Crane flies, also commonly referred to as Daddy Long Legs, could devastate UK lawns due to the recent spell of warm weather.

According to research conducted by Great British Lawns, the larvae of some crane flies (leatherjackets) can damage lawns, small plants, garden borders and vegetable plots by eating roots. Homeowners with newly laid lawns should be especially aware, as the grubs enjoy the tender new roots.

Ian Kettle, a lawn treatment specialist, explained that the larvae is on a scale he has never seen before. "I've worked in the lawn treatment business for more than 12 years and I've never seen anything like the amount of Daddy Long Legs we have at the moment. We've had a very warm summer overall, and you have to think that global warming is the root cause of this explosion."

Typically, leatherjacket larvae hatches from late July, staying underground until they pupate the following spring. The larvae will remain close to the lawn's surface until the colder weather forces them to burrow down deeper for protection and warmth in the ground.

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A crane fly (Daddy Long Legs)

Until the end of October, you may notice more jays, magpies, crows, rooks, badgers and foxes digging up your grass in search for the larvae of the Daddy Long Legs — their preferred snack.

What does the Leatherjacket larvae look like?

Leatherjacket larvae is a grey/brown colour, usually around 2.5cm long. The grubs lay their eggs on the lawn surface during the summer months and the cycle repeats itself.

According to the RHS, they are often more numerous after a wet autumn, as damp conditions favour survival of eggs and larvae.

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Lisa Joyner
Deputy Daily Editor, Country Living and House Beautiful

 Lisa Joyner is the Deputy Daily Editor at House Beautiful UK and Country Living UK, where she's busy writing about home and interiors, gardening, dog breeds, pets, health and wellbeing, countryside news, small space inspiration, and the hottest properties on the market. Previously, she has written for Conde Nast Traveller, House & Garden and Marie Claire magazine. Lisa studied at University For The Creative Arts, where she completed a BA in Fashion Journalism.