We're an affiliate
We hope you love the products we recommend! Just so you know, we may collect a share of sales or other compensation from the links on this page. Thank you if you use our links, we really appreciate it!
There’s no shortage of weed killers in the market. But you may end up spending a lot more than you have to if you’re trying to clear weeds in a large area. This post rounds up the best weed killer for large areas.
Weeds can be your worst nightmare if you’re a homeowner with a large yard. The weeds ruining the yard’s look are only the beginning of your worries.
Weeds also compete with grass for space and nutrients. The dying grass attracts insects, and before you know it, your home will have a pest problem. The weeds also sap the soil of minerals, making it difficult to grow grass and other plants on it.
If you have crops in the area, weeds can cut the yield by 45%.
Weeds are bad news, and getting rid of them can be doubly difficult if they’re growing across a large area.
But here’s the good news:
Using the right weed killer can help you get rid of weeds, and consistent use over time can rid the area of weeds for good.
Table of Contents
7 Best Weed Killers for Large Areas
1. Spectracide 96451
2. BioAdvanced 704140
3. Natural Armor
4. Ortho GroundClear
5. Ortho WeedClearLawn
6. Spectracide Weed & Grass Killer2
7. Southern Ag 01113 Brush Weed Killer
1. Spectracide 96451
The Spectracide concentrate makes about nine gallons of weed killer. Depending on the density of the weeds in the area, you should cover between 1000 and 2000 sqft with it.
The formula makes it effective on hardscape, so it’s undoubtedly one of the best weed killers for driveways and patios.
This Spectracide product shows results in three hours of application, and you can replant in the area after just a day of application. What’s more impressive is that the product is rainproof in 15 minutes.
The best part? The company guarantees that you will see results with the product, or you can get your money back.
2. BioAdvanced 704140
If you’ve tried some weed killers before and weren’t satisfied with the results, the BioAdvanced weed killer will not fail to impress you.
It is effective on over 200 species of weeds, including crabgrass, clover, and dandelion. These weeds start to multiply every other season, but since the BioAdvanced weed killer kills at the root, you shouldn’t see as much growth after application – if any.
The 40oz bottle it comes in is one of the reasons why it is one of the best weed killers for large areas. You only need to mix 3.2 ounces of the product per gallon of water. A gallon of the spray will treat about 500 square feet. So, one bottle of this product will treat up to 6250 square feet, which is impressive.
The EZ-Grip One Touch sprayer enables you to attach the sprayer to your garden hose and easily apply the spray. The spray is rainproof in one hour, which means you can use it any time of the year.
3. Natural Armor
Many of the weed killers available in the market have glyphosate in them. The chemical causes a range of short- and long-term health effects and also pollutes the soil.
If you’re looking for an all-natural option that is as effective as the other options, the Natural Armor weed killer is the best grass and weed killer for large areas.
In addition to being chemical-free, it is effective on a wider variety of weeds. It can clear off over 250 species of weeds. You also don’t have to worry about it hurting your pets.
The company promises that the weed killer results in hours and hundreds of happy customers back up its claims.
The 30-day money-back guarantee is a testament to the company’s confidence in its product.
4. Ortho GroundClear
The GroundClear Super Concentrate by Ortho is one of the most effective weed killer concentrates money can buy. With the small 32-ounce bottle, you can make 6.4 gallons of weed-killer solution. That solution can cover up to 2,240 square feet.
The solution is formulated for hardscapes and patios, so if you have a large driveway, this is among the best weed killers for a large area.
Ortho’s Super Concentrate is effective on crabgrass, dandelion, oxalis, nutsedge, and most other common weeds. It starts eliminating the plants right on application, and you should see results a few hours after application.
Fifteen minutes after spraying, the solution is rainfast, so you don’t have to wait for a sunny day to apply it. The sprayed area will be completely free of weeds within two weeks.
5. Ortho WeedClearLawn
While one bottle of the WeedClearLawn Concentrate can only clear a thousand square feet of space, it’s one of the most affordable options on this list.
You can buy more bottles and cover more space, and it’ll still be cheaper than a bottle of some of the options on this list.
The concentrate kills over 250 different species of weeds, including dandelions and chickweeds. It’s not as impressive as some of the other options when it comes to rainproofing. If it rains within an hour of application, it will wash away.
But it shows results in a matter of hours, and if you use it as the company recommends, it won’t kill the grass or other plants in your lawn.
That said, you should keep your pets off the sprayed area until the solution has fully dried off.
It’s most effective in spring and fall since the weeds are young in these seasons and hence easier to get rid of. The low price and high potency make it one of the best weed killers for large areas.
6. Spectracide Weed & Grass Killer2
Getting a weed killer concentrate is the most effective way to cover a large area, but it requires you to buy and use a sprayer. If you don’t want to invest in a sprayer, you can buy a readym+-ade solution like the Spectracide weed and grass killer.
It is the most reasonably priced of the three 1.33-gallon sprayers on the market. Additionally, it makes no compromise on effectiveness. It is rainproof in fifteen minutes and shows results within three hours.
What’s more impressive is that you can spray it on any surface and you can plant it on soil a day after spraying. Its sprayer features a long wand with a comfortable grip, and one-touch operation, removing the need for repeated manual pumping.
These attributes of the weed killer make it one of the best grass and weed killers for large areas.
7. Southern Ag 01113 Brush Weed Killer
If you have thick vines and brush on your property, the Southern Ag Brush Killer is the right option for you.
In addition to brushes and vines, it can kill woody plants and broadleaf weeds growing on all types of surfaces.
You only need to use eight gallons for treating 500 sqft, which means you’ll be able to cover up to 2000 sqft with it. You can also clear stumps with it, making it one of the most impressive options on this list.
There’s no need to dilute the solution with water. You can put some in a sprayer and apply directly. It’s difficult to find another comparable product, making this one of the best weed killers for large areas you can buy.
Conclusion: What is the Best Weed Killer for Large Areas?
There’s no “one-size-fits-all” weed killer that we can recommend. Different people have different budgets and need a weed killer for different kinds of surfaces. The size of the property and whether you have a sprayer also influence your decision.
What you can be sure of is that you’re now acquainted with all of the best weed killers for large areas available in the market.
To find the right product, all you have to do is weigh out the pros and cons. Learning when is the best time to spray weed killer will help you get the most out of weed killer.
