They’re best for treating the whole lawn, either in the spring or autumn. They’re ideal if your lawn has quite a few weeds inhabiting it. The Weedol Ultra Tough WeedKiller Liquid Concentrate is arguably the easiest weed killer to apply of all the ones I tested. It doesn’t come pre-mixed, but it can be diluted in either a watering can or sprayer. Overall, this is certainly one of the best weed killers for getting rid of tougher weeds and tree stumps, but it does need to be used with patience as the results aren’t instant. Also, it offers quite good value for the price, with the 1 L bottle containing enough formula to cover up to 332 m² when diluted. Ordinarily, you should only apply a concentrated weed killer to your lawn once a year, either in the spring or in the autumn. As any other total weedkiller, Resolva Pro also controls grasses, including Couch grass and annual meadow-grass.

Whilst Resolva Weed Killer is powerful, it often takes several days to see results. Weeds are more likely to die after 4 – 7 days than 24 hours. However, after a week, once they’re dead, they’re generally dry enough to simply pull out of the ground. It seems to work best in hot, dry weather, and certainly shouldn’t be applied when rain is forecast for the same day; the longer the weed killer stays on the weeds, the more effective it will be.Gloves and covered shoes are needed again and I’d recommend wearing tough gardening shoes because I dropped the unit on my foot and it left a bruise. In actual fact, the active ingredients in professional weed killers are exactly the same as the ones you’ll find in weed killers for home use. Like many off-the-shelf weed killers, it contains glyphosate. While this is strong enough to kill weeds, it’s also strong enough to harm pollinators and pond life. Having said that, treated areas can be replanted 7 days after application, which isn’t bad going for a weed killer. I think we all agree that having the odd weed here and there is par for the course in the garden. However, those pesky plants can spread so rapidly, they easily have the potential to invade entire lawns and flowerbeds.

Following spraying, do not cut grass for at least one day after treatment and ideally leave the sprayed area uncut for as long as possible Doff is not a weed killer for lawns or flowerbeds where you have lots of plants growing as based on the results of my testing, it will take out everything. This is the strong stuff and I feel it’s best suited to persistent weeds or situations where you need to destroy all plant life in a large area so you can start from scratch. You might want to consider the various types of weed killer before settling on one. If you’re targeting weeds on your lawn, the best option will be a selective weed killer that won’t harm the grass, only the weeds.There are a couple of reasons why this pump spray weed killer speeds up the process of getting rid of pesky weeds, and it comes down to both its effectiveness, and its straight-forward application style. Selective weed killer is usually safe to use on lawns as it won’t kill off the grass. It will only target and kill specific types of plans (eg. weeds). Selective weed killer is normally clearly sold as being lawn safe. Therefore, if a weed killer doesn’t mention being safe for lawns, don’t use it on grass (unless you don’t mind the grass getting scorched). Resolva Lawn Weedkiller Extra Concentrate should be applied from April until the end of September on lawn weeds that are actively growing

A. Resolva Lawn Weedkiller Extra Concentrate is for use on lawns only , and is therefore not recommended for other areas. We recommend Resolva 24H® or Resolva Xtra Tough for total weed kill, including grasses. Glyphosate – kills the majority of plants, including perennial grasses, so it’s not one that you want to accidentally get on the lawn or flowerbed. It is effective at killing well-established weeds because it works from inside the weed itself. After being absorbed by the leaves and stalk of the weed, glyphosate spreads to the rest of the plant, including the roots. In recent years, it’s developed a reputation for being dangerous; however the jury is out on a definitive conclusion. Some studies have found it to be carcinogenic, whilst others consider it safe for humans to use as long as the instructions are followed. Glyphosate is also thought to negatively affect wildlife such as bees and aquatic life. It can stay in the soil for a long time as well. Pelargonic acid is the most commonly found active ingredient in organic weed killers. It’s a naturally occurring acid in geraniums. This acid is generally considered effective at controlling the growth of smaller broadleaf weeds (under 15 cm tall). Alternatively, residual weed killers will stop all plants from germinating, and non-selective weed killers will kill everything they encounter . Therefore, these are best used on patios or highly weed-ridden areas. Here we will look at the ingredients of weed killers, based on what type of weed killer they’re most commonly used in. There are selective weed killers (only targeting certain plans), non-selective weed killers (not fussy about what plants they kill) and organic weed killers (using ingredients from nature).

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As well as tough, woody weeds, SBK is also capable of getting rid of tree stumps; a diluted solution needs to be poured into drilled holes in the wood which turns the stump soft and mushy after about a month. It’s important to note that the chemicals in most weed killers are not as effective during warmer temperatures. Don’t leave bare soil. Weeds thrive in open spaces in the soil. Plant vegetables, flowers and shrubs close together to minimise open areas where weeds can pop up. For example, an amateur weed killer concentrate might take 1 part concentrate to 3 parts water to make the desired strength.

Value for Money: When assessing value for money, I identified how many litres of weed killer you received, the treatment area it covers, and the price point. Products that covered a higher surface area and still retained their effectiveness (for example, a 2 L bottle able to cover over 3000 sqm) were rated higher than those that only covered a smaller surface area for the same – or similar – price. I also assessed the additional features that come with a weed killer, as these products give you better value for money.However, don’t expect them to die within 24 hours as other weedkillers claim. It can take a week or so to see results. However, this is due to the fact that it doesn’t contain Glyphosate. Resolva Weedkiller is a 5-litre ready mix with an integral pipe and sprayer. It has a jet and a spray function which is good news for adaptable weedkilling.