Roundup 119944 Powerful Lawn Weed Killer - Glyphosate-Free - CONCENTRATE - 500 ml, Blue

Product Information

Not all weed killers are the same. Some are designed to work on a specific species of weed whereas some are considered to be more of a general purpose weed killer. There are even differences in how each product neutralises weeds as well as a vast difference in the ingredients used to complete the task. Systemic weed killers: Systemic weed killers are usually taken in through the foliage, and from there spread through the rest of the plant to its roots. This gives the weed killer a decent fighting chance of killing off the whole plant. They usually take longer to act, but are effective against the plants they’re designed to kill. What’s more, they don’t hang around in the soil afterward, which means it’s safe to plant again.

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Plants have hormones too, and these chemical hormones are linked to natural growth. Some weed killers contain plant hormones, some natural and some synthetic such as 2,4-D (Trimec). When these products are applied to the plant, the hormone is absorbed and confuses the plant’s own growth system. This leads to growth deformities before eventual death. Additional Information Its real strength, though, is that it can control weeds that other weed killers tend to struggle with, including horsetail/mare’s tail and ground elder, as it did on an overgrown bank and a disused veg bed where other weed killers had failed miserably. It’s a good bet if you need a powerful weed killer but you don’t want to spray something really nasty on your plot. You should wait at least 4 hours before re-entering a treated area. Also, stay away from pets while you're applying your product. It's best practice to stay out until you know that all plants have dried up - which can take anywhere from 30 minutes to 3 hours, depending on conditions. Some weed killers start to work within 24 hours, while others might take a week to have much impact. Don’t be tempted to reapply without reading the instructions. If, after the quoted time, you still have persistent weeds hanging in there, there’s usually no harm in giving them another dose to finish them off. Is there an alternative? There are also some products on the market referred to as “natural” weed killers. Corn gluten is one ingredient which you’ll find used in some selective, pre-emergent weed killers. Corn naturally secretes a chemical that kills other nearby plants. That chemical is found in significant concentrations in corn gluten. However, it is generally not effective against common lawn grasses which is what makes it a great option for pre-emergent weed control in lawns.

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Roundup works best while you are applying it to the plants that are growing actively. Usually, this happens in the fall as plants store energy and in the springtime of the year when plants break dormancy. However, Roundup is effective throughout the season against plants. Also, it is pretty easier to look for the right application conditions throughout the summer as compared to fall or spring. The last type is an industrial weed killer also known as “soil sterilisers”. These products are uncommon and are rarely sold in the UK. If you do come across these products, we suggest you steer clear. They are designed to kill everything in the area and will remain in soil for several years. These chemicals can also easily find their way into nearby water courses which can devastate any water-based ecosystem.

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According to the label, they recommend using it on dry, warm days. If it's about to rain, don't worry - all of the products should dry in 30 minutes to 3 hours - some even faster. Roundup will dry in 30 minutes to 3 hours. Usually, results are visible within 12-24 hours of application. You will see the weeds yellowed and wilted. And within a week, you'll notice them turning dark brown and then dying. But depending on weather conditions may take longer.Gardeners can apply herbicides like Roundup when the air temperature remains between 60 degrees and 85 degrees. Fall and spring seasons are too cool for effective herbicide application. You should avoid windy weather conditions and also when you are expecting rain while applying the herbicide.