Weeds are generally very pesky.
However, crabgrass is probably one of the worst weeds to deal with because it spreads rapidly.
In fact, if you don’t take care of the problem quickly, you can find your entire yard overrun by crabgrass.
So what's the solution to the invasion of the weeds? Finding the best crabgrass killer available.
Weed killing solvents can put an end to any problem (as well as any weed issue) in a snap.
However, not all sprays and solutions are created equal. Every yard may require a particular treatment method depending on the kind of plants in your garden and whether you have pets. Keep reading to discover which treatment is the best option for you.
Bayer Advanced All-In-One Lawn Weed Killer and Crab Grass Killer Concentrate
The Bayer Advanced All-In-One Lawn Weed concentrate provides the best crabgrass control.
In most cases, this product will kill crabgrass without killing your lawn.
Additionally, the Bayer crabgrass killer will also kill 200 other species of weeds, so it's perfect if you having multiple kinds of weeds growing in your yard.
An hour after application, this product is also rainproof, so you never have to worry about reapplying after the rain.
However, keep in mind that this may not kill weeds on the first application. To get the full effect you must reapply one to two times.
More importantly, you also have to give the solution time to work. Very rarely will it kill weeds overnight but, if you follow the application directions, weeds will start disappearing within days.
Ortho Weed & Crab Grass Killer
The great thing about the Ortho Weed and Crabgrass Killer is that it’s specifically designed to kill persistent weeds like crabgrass and dandelions.
Since it’s designed to target weeds at their roots, it also won’t do damage to your lawn (unless, of course, you over apply it).
Although this is the best crabgrass killer made by Ortho, some crabgrass killer reviews suggest that in order to get rid of this pesky weed, multiple applications (about 2-3) will do the trick.
BASF Drive XLR8 Herbicide
There’s a very good reason why the BASF Drive XLR8 is more expensive than other weed killers on the market. If you’re wondering how to kill crabgrass quickly and effectively, this is the solution.
This particular treatment is perfect targeting crabgrass because it’s fast, effective, and lasts for a long time. In fact, this particular product can remain effective even 45 days after application.
Within the first application, this product will usually get the majority of weeds, making the best crabgrass killer for fast removal. You may just have conduct one or two more applications in the future to eliminate especially tough weeds. To get the best effects, use this product with Microyl Crop Oil.
Jonathan Green & Sons
This weed treatment option isn’t just designed to kill weeds, but also to prevent their growth.
The Jonathan Green and Sons crabgrass preventer provides protection for your lawn against weeds for an entire season, and it gives users a peace of mind since it functions as crabgrass control method.
Even better it works in both cold and warm weather, so you can stop weeds from growing before the spring season.
Additionally, this product is specially formulated for lawns, so it will keep weeds out without killing your lawn.
Central Garden & Pet Image Crabgrass Weed Killer Granules
Not only do the Image Crabgrass Weed Killer eliminate crabgrass, but they also stunt its growth.
All you have to do is add one of the granules packets to a gallon of water and spray away.
This is one of the more effective products on the market, providing almost instantaneous results. It’s also one of the best crabgrass killers that are non-toxic to pets, so you don’t have to worry about this product having poor health effects on your pet.
To get the best results, you want to apply this during a dry day. Make sure that rain is not in the forecast for the next day as the water can actually wash off the solution.
Bayer Advanced Crabgrass Killer for Lawns Ready-To-Spray
The Bayer Advance crabgrass killer is designed specifically to kill crabgrass.
This particular formula is so strong, it’s almost professional grade, with the ability to kill even tough weeds such as Japanese Stiltgrass. Additionally, it’s especially sensitive to different types of grass, such as Kentucky Bluegrass, and will rarely ever damage it.
While you may start seeing some results relatively quickly, it can sometimes for the weeds to completely die off. Typically, the weeds will completely vanish within 4-10 days.
Avenger Organic Weed Killer
The AVENGER Organic weed killer is a non-toxic solution that’s perfect for individuals worried about the effects a weed killer solution can have on children, pets, and other plants.
This natural crabgrass killer works because it’s made with citrus oil, a natural property that dehydrates plants.
There are a couple of things to note about this product, however. Firstly, while it’s great for weeds that are grassy in nature, it sometimes struggles to kill tougher, deeply rooted weeds like spurge.
Additionally, unlike other weed killers on the market, the AVENGER weed killer is non-selective, meaning that it can and will kill any plant it comes into contact with. For that reason, it’s probably not the best option for your lawn.
Bonide Weed Killer Granules
Although the Bonide Weed Killer Granules are specifically designed to target certain weeds—among them being crabgrass—it's highly effective, working as both a weed killer and preventative measure.
Like the Scotts crabgrass killer, this is the perfect weed killer for your lawn because it eliminates weeds without ruining the grass.
When using this product, keep in mind that applying the granules to a wet lawn (such as after it rains or in the early morning) will help to kill the weeds. Applying it to a dry lawn works more to suppress the growth of other weeds.
With the same active ingredient as Drive XLR8, Quinclorac is widely considered on of the best solutions for crabgrass.
Although it can take up to 10 days or more to work, this herbicide is especially effective because it attacks weeds at their roots.
It’s also perfect for using on your lawn (when used as directed), eliminating problem weeds without having dramatic effects on the grass.
What does a crabgrass killer do?
Like a lot of other weed killers, crabgrass killers get rid of weeds and (depending on the formula) can also stunt their growth.
While these are particular herbicides are formulated to target crabgrass, the best crabgrass killers also have broader uses, with many having the capacity to kill 200 weeds or more.
Some of these herbicides work best on lawns, such as granules, and are specifically designed to suppress the growth grassy types of weeds. Since these products are “selective,” they can put an end to these weeds without killing the grass in your lawn, in essence, functioning as a kind of crabgrass control.
How does crabgrass killers work?
How a crabgrass killer works depends on the kind of formula used. Some post-emergent measures, actually create a chemical imbalance in the weed.
The herbicide acts like a chemical called Indole Acetic Acid (or IAA). Too much IAA actually forces the plant to rapidly grow (which explains why sometimes it can seem like the plant is still growing after application) until the plant literally gets too big for its own good, at which point it will die.
Other types of herbicides work by blocking photosynthesis, which not only blocks off the weeds energy supply but also leads to a build up of toxic chemicals inside the weed, which quickly kills it off.
Finally, natural herbicides, like citrus oil, work by stripping the weed of moisture, essentially dehydrating the weed to death.
How to apply crabgrass killer on your lawn?
Know that you’ve found the best crabgrass killer, you always want to follow the instructions that come with your particular product. Applications can vary depending on the kind of formula being used. For example, some products are concentrates, which need to be diluted with water and then applied directly to the plant in spray form.
Others are granules, which you simply spread on your lawn using a spreader. Since most granules act as pre-emergent solutions, you may have to apply it to wet grass in order for it to kill weeds, depending on the formula.
The most important thing to keep in mind when applying any herbicide, however, is to never over apply the treatment—especially on your lawn.
Make sure to carefully follow the instructions listed on your product, and wait for the suggested amount of time (anywhere between one week to 45 days) before applying the second application if it's needed.
How long does it take to effect?
Crabgrass killer can take anywhere between anywhere between 1 day to 10 days or more to work, depending on the product.
Since grassy weeds are typically tougher to kill because they spread faster, you may find it necessary to make several applications over a period of weeks or months.
Following the product instructions should give the best and fastest results.
What are the types of crabgrass killers?
If you’re not sure how to kill crabgrass, there are types of crabgrass killers: pre-emergent and post-emergent.
Pre-emergent killers prevent the growth of more weeds. Typically, they work by stopping the germination process of seeds. When seeds come into contact with this formula (usually in the form of granules) they become unable to germinate and therefore grow.
On the other hand, post-emergent solutions work to terminate weeds after they’ve already started growing.
Using these two types of treatments together can significantly reduce any weed problem over time.
How to use crabgrass killers without killing grass?
The big secret that most people want to know is how to kill crabgrass, without harming other plants.
The key to not destroying your lawn is to apply these products in moderation.
Although many crabgrass killers are selective, too much of these solutions can kill your lawn.
Additionally, carefully read the warnings that come with your product. Many herbicides of this nature cannot be used with particular grass types (such as St. Augustine).
If you’re not sure if a particular product will work for your lawn, try testing it out on a small patch and carefully monitor the effects. If, after a few days, you see no changes to the grass, continue using the product.
On the other hand, if the grass begins turning yellow, it’s a sign that you need a different product.
How frequently should you apply crabgrass killer on your lawn?
Remember, when it comes to herbicides moderation is key.
Ideally, you want to be applying both pre and post measures one every season. However, for really big weed issues this can be simply not enough.
In such cases, the best idea is to not apply more than once every 45 days. Applying prior to that time frame can actually lead to a build up of the herbicide on your lawn, which can kill your grass.
How long before pets can walk on the grass after applying crabgrass killer?
As with most herbicides, pets should be able to go out on the lawn after the product has dried.
Of course, this matter can be greatly dependent on the weather. On really hot days, herbicides can take as little as half an hour to an hour to dry. On cooler days this can take as much as 4-6 hours.
The best way to know if the lawn is safe for your pet is to simply test the grass before letting them out. If still seems damp, it’s probably a safer bet to wait for more time.
As a rule of thumb, it’s usually pretty safe to let pets out on the lawn 24 hours after application.
Crabgrass killers are a great solution to getting rid of a very stubborn weed. In fact, regular use of these products, such as once every season, can significantly reduce the weed’s numbers.
Keep in mind that preventative measures, such as pre-emergent treatments, are especially worth their weight in gold when it comes to battling weeds because it stops their growth.
Using a combination of these treatments can save you time, money, and a ton of frustration. It can also save you the effort of manually picking weeds.
So don’t wait until the problem starts to spread. Select a treatment that works for your yard and get back to addressing more pressing more questions like does grass seeds go bad.