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You are here: Home1 / News2 / News3 / How to repair a lawn full of weeds

How to repair a lawn full of weeds

A lawn full of weeds is not a pretty sight. Add in some brown and bare patches, and it’s all pretty depressing. But don’t worry – you can repair it and have a beautiful green lawn.

Below are some simple tips for repairing an ugly lawn. Before you start, it’s worth remembering that repairing a lawn takes time and patience. There’s no quick fix. However, take it step by step, follow these instructions and you’ll have a lawn to be proud of.

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6 tips on repairing a lawn full of ugly weeds

  1. Killing the weeds. Some people are happy to use herbicides, others prefer natural alternatives. However you like to do it, choose a good weed killer and be thorough when you spray it. Of course, some old-fashioned digging out may also be required.
  1. Repairing your lawn. Firstly, don’t start with the grass seed while you’re still wielding the weed killer as it will stop new grass growth in its tracks. When you’ve killed the weeds, prepare the lawn for seeding by lightly raking it and sprinkling it with quality peat-free top soil or compost. Once the seeds are sown, add another layer of top soil or compost to help keep the birds away.
  1. Watering your lawn. Your lawn needs a good amount of water, especially when you’re repairing it. The great British weather is pretty unpredictable, so while it’s likely that you might not have to get the hose out very often, consider this possibility if the sun comes out! If you need to use a sprinkler, invest in a good quality one – it’s makes a big difference. To minimise your water consumption, a water butt is also a good idea.
  1. Feeding your lawn. Don’t be afraid of giving your grass, new and old, a helping hand. A good organic fertiliser will help you on your quest for a beautiful green lawn. Regular feeding and fertilising is recommended; it will help nurture the kind of strong, healthy grass that you want and keep weeds in check. Much depends on the weather but, as a rule of thumb, you should be feeding your lawn every six to eight weeks.
  1. Mowing your lawn. How you use your lawn mower is an important part of lawn repair. First of all, it’s important to make sure that your mower blades are sharp. Blunt ones will make your job much harder. Don’t cut the grass too short; this can weaken or kill the grass and leave it vulnerable to a fresh invasion of weeds. It’s also a good idea to scatter your grass cuttings back on the lawn – this helps return nutrients to the soil.
  1. Pest patrol. This may sound obvious, but it really does pay to regularly check your lawn for pests especially when you’re repairing it. Regular maintenance is important. The sooner you spot any pests, the sooner you can attack them with the relevant solution.

Timing is also important. It’s best to start the process of repairing your lawn in spring or autumn, when it’s a little cooler. If it’s too hot or cold, it’ll be much harder for you to get the beautiful lawn you are after. Still struggling with weeds? Check out our top 5 tips for effective weed control.

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Fantastic service from start to finish. Terry was professional, knowledgeable, and kept me well informed throughout the entire process. The job was highly labour-intensive, as all materials had to be carried in and the old fencing removed from a very awkward location in relation to their van, yet nothing was ever too much trouble. Terry and his co-worker Samantha are absolute grafters who worked incredibly hard, and the results speak for themselves. I’m extremely happy with my new fencing and wouldn’t hesitate to recommend them.
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I had delivery of my gorgeous garden swing this morning. How nice to be taken by surprise that Knight Fencing really delIvered on it's promise! Recent experience has shown me that not all companies do this. Since placing my order, Jade in customer services has been fab, and I also must mention how accommodating and friendly Knight Fencing's delivery partners, F&G Transport were - they couldn't have been more helpful. These are most definitely companies you can trust!! A very satisfied customer!!
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Knight fencing team arrived on time and well presented. They were very friendly and only too happy to discuss what was to be done and they made sure that we were happy. They worked well and repaired our fence and installed a support pole for a large tree. They were quick and very tidy and even sharpened my garden shears that were blunt. I would definitely recommend this company for any garden repair work.
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Trusted, Accredited, and Committed to Excellence

Certified fencing contractor logo from the Association of Fencing Industries.
DuraPost Trained Installer
SMAS Worksafe preferred supplier
Postsaver Approved Installer
AJS Training
Constructionline Gold Member
CLD approved installer
Checkatrade.com members
CHAS accreditation advanced
Alexandra recommened installer
Trustmark logo indicating government-endorsed quality standards.

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News, Tips and Advice

  • Women in Construction: Celebrating the Team at Knight Fencing
    Women in Construction: Celebrating the Team at Knight FencingMarch 11, 2026 - 3:49 pm
  • Knight Fencing team member working in waterlogged, muddy ground conditions during a winter timber fencing installation
    Professional Fencing Installation West SussexFebruary 27, 2026 - 1:01 pm
  • Before and after of a free timber gate installation for a local resident by Knight Fencing Ltd
    Community Support ChichesterFebruary 24, 2026 - 12:59 pm
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Knight Fencing
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Based on 80 reviews