To seed your lawn after using a pre-emergent weed and feed, you may have to wait between 1-6 months, with 2 months being the average wait time. This is due to the wide variation in the duration it takes for different types of pre-emergent herbicides to degrade in the soil. A herbicide like 2,4-D decays in as soon as four weeks, but you may have to wait for six months to plant grass seed on a lawn treated with Atrazine herbicide. Safety and Environmental Impact: It was important to assess the overall environmental impact of each weed killer as well as the risk to the user’s safety. As a result, any product where the nozzle leaked was rated lower, as this risked harm to the gardener using it. Products with excessively harmful chemicals, such as Glyphosate, were marked down, as these pose a risk to wildlife.

Finally, look out for a weed killer that comes with a pressure sprayer to make application easier . Some weed killers will need diluting which can be time consuming; however, they often work out cheaper. May affect edible plants. The tiny amount of debris on the soil surface does not damage new plants if it is applied correctly and carefully. However, you don’t want such residues to be eaten by plants you intend to eat, so I’d wait a few days before planting herbs and vegetables; Choose a product that’s easy to apply. Lawn weedkillers are available to spray on, apply with a watering can and dribble/sprinklebar, and less frequently as granules that are scattered on the surface Many weed killers will damage grasses that are less than three months old. Things like Weedol should not be applied until the grass has reached three months, while Resolva will take a full six months before it can be applied to grass. If weed grasses have overtaken your lawn, it is better to consider removing the turf entirely and starting from scratch. Removing weed grasses

Remove rosette-type weeds, such as dandelions, daisies and plantains, usinga hand fork or weeding tool. There are various designs of weeders, including some that can be used from a standing position,so you need to find whichever suits you best. They usually aim to help you remove the long tap-root of plantssuch as dandelions – if the root is left behind, the plant can often re-sprout A lot of products kill grass as well as weeds; however, there are a few weed-killer gems worth knowing about if you’re keen to clear your lawn without damaging it. This Weedol Lawn Weed Killer is successful at removing clover, dandelions and other unwanted culprits from lawns, without scorching or killing off the grass. This makes it one of the best selective weed killers, making it possible to carry out targeted weed killing on the lawn!

Method 2: Plants usually easily killed using one or two applications of weedkillers containing 2,4-D plus mecoprop-P or 2,4-D plus dicamba. Examples include Doff Complete Lawn Feed, Weed & Mosskiller,Vitax All in One Lawn Feed, Weed & Mosskiller or Westland Aftercut All-in-One Feed, Weed & Mosskiller (also contains fertiliser and mosskiller).

Fertilizing– fertilizing at the right time helps new turf become well-established and sturdy, thus more resistant to weeds. The best time to start fertilizing a new lawn is 6-8 weeks after planting. You don’t want to start fertilizing too soon, as the fertilizer may burn your young seedlings. Alternatively, look in our Weedkillers for gardeners document– sections 1b, cand d–for the corresponding product trade names (such as dicamba/mecoprop-P is sold as ‘Resolva Lawn Weedkiller Extra’) Glyphosate is a non-selective, systemic weed killer. Starting at the roots and working up to the stems, this destroys the whole plant. The herbicide leaves little trace of the weeds that have died in the soil. Grass, weeds, and other unwanted plants can be affected by this chemical. However, after the herbicide has been properly consumed by the soil, it has little effect on other plants. 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. If your weed problem is bigger than just dandelions and clovers, this Vitax SBK Brushwood Tough Weed Killer is a bit more heavy duty. It can see off hardier plants like brambles, nettles and thistles, and is the best weed killer for clearing overgrown, unruly spaces.