A GARDENING expert has revealed why the length you trim your lawn is the secret to the healthiest grass.

By mowing your lawn shorter as the weather gets colder, you can keep your lawn healthier year-round, the gardening pro said.

Your gardening habits should change along with the different demands of the seasons.

Phil Dwyer from Scotts research and development team said that you should start dropping the blade of your mower in late fall, The Delite reported.

By cutting your lawn about one to two inches shorter, you can keep your grass healthy and unmatted.

"Continue to mow shorter until your grass stops growing in early winter, when both you and your lawn head into hibernation mode," Dwyer said.

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"For that final mowing, go even a little bit lower."

This comes as we have revealed more lawn care tips to get thicker and healthier grass.

Marc Kerr, who is the co-founder of UK subscription lawncare brand So&Mo, spoke to The Express and revealed that it's all to do with how often you mow the lawn.

He begins by explaining that while some green-fingered homeowners may be tempted to cut the blades really short every now and then, it's instead best to go for a more regular, smaller trim.

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“For an established lawn, mowing little and often is the secret," he explained. "As the weather warms, the more regularly you can cut, the better.

“Every three to four days will encourage the grass to grow thicker and healthier.”

He also notes that being aware of how much grass you trim each time will help to minimise chances of scalping.

The gardening expert explains that this is something you'll come across if your grass is trimmed so short that it reveals the grass stems.

As a result, the grass may see less sun, increasing the chances of a brown lawn.

Instead, the expert says that leaving grass blades long enough to attract energy from the sun will ensure they'll grow thick and healthy.

“Set the blades to the highest setting for your first mow, and make sure not to remove more than one-third of the grass blade at once,” he explained.

And when it comes to mowing, the gardening expert also suggests leaving just one patch unmoved and applying a wildflower mix to help attract pollinators.

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“Natural grass is a habitat for birds, bees, and the planet," he added. "Pollinators need green spaces to keep their ecosystem thriving.”

This comes as this gardening pro revealed the exact length the grass on your lawn should be when you mow it.

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