The standout feature is how easily the product spreads. The bottle is designed with a convenient shaker cap: Just shake it over the intended area, add water, and you are done. You needn’t worry about timing, as you can apply Preen at any point during the year. It is also safe to use around vegetables, bulbs, and over 200 other flowering plants. Many weed killers contain harsh chemicals; however, Green Gobbler Vinegar Weed and Grass Killer is glyphosate-free and made without synthetic ingredients. Derived from corn, it can take care of unwanted crabgrass, dandelions, clover weeds, white clover, mold, and more. You can expect to see visible results in less than 24 hours, and the manufacturer offers a 100 percent satisfaction guarantee. Because it is vinegar-based, it is not weed-specific and can harm all grass and plants. Make sure you use it only in areas where weeds are present, not plants you want to keep. Herbicides vary in toxicity. Glyphosate is one of the best-known weed killers and has recently been identified as harmful to our waterways and health. Some ingredients, such as vinegar, are eco-friendly but still harmful! It’s important to remember that herbicides are meant to destroy plant tissue, so always use caution when applying near non-targeted plants. Spectracide is a popular choice for areas where quality results count, such as golf courses, sports stadiums, and turf grass. This weed killer earns our top spot on this list because it is highly effective and can be applied to many different areas around your yard, including flower beds, trees, and even hardscapes, such as walkways and patios, to keep them looking their best. We also appreciate that you can expect results the same day it’s applied, and it is weatherproof within 15 minutes, so you don't have to wait for a clear day to do the task.

Keep in mind that this effective weed-killing product kills all plants at the root, so you want to avoid using it on plants and grass you want to keep (or cover them up if need be, as we did while testing). It's also recommended not to mow the treated areas for at least a week, but you can plant new flowers or shrubs after 24 hours. This product should not be used near edible plants. Like all weed killers, make sure to keep it out of reach of kids and pets and wait a full 24 hours to dry before letting them near the treated areas. Preen Garden Weed Preventer is designed to prevent weeds from popping up in your flower beds, around the base of trees, or even in the vegetable garden. As a pre-emergent, its patented blend includes a plant fertilizer that helps keep your flowers blooming and vegetables growing—all while keeping weeds from sprouting. Offering protection from nearly 30 broadleaf weeds, its granular format makes it less likely to blow onto your lawn.

The best weed killer you can buy in 2023

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