a year before springing back up.
The dandelion killer will target not only the plant, but it’ll go deep into the ground to get rid of the dandelion’s taproot. It’s a good idea to try and remove as many dandelions as possible by hand, but the dandelion killer will help you get rid of really stubborn ones that you miss.
As dandelions go through their growth cycle, they get scraggly before turning into tall weeds with white heads that blow away in the breeze. The end result is tall weed sticking up from your lawn.
Types of Dandelion Killers
There are four main categories when it comes to dandelion killers. Each category can work well for your needs, but some work better for large dandelion infestations. The four main types are:
- Broad Spectrum – If you have somewhere in your yard where you want to take out both the weeds and the grass, a broad spectrum formula is the most typical dandelion killer available. It’ll kill anything green that it lands on, including plants, shrubs, grass, weeds, vegetables, and flowers.
- Selective – Selective herbicides are the ones that are most popular in the dandelion killer family. They target broadleaf weeds while leaving the grass alone. You do want to be careful because some will kill southern grass species, and you shouldn’t use it around edibles.
- Organic – Organic herbicides are a good choice for low-level dandelion infestations. They’re not as powerful as chemical-based herbicides, and this can limit their ability to work. However, they’re generally safe for use around your children or pets.
- Chemical – The final category for the best dandelion killers is chemical herbicides. They work very well, but they can irritate your skin or eyes if you happen to splash it on you. Also, they can be toxic if your family or pets come into contact with them, but they work great for overrun yards due to their potency.
Broad-range applications of the dandelion killer are popular on commercial farms where they grow crops to sell for public consumption. Since the fields are huge, they need a herbicide that will cover them all very quickly.
Granular or Spray
The best dandelion killers come in two broad formats. You can get a liquid form that you turn into a yard spray, or you can get a granular one that you sprinkle over your lawn. Again, both forms work well. It depends on how much time you want to put into applying it and your yard size. Most granular herbicides form a patchwork over the top of the soil that prevents weeds from coming through, but they won’t do much for existing weeds. They can also give your lawn a nutrient boost. Sprays are an easy way to cover a broad area, and they take out existing weeds. However, they can burn any ornamental or vegetable plants they land on.
Once you decide on the type of herbicide you want, you can narrow down the dandelion killer to suit your needs by using our buying considerations. We’ll narrow down everything you need to know to pick out the herbicide that is going to do the job as quickly and efficiently as possible to give you a green, lush, weed-free lawn.
The volume of your container will determine how much product you get. The bigger the container you buy, the better price point you typically get. So, you have to think about your application needs and your yard size when you shop. If you apply it twice, does it make sense to go with the larger containers? You’ll pay more, but it’ll stop you from having to go back and buy a second one.
How much of the dandelion killer do you need to kill the weeds off to the root? A lot of the time, you’ll have to mix the herbicide with water using a hose and spray it over your yard. This can potentially make your product cover a larger area, but it can also mean that you end up with a diluted formula. If this happens, it’s not as potent and some weeds can make it through. Cheaper options usually make you use a higher dose per application.
It’s essential that you get the correct dosage when you use the best dandelion killer because you don’t want to burn your grass. You also want it to be potent enough to kill the weeds.
One neat thing about weed killer is that they have waterproofing capabilities. Usually a few hours after you spray or drop them, they form a waterproof layer. This layer prevents your weed killer from washing away when you water your yard or if you get a heavy rainfall. In turn, you’ll get a gorgeous lawn. You want to check and see if your choice offers waterproofing. If it does, see how long it takes it to form. It can be anywhere from one to eight hours after the initial application.
The price will play a role in which dandelion killer you pick out, and there is a broad price range. Some start at just over $10 while others go up to the $50 range. Ideally, you’ll set a budget before you start to shop. This way, you can narrow down your options right away and it won’t seem so overwhelming to you. Remember that the cheaper options usually require that you use more to cover an area than the more expensive options will. This may not always be the case, but it’ll ring true for the majority of the time.
Some of the weed killers don’t work well unless you apply them during a specific temperature range. If one requires cooler temperatures for application and you decide to treat your grass when it’s hot, it may not work. The same goes for any herbicide that has a warmer temperature requirement. The higher your temperature threshold is, the better off you’ll be with your product.
If you use your best dandelion killer correctly, you’ll be able to get rid of dandelions effectively and end up with a green and gorgeous lawn that you can’t wait to spend time in.
Which of our list of the best dandelion killers sounds like it’ll work best for your yard? Do you have a favorite? If you’re going to buy one, we invite you to compare our products and use the best dandelion killer buying guide to narrow down your choices. If you pick correctly, you could end up with a gorgeous, green, and lush lawn all summer long.