Expert reveals the best and worst times to mow your lawn – and common mistake that can WRECK your grass

Scottish Sun

06-05-2025

AN EXPERT has revealed that mowing your lawn at the wrong time of day could lead to weeds, yellow patches and fungal diseases.
With temperatures set to climb again this weekend, after a chilly bank holiday many of us are likely making plans to spend time relaxing in the garden.
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The time of day you mow your lawn can impact the health of your grass
However, after a long winter of neglect, our lawns may be in need of a bit of TLC.
And although you may think that it doesn't matter when you give your grass a trim Ivana Agustina, Head of Project Management at ShrubHub revealed that mowing at the wrong time can have disastrous consequences.
'People don't realise that grass gets stressed just like any plant,' she said.
Many gardeners make the common mistake of mowing their grass in the midday heat, without realising the harm this can do to the grass.
'If you mow it at the wrong time, you're basically wounding the lawn when it's least able to recover.'
The expert revealed that in spring the best time to mow your lawn is between 9 am and 11 am.
'Mowing during late morning means you're not clogging your mower with wet clippings or baking the lawn in midday heat,' she said.
Ivana explained that one of the worst times to mow your grass is before 8 am as grass is still wet from morning dew, which leads to "uneven trimming".
She added that between 2 pm and 4 pm is also not a good time to cut the grass, as this is the hottest part of the day, "which is bad news for moisture retention and overall lawn health."
The expert added: "You're slicing into already-dry blades under a blazing sun.
'That kind of trauma leaves your grass vulnerable to pests, yellowing, and fungal infections.'
The four easy steps to get your tired lawn lush for summer & you don't need to worry about pigeons ruining it either
During the summer time, the expert revealed that the best time to mow is between 6 am and 8 am, as this allows you to avoid the heat.
Ivana said that cutting your lawn at the wrong time could lead to fungal diseases, uneven growth and increased weed risk.
However, if you've been mowing your lawn at the wrong time, you can easily switch to the correct time of day, and should see results within weeks.
'Grass is surprisingly resilient,' Ivana said.
How to stop yellow patches on your lawn
STEVEN Bell, Managing Director of Paving Shopper, shared his insights on the true causes of lawn discoloration and how to maintain a lush, green lawn…
1) Sharpen mower blades
2) Prevent fungal disease with nitrogen fertiliser
3) Mow frequently
4) Aerate lawn with a fork
'Even if you've been mowing at the worst possible time, switching to the right window can make a difference within a few weeks.'
For those looking to spruce up their brown looking lawns, Home Bargains has the perfect budget buy.
Gardening fans can pick up Speedy Seed for just £4.99 from the bargain retailer.
Home Bargains bosses said: "Fast-acting grass seed and easy to use, this Speedy Seed Grass Seed is a great way to fix dead patches in your lawn.
"This lawn seed features fast-germinating seeds to provide you with a flawless lawn in no time.
"Perfect for bringing new life to old lawns and restoring the greenery of your garden."