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Why are there so many ladybirds? What could be behind the UK ladybird ‘infestation’ and what to do about it

If you have noticed dozens of ladybirds flocking to your home this week, don’t worry, you are not alone.

People across the UK are reporting swarms of the insects congregating on their front doors, cars, balconies and inside their houses, and have turned to social media for answers.

There is actually a very good reason why so many ladybirds are suddenly appearing – here is what you need to know.

Why are there so many ladybirds?

The sudden surge appears to be down to a change in the weather, with the ladybirds looking for somewhere warm and safe to spend the winter.

Ecologist Dean Wilson from Horticulture.co.uk explained to the Telegraph & Argus: “We had a sudden turn in the weather conditions last week – a cold snap which signalled hibernation season.

“Then the warm weather this week has presented an opportunity for the insects to (all at once) find a safe home for winter in ideal conditions.”

However, he added that these swarms will not last for long: “It’s likely surprising to see so many ladybirds at once, but they’re not here to take over and it’s likely that they’ll be gone as quickly as they arrived.

“I wouldn’t expect the ‘swarms’ to stay for longer than one week at the most.”

What should I do about them?

Ladybirds are completely harmless, so there is nothing wrong with just leaving them be.

Mr Wilson says: “We have very little to fear from ladybirds. They are completely harmless – they’ll likely overwinter in a dormant state in or around your home during winter – then fly away in spring to find food and mate.

“I would encourage the general public to enjoy the spectacle and be thankful for the range of benefits ladybirds bring to the garden.”

These benefits include eating pests like greenfly, which can damage plants and crops.

Reference: Alex Finnis