What’s the Best Weed Killer Spray for Your Lawn?

If you're looking for an easy way to maintain a pristine golf course lawn that will make your neighbors envious, look no further than a handy weed killer spray for your lawn. Weeds and pests are the sworn enemies of healthy grass and can be the only thing between you and a lush, green lawn free of pesky weeds.

The most reliable long-term solution for weed control is to start with a healthy lawn. Utilizing lawn-care products like fertilizers and biostimulants can help keep your lawn in top shape and resilient against pests and weeds. Additionally, mowing your lawn regularly at the recommended height for your grass type is a natural way of controlling weeds. When your turf is healthy and flourishing, weeds have difficulty competing with the grass for nutrients and resources.

To target weeds promptly and effectively at the outset, weed killer sprays can be used to kill weeds before they emerge or when they’re actively growing. While manual weed removal can be effective, it can also be time-consuming and physically demanding. Luckily, various weed killer sprays are available that can help you control weeds quickly and easily. Let’s explore the best weed killer sprays on the market, to help you choose the right one for you. 

Related: How to Get Rid of Weeds — Everything You Need to Know


What Are the Benefits of Weed Killer Sprays?

You might wonder, what are the benefits of weed killer sprays for your lawn over other herbicides? Weed killer sprays have a few advantages over more complex forms of weed control for DIY lawn enthusiasts, for example:

Convenience: Weed killer sprays are an easy-to-apply and convenient way to control weeds in your lawn, yard, or other outdoor areas. They’re easy to apply and don’t require much physical labor, saving you time and effort.

Effectiveness: They’re specifically designed to target and eliminate weeds. They contain active ingredients that kill weeds on contact.

Speed: You can see results within days. This is particularly useful when dealing with a large infestation or preparing an area for reseeding.

Cost-effective: Weed killer sprays are a cost-effective solution for controlling weeds, especially when compared to hiring a professional to do the job. 

Versatility: Weed killer sprays can be used in various settings, from lawns to driveways and sidewalks. Depending on your requirements, they can be applied to specific or larger areas.


How Do I Know Which Weed Killer Spray to Choose?

Identifying obscure weeds might be challenging, but knowing what you're dealing with before applying any weed killer spray is crucial. Just like seeing a doctor for a diagnosis before receiving treatment, identifying the specific weed type is essential. Once you've nailed down the weed culprit, you can hit it with the right medicine and restore your lawn's health in no time! 

The most common lawn weeds include dandelions, crabgrass, clover, and bindweed. They’re all a little different, so cross-reference our lawn weed identification guide to ensure you get it right. 

When’s the Best Time of Year to Spray Weeds?

The best time to use weed killer spray is during the weed’s active growing season.. Typically, this occurs in the spring and summer months when the temperature is consistently above 60°F. During this time, weeds are growing, making them more susceptible to herbicides. 

Fall is also an optimal time to tackle weeds. As winter approaches, weeds become more vulnerable and easier to control. But, you don’t need to apply weed killer during winter as most weed seedlings will be dormant beneath the soil, and the ground will be too hard to absorb post-emergent herbicides effectively.

When Is the Best Time of Day to Spray Weeds?

It's best to apply weed killer spray on a dry, windless day when no rain is forecast for at least 24 hours. This ensures that your chosen weed killer spray has enough time to penetrate the weed and is not washed away before it can take effect. Spraying on non-windy days minimizes drift which keeps the herbicide in your target area.

TOP TIP: Follow the manufacturer's instructions carefully on your chosen weed killer to ensure your safety as well as your pets and other plants. 

What’s the Best Weed Killer Spray?

The best weed killer spray you need to achieve a golf course lawn will depend on the severity and type of weed infestation — but we have a killer recommendation. 

Introducing: Mirimichi Green Organic Weed Control. This weed killer spray is a non-selective, fast-acting, and organic weed killer that's suitable for residential and commercial use. 

This 32 oz spray bottle is an excellent alternative to glyphosate-based weed killers and can be used to spot spray lawn weeds, sidewalks, and flower beds. It’s a non-toxic and organic weed killer spray providing control or burndown of weeds and grass, with visible results in just 15 minutes. This non-toxic weed killer spray leaves no harmful residues and is effective in cooler climates. It's readily biodegradable, making it an excellent choice for an organic lawn care product to kill weeds naturally. If you’re looking for an environmentally-friendly weed killer spray, this one’s for you. The spray is designed for easy use, with no dilution necessary. It can also be used for weed and grass control in organic gardening, farmsteads, turf farms, production greenhouses, native grasses, ornamentals, and trees grown for production. 

Additionally, no surfactant (which helps foliar lawn care products absorb better) is required since the herbicide kills on contact. Mirimichi Green Organic Weed Control is safe for use around people, pets, and livestock when used as directed, making it an excellent natural alternative to traditional herbicides.

Mirimichi Green Organic Weed Control 1


Mirimichi Green Organic Weed Control 2


Mirimichi Green Organic Weed Control 3


Related: Safe Lawn Care Products for Pets


How to Spray This Weed Killer 

Mirimichi Green’s Organic Weed Control works fastest in warm, sunny weather but is still effective in cooler conditions. Before you apply, make sure the weeds are grass. Remember, this weed killer spray is non-selective, so take care to  prevent spraying grass or other plants you want to keep. 

TOP TIP: Safety is paramount. Even if your lawn care product is safe to use around pets and people, it might still cause skin or eye irritation. Be cautious and wear gloves, long sleeve shirts, pants and safety glasses during application, just in case.

Use low spray pressure to saturate the weed’s foliage and stems thoroughly. You don’t need to shake or agitate the bottle. Keep applying until you see the weed’s leaves are completely wet but not to the point of runoff.. Because some weeds might be harder to control than others, so you may need multiple applications for complete weed control. 

You can use this weed killer spray for spot weed treatment or broader weed control. Don’t apply this product to weeds when wet; wait two hours before watering your lawn.. 

Other Effective Weed Killer Sprays

We love Mirimichi Green’s Weed Killer Spray because it comes in an easy-to-use spray bottle and has a limited environmental impact — but it’s not the only weed killer spray out there. If you’ve got a backpack sprayer or you’re thinking of investing in one, other weed killer spray options are available.

For instance, one of the best weed killers for crabgrass in cool-season and Centipede lawns is Tenacity which is a post and pre-emergent weed killer that can control up to 45 different species of broadleaf weeds. It’s also one of the best weed killers for dandelions and won’t kill your grass when used in accordance with application instructions. 


The best lawn spray for clover, grassy weeds, and broadleaf weeds in warm-season lawns is Celsius® WG. Coming in wettable granules, Celsius WG is a post-emergent herbicide that requires mixing with water to create a liquid spray. With the broadest spectrum of weed control available, it's specifically-designed to treat a wide range of weeds.

Celsius® WG


For liquid lawn care applications, buy surfactant and a turf mark indicator dye to enhance results and see where you’ve applied the product already.

Spray Safe!

When choosing the best weed-killer spray for your lawn, it's important to consider your specific needs and preferences. Whether you prefer an organic, non-toxic weed killer spray or a fast-acting herbicide, a wide range of products are available. Considering factors such as effectiveness, safety, and ease of use, you can select the right weed-killer spray to keep your lawn healthy, lush, and free of unsightly weeds. Always read and follow the product label instructions carefully to ensure safe and effective use.

Browse our range of highly-effective liquid and granular weed killers today to get a golf course lawn.