Miracle-Gro Nourish and Protect Seaweed Lawn Food, seaweed lawn feed, lawn fertiliser, grass feed, lawn tonic, garden lawn nutrient

Weed control products kill or remove unwanted plants in lawns, borders, paths, patios and gravel. This category includes ready-to-use and concentrated weedkillers, lawn weedkillers, combined feed, weed and moss lawn treatments, weed controls based on natural ingredients, and manual tools such as weeding brushes for paving joints.

How weedkillers work

• Contact: act quickly on the leaves they touch, but tough weeds may need a second treatment.
• Systemic: taken in through the leaves and carried through the whole plant, including the roots. They are slower, and results can take up to a few weeks to show.
• Selective lawn weedkillers: target lawn weeds such as dandelions and clover without killing the grass.
• Residual or preventer: stay active in the treated ground to stop new weeds coming through, in some cases for a whole season. Check the label for where they may be used.

Choosing and applying

Ready-to-use sprays are handy for small areas and spot treatment. Concentrates are diluted before use and suit larger areas. Apply on a calm, dry, warm day while weeds are growing actively, and avoid spraying shortly before rain, which can wash some products off. Keep children and pets off treated areas until they are completely dry, or for as long as the label says.

Safety and the law

Only choose and use weedkillers that are authorised for home garden use in the UK, and read the label before you choose and again before each use. Keep products in their original containers, stored out of reach of children and pets, and never pour leftovers down a sink, drain or toilet. Follow the manufacturer's instructions and safety data.

To apply concentrates, see garden sprayers; for lawn and plant feeds, browse fertilisers.