10 Best Kills Weeds Not Flowers 2026 in the United States

The Scotts Turf Builder Bonus S Southern Weed & Feed2 is designed to selectively target common Southern weeds such as dollarweed, clover, and dandelion, making it ideal for those looking to maintain a healthy lawn without harming specific grass types. It also serves a dual purpose by fertilizing the grass, promoting strong and deep root growth which helps the lawn to withstand Southern stressors like heat and drought.

This product is particularly effective on St. Augustinegrass, Centipedegrass, Zoysiagrass, and Carpetgrass, and covers a substantial area of 10,000 square feet with one 34.48 lb bag. The immediate watering requirement after application ensures the product starts working right away, though it may be a bit inconvenient for some users. The product should be applied when both grass and weeds are actively growing, which limits its usage to certain seasons.

This product is a good choice for homeowners in the Southern US who need a reliable solution to control weeds while also nourishing their lawns.

The Spruce Weed Killer Spray is designed for those looking for a selective, easy-to-use weed and grass killer that won't harm flowers or other desirable plants. One of its key strengths is the worry-free formula, which is safe for use around people and pets, provided it is used as directed. This makes it a great option for family homes with pets or children. The inclusion of essential oils and surfactant as active ingredients points towards a more environmentally friendly product compared to harsher chemical options.

It delivers visible results quickly, often within an hour, by breaking down plant cells to dehydrate the weeds. This makes it effective against a wide range of weeds, including dandelions, crabgrass, and clover. Its application is straightforward with the Snap and Spray Kit, featuring a reusable wand that minimizes mess and ensures an even spray. However, as it is a non-selective herbicide, care must be taken to target only the weeds and avoid desired plants.

While it is rainfast, ensuring it works even after a shower, it might require reapplication for persistent weeds. Though it covers up to 400 weeds, larger areas might necessitate additional refills, which could increase costs. Its eco-friendly ingredients are a plus for the environmentally conscious, but may not be as potent as stronger chemical herbicides. Users should weigh the convenience and safety of the formula against the need for potentially more frequent applications in tougher weed scenarios.

The Roundup Weed & Grass Killer₄ Refill is designed to tackle tough weeds and grasses, making it suitable for use in and around flower beds, trees, driveways, and walkways. One of its key strengths is its fast action, being rainproof in just 30 minutes and showing visible results within hours. This makes it highly convenient for those needing quick results, especially in variable weather conditions. The ability to plant 1 to 30 days after application adds flexibility for gardeners planning their landscapes.

Its active ingredients include Triclopyr, Triethylamine Salt, Fluazifop P-Butyl, and Diquat Dibromide, which are effective but may raise environmental concerns if not used carefully. This product covers a decent area of 375 square feet per 1.25-gallon refill, making it efficient for medium-sized gardens or yards. However, as a non-selective weed killer, it can harm desirable plants if not applied with precision. Users need to be cautious and follow application instructions closely to avoid damaging flowers and other wanted plants.

With a high customer rating of 4.5 out of 5 stars from over 3,500 reviews, it is well-received by many users for its performance. Its refill format also offers a cost-effective solution for regular maintenance. While it handles broadleaf weeds and grasses effectively, users should consider its environmental impact and ensure proper use to minimize harm to surrounding plants and wildlife.