Common weeds: Garden expert shares how to kill ‘heavy infestations’ of crabgrass on lawns

How to remove crabgrass from your lawn

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Crabgrass is a tough annual week that appears low to the ground and has lots of stems. The weed can look like thick blades of grass but often manages to avoid being cut by lawn mowers due to their position close to the ground. Unlike other annual weeds, crabgrass is robust and will survive in high traffic areas.

The weed’s stalk which bears its flowers and seeds is particularly tough.

Being an annual weed, crabgrass appears in early summer and thrives in hot weather.

The plant is usually only killed off once frost hits, but this is after it has dispersed its seeds around your garden.

While crabgrass may not look as unpleasant as bigger weeds, removing it from your lawn will ensure it remains healthy.

Removing it before it sets seed will also ensure you don’t end up with weeds sprouting up in your flowerbeds next year.

A gardening expert from The Home Depot has shared how to get rid of crabgrass from your lawn and how to prevent “heavy infestations” from returning.

What tools do you need to remove crabgrass?

To help remove crabgrass, you will need a weeder tool like a hand-held fork.

You will also need a rake, broadcast spreader and garden hose.

What materials do you need to remove crabgrass?

Ideally, according to the experts, you need a pre-emergent lawn treatment, liquid herbicide, lawn fertiliser, grass seed, pre-emergent weed control and garden gloves.

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The expert said the first thing you need to do is identify the areas with crabgrass.

They said: “It’s a low growing weed that’s splays outward like a crab and it’s easy to spot.

“As the weed dies in autumn, it drops seeds that can germinate in spring so it’s important to remove the clumps as they pop up.

“You can use a weed or two, or pull by hand just be sure to remove them roots and all.

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“For heavy infestations, you may need to apply a post emergent herbicide designed specifically for crabgrass.”

You need to make sure you read the herbicide’s label because some products may target weeds but also kill your lawn’s grass.

After the last frost next year you can begin lawn maintenance.

Healthy turf can keep crabgrass and other “aggressive” weeds away.

The expert continued: “Another way to prevent crabgrass is by keeping your lawn on the tall side – three inches is an ideal height to shade the soil and keep any stray seeds from germinating.

“You’ll also want to fertilise the lawn regularly so it becomes thick and lush, leaving little space for weeds to grow.

“Weeds love a stressed lung so water deeply during dry conditions to develop a deep resilient root system

“Next, recede or lay seed over bare spots then water frequently until the new grass is established.

“Finally in early spring reapply a pre-emergent herbicide to prevent crabgrass from returning.”

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