Lawn Grubs

Grub out Lawn Grubs

British Lawn Grubs

There are only two reasonable common types of lawn grubs in Britain. These are Leatherjackets and Chafer Grubs. Everybody knows the name of “Leatherjackets” but many people do not associate these lawn damaging beasties as the young of the Crane Fly or more usually “Daddy Long Legs.” Chafer grubs are the larvae of different types of Chafer Beetle, the more common being known as Maybugs or Cockchafers.


These larvae prefer damp soil and live on the roots of your grass in the lawn. You will probably see numbers of Crane Flies as Summer is starting to turn to Autumn. The adults come up from the grass, mate and the females then lay up to three hundred eggs. The eggs will hatch after two weeks or so and the grubs start to feed. Because they are small, you may not notice any damage to your lawn and as it gets colder they will go into a sort of hibernation for the winter. When Spring comes and the soil begins to get warmer, you’ve guessed it, they start feeding again. They can get to two inches in length and obviously as they get larger, they eat more. This can be the stage at which you may notice damage to your lawn. About June time they will be as big as they are going to get, they will become less of a problem and pupate. Then of course they start the cycle all over again.

Chafer Grubs

From about April to June is the time that the adult beetles emerge and start feeding on foliage flowers and available fruit. They will mate and lay eggs in batches over  several weeks. The grubs hatch out from the eggs after some four to eight weeks depending on the conditions and they start eating straight away. Just like the Leatherjackets, these grubs will quiet down over the colder winter months, resuming their feeding again in Spring. They can get to about one and a half inches in length and larger infestations can do a lot of damage to your grass. What can make the situation even worse are the things that eat the grubs digging about in your lawn to get tot this food source. In later Spring they become dormant, only to emerge as adult beetles and start reproducing again between April and late June.

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