Best Dandelion Killer Reviews 2021 & Buying Guide
When do you need the best dandelion killer? Despite having some potential health benefits, dandelions make an eyesore in your lawn.
Severe dandelion infestation halts the growth of the grass and turns your lawn into a messy place. That’s when you consider getting rid of these broad-leaf weeds as soon as you can.
We’ve rounded up 10 dandelion herbicides that actually work. Some of them kill everything they come in contact with, making them unfit for use on the lawn. Check out our picks to choose the best one for your garden.
10 Best Dandelion Killer In-depth Reviews 2021
Espoma Organic Weed Preventer – Best Organic Dandelion Preventer
For environmentally-conscious gardeners, Espoma Organic Weed Preventer is one of the best organic herbicides out there.
This weed preventer is totally made from pure corn gluten meal, which causes no harm to nearby edible plants and flowering shrubs. Children and pets are also safe playing around the treated area right after the application as this compound doesn’t contain any toxic chemicals.
By targeting emerging seedlings to kill off delicate roots, the product can prevent the further growth of unwanted weeds. It works effectively with dandelions, along with crabgrass and several weed types.
You’ll need two applications per year to bring the dandelions under control. This natural dandelion killer will kill around 60% of weeds it encounters in your lawn on the first application. The effectiveness rises to 95% on the second attempt.
Additionally, this pick doubles as a grass food, containing 8.23% slow-release nitrogen in each 25-pound bag to help your lawn grow thicker and greener.
The key thing about pre-emergent killers is that you have to apply them in time to stop the initial growth.
If you’ve got an abundance of established dandelion plants and other broadleaf weeds, you’d better avoid the product as the nitrogen will fertilize the weeds, and they’ll grow much faster.
- An all-natural weed preventer
- Effectively kill crabgrass
- Safe for children and pets
- Doesn’t harm vegetable gardens
- Keeps lawn healthy and happy
- Counter-productive if applied to aggressive weeds
Scotts Turf Builder Weed Killer B00XJM8KMQ – Best For Effectiveness
In terms of performance, this broadleaf herbicide is the best dandelion killer that won’t kill grass available. It serves both as a dandelion weed killer and a lawn fertilizer.
With two times more power than the previous formula, the product grips both the visible dandelions and those hiding away from your naked eyes. Pesky dandelions and clovers don’t stand a chance against this powerful weed killer product.
Thanks to its high effectiveness, one application is sufficient to eliminate all dandelions in the yard. You only have to wait two weeks before all the dandelions, and other broadleaf plants such as Canada thistle and clover wither and die.
Besides, this formulation helps to feed your lawn to grow greener and lusher. A healthier green lawn means that the weeds will have a harder time crowding them out.
However, you should exercise caution when applying this dandelion killer. The small pellets are prone to over-application, which can lead to unintentional grass burning in the process.
- Doubles as fertilizer for grass
- Effectively grips all weeds
- Wipe-out all dandelions with only one application
- Harms the lawn if overly applied
Southern Ag Amine 2,4-D Herbicide – Best For Budget
This pick makes an excellent choice for those with a tight budget with generous volume and an economical mixing rate.
2-3 tablespoons is enough to dilute perfectly with 3-5 gallons of water. You’ll cover a large expanse of 1000 square feet with that amount. This weed killer will last you a long time for sure.
You can use it as a pre or post-emergent herbicide, and don’t have to determine the application timing. It controls both broadleaf weeds and woody plants. It works especially on dandelion plants, clovers, hawkweed, and even crabgrass.
You don’t need to wait any longer than two weeks to see the full results. Some delicate weeds even started to die within 24 hours of the application. For optimal effectiveness, it’s advisable to add a bit of dish soap to the mixture so that the chemical would stick longer to the leaves.
Unfortunately, this weed killer is not potent enough to 100 percent deal with all types of weeds. For that reason, the compound makes great maintenance if you’ve already treated your weeds with a stronger solution.
- Economical choice
- Visible outcome within hours
- Takes effect within two weeks
- Pre and post-emergent weed killer
- Doesn’t handle all weed types
Scotts Turf Builder Weed Killer And Preventer B0784WGDKM – Best Value For Money
This whole package doesn’t fail you whether you need to eliminate dandelions or other broadleaf weeds, fertilizing your listless lawn, or preventing cab grass. It eradicates progressively growing dandelions with ease and gives you a lush, green, and healthy lawn.
This weed killer is designed to take care of the Northern grasses. Apart from dandelions, the herbicide also affects Kentucky Bluegrass, tall rescue, or Perennial Ryegrass.
You’ll get satisfying results even if you have tough soil or cold weather. You’re likely to say parting to dandelions while seeing your lawn greening up after over two weeks of application.
The granulated formula is straightforward to use, thanks to the easy-to-follow instruction on the package. Small pellets make it fairly easy to distribute with a spreader.
As this weed killer won’t blow off all dandelions and grassy weeds in your yard in your first attempt, you’ll need a follow-up application to clear up everything.
- Multi-purpose product
- Generate results within two weeks
- Easy to use
- Kill off a variety of weeds
- Works on wet lawn
- Small volume for its price
Tenacity Turf Herbicide – Best Overall
This herbicide kills dandelions, crabgrass, foxtail, thistle, and other tough-to-control weeds like a charm. The active ingredient, Mesotrione, works to delay these types of weeds from photosynthesizing.
Regarding potency, virtually no herbicides can compare to this product. It kills off plenty of invasive weed types in its way, namely bentgrass, nimbleweed together with everything it claims to cover on the package.
There’s virtually no new weeds keep coming back, and the grass remains intact during and after the application. Despite being slightly expensive, we’re sure your money’s worth considering it takes very little (1/2 teaspoon per gallon) to cover a large area of lawn. It’s a good investment if you don’t want to deal with the undesired weeds season after season.
You have to be patient as this powerful formula works quite slow. It takes a couple of weeks to see the results, but basically, most unwanted plants, including dandelions, will turn white and slowly die.
- Powerful chemical for optimal results
- Deals with a wide variety of weeds
- Economical diluting ratio
- Comes with a syringe for easier chemical extracting
Bonide (BND310) Weed Killer Concentrate – Best For Dealing Different Weed Types
Chances are your lawn or yard isn’t only plagued by dandelions, but other broadleaf weeds as well, calling for a one-for-all solution.
This Bonide weed killer can eliminate over 200 types of broadleaf species, easy- and hard-to-control weeds alike, while leaving your lawn grass intact.
You can also remove all the stubborn weeds like creeping Charlie and spurge. Although these toughest weeds need more applications, we love the fact that virtually every type of unwanted weeds surrender to the product’s potency.
For easy weeds like dandelions, a single application is enough to keep them off your lawn. This concentrated formula delivers pronounced results within 24 hours following the application, with dandelions and clovers withering and wilting.
However, it takes several days, almost a week, before these weeds are completely gone. Despite being quite expensive, the killer delivers what it claimed.
- Excels in broadleaf weed control
- Get rid of unruly, tough weeds
- Speedy results
- Rainproof within hours
- High price tag
Gordon’s SpeedZone Lawn Weed Killer – Best For Wide Coverage
If you’ve got a large property laden with unwanted weeds, use this Gordon weed killer once and for all.
The bottle contains up to 20 ounces of content, sufficient to wipe off an expanse of up to 18.000 square feet of dandelions and other troublesome weeds. If you have a half-acre property, one purchase should last the years of use.
The product delivers quick results while leaving your lawn untouched. It’s a super-fast-acting herbicide with weak and small dandelions showing signs of recession within a day, while more resilient ones take only two weeks to die completely.
Besides dandelions, this pick excels in handling creeping Charlie, clovers, wild violets, poison ivy, and other common weeds. You get the results that compare with those achieved by lawn treatment services without paying a fortune.
This broadleaf weed killer only performs well in cool climes. When the ambient temperature is hot, the chemical can burn the grasses that surround the dandelions.
- Wide coverage
- Pronounced results after a few hours
- Takes only two weeks to kill off dandelions thoroughly
- Effectively kills off other types of weeds
- Only apply to areas with cool weather
- Outlawed in some United States
Spectracide Weed & Grass Killer Concentrate – Best for Lawn Renovation
Want weeds and the existing ornamental turf to start all over again? This Spectracide Weed & Grass Killer is the way to go.
The chemical exterminates all types of grasses, all weeds down to the root. You could see dandelions, grasses, and weeds immediately wilting and dying within just three hours.
It guarantees that the weeds wouldn’t make a comeback for up to 5 months following the application, which means you only need repeating application from 2 to 3 times a year to get a weed-free lawn.
As the product is a concentration, you need to mix it with the water according to the suggested ratio. We think this is the best deal in the category with a considerable volume of 40 ounces for its price.
The only problem with this concentration is that it does a strong chemical odor that permeates the air from a few feet away.
- Effectively eradicate existing lawn
- Keep weeds from popping up for a decent time
- Delivers visible results within 3 hours
- Clear mixing instructions
- Great volume for the price
- Strong chemical smell
Preen 2464083 Garden Weed Killer – Best Re-emergent Killer
This Preen weed preventer will cut the efforts of pulling new weeds to a minimum and ideal for dandelion prevention.
In terms of effectiveness, this product will keep dandelions, clover, and other types of plants at bay for 3 to 4 months after application. It forms a barrier in the soil to prevent weed seeds from germinating.
If you use according to directions, you’re likely to see the dandelion sprouting down to well under 10%. The dandelions that keep re-emerging do that at a very slow rate.
As a weed preventer, you should note that it does nothing to the existing weeds, so you’ll need to pull it out yourself. Although this pick is not for your lawns, it’s safe to use around ornamentals and edibles. The product is a good size for its price, with volume enough to cover 5000 square feet of your garden.
The only quibble about the product lies in the packaging. Some buyers reported the bag cracked easily, giving them the extra work of taping it up.
- Great dandelion prevention
- Prevent weeds from growing for three months
- Great volume
- Doesn’t harm useful garden plants
- Not for lawn use
- Packaging is improvable
Ortho GroundClear Vegetation Killer – Best For Spot Treatment
If you have dandelions and other pesky weeds here and there, you’ll find this Ortho killer pretty helpful.
It’s best to apply it where it doesn’t have any other desirable plants such as driveways, patios, sidewalks, or gravel areas, making it a great choice for spot application.
The product works best on proactively developing dandelions, other weeds, and even grasses with a long-lasting effect of one year. You can leave your garden alone for such a long time between applications.
We love that the killer just takes a while to kick in. Over no more than three hours of application, dandelion leaves visibly shrivel up and wilt. It effectively clears those treated areas within a couple of days after application.
The only downside is that this killer is only effective on warm and sunny days. You’d better not spray if it’s windy to avoid spray drift to the areas you don’t want to kill.
- Ideal for spot-treating
- Long-lasting impact
- Shows results within a short time
- Easy to use
- Works in warm conditions
- Slightly expensive
Take a look at the key considerations below while choosing the best dandelion killer for your lawn and garden.
Selective or Non-selective Herbicide
A selective weed killer controls broadleaf plants without harming other desirable plants in flower beds nearby. This nominee is the go-to herbicide for weeds developing in lawns or around gardens with edible and ornamental trees.
However, selective herbicides are not as powerful as non-selective ones. You might need to repeat applications a few times to get rid of all dandelions completely.
A non-selective herbicide literally leaves nothing in its wake. It does not differentiate between pesky weeds and useful plants, making them not applicable to your grass.
This type is also a favorite choice when it comes to dealing with weeds in cracks on sidewalks or driveways, as there’s virtually nothing you want to keep in these corners.
Pre-emergent Or Post Emergent
Pre-emergent herbicide prevents germinated dandelion seeds from developing. It eliminates dandelions before you even see them. The perfect time for applying are early spring and fall since most dandelions sprout during these seasons.
If your lawn is already infested with established dandelions, post-emergent weed killers are the way to go. For optimal results, you should use this type of herbicide in the late spring when everything is still small and just start growing.
Liquid or Granular
Dandelion killers can come in liquid or granules/pellets. The liquid weed killers bring a higher effectiveness rate because it can better cover the dandelions’ leaf surface.
On the other hand, granular ones only work if the weeds are damp, which requires you to water the lawn or do the job in the early morning when there’s still dew lingering on leaves.
Of the two weed killer types, we would go for the liquid form for its convenience and performance.
Applying dandelion killers outside the optimal temperature threshold can possibly lead to failure. Some products only deliver results in cool weather.
Therefore, you’d better double-check to make sure your herbicide of choice suits your location’s climate.
You might need pet and kid-friendly dandelion killers. Organic products such as Espoma Organic Weed Preventer and Preen 2464083 Garden Weed Killer allow you to eradicate dandelions and all the unruly weeds while causing no harm to your little angels, dogs, or cats.
They consist of 100% corn gluten meal, which is an inexpensive protein source in pet food. You can rest assured using them around your pets.
Dose size or the optimal mixing ratio will partly determine your purchase value.
Potent dandelion killers can significantly affect your weeds with only one or two tablespoons to dilute with two or four gallons of water. Meanwhile, a weaker concentration might need more to give the same effect.
Frequently Asked Questions
We’ve answered a few questions about dandelion killers shared by many people. Check them out to know how to use the product better.
When Should I Mow After Applying A Concentrated Herbicide?
Wait one or two days after spraying the herbicide to mow your lawn. If dandelions keep coming back after you mow, it’s best to wait around four days for another application.
Since the concentrated killer coats the weed’s leaves to take effect, you should allow the foliage to grow back to get the desired results.
When Is The Best Time To Spray Weed Killers?
The optimal time for applying killer is in the morning especially when there is no wind. Weeds absorb herbicides better in the morning than at any other time of the day. As the wind can carry the droplets to the areas you don’t want to kill, you’d better let the sprayer sit idle if it’s too windy.
When Should I Spread Granular Dandelion Killer?
The leaves absorb dandelion killers. For the highest effectiveness, the granules must stick to the foliage to let them absorb the chemicals.
It’s best to apply granules in the morning when the leaves are still moist with dew. If you’re not at all an early riser, you can apply the herbicide whenever you want, provided that you irrigate the lawn first.
How To Apply Granular Herbicides?
You need a spreader to spread granules evenly across the lawn. Depending on the size of the pellets, you can adjust the suitable setting for the spreader. Almost any package will include the information about the right spreader adjustments.
Getting the right amount of coverage guarantees you’ve got everything covered for the best possible results. Otherwise, excessive applications can burn your grass, while insufficient coverage will make you do the job more than once.
How Quickly Does Weed Plant Killer Take To Work?
Most dandelion herbicides take between 2 and 4 weeks to wipe out the weed fully. You can notice signs of recession during the first few hours after application, with the leaves turning yellow and withering. Then you need to wait at least two weeks to see them die out completely.
Dandelions can be troublesome if you can’t find the best dandelion killer to deal with them.
There are multiple types of herbicides for dandelions, selective vs. non-selective, liquid vs. granular, and pre-emergent or post-emergent. Still, the most important thing is you need to make sure they actually work for your lawn. Only then would you be happy with your purchase.
Our top picks are Espoma Organic Weed Preventer and Scotts Turf Builder Weed Killer. They are the most effective and also give you a quick result. Apart from that, they both serve as fertilizer, thickening and brighten up your otherwise unhealthy lawn.