As everything I can find online says that the larvae live in the layer of thatch above the grass roots, it seems to me obvious that a jolly good session with an electric lawn rake can only contribute to their discomfort and help to keep the problem in check.
I would never ever ever spray a lawn with insecticide ... we have birds, frogs, hedgehogs, toads, newts, grass snakes and myriads of other wildlife here ... I'd rather do without a conventional grass lawn than treat it with insecticide.
Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.
It sounds like they're a pretty rare occurance in the UK. I'd like to know how the OP came to the conclusion that the damage was caused by sod webworm in the first place. If it is a definite case it might be worth letting DEFRA know in case they're logging invasive species like this.
If you can keep your head, while those around you are losing theirs, you may not have grasped the seriousness of the situation.
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I would never ever ever spray a lawn with insecticide ... we have birds, frogs, hedgehogs, toads, newts, grass snakes and myriads of other wildlife here ... I'd rather do without a conventional grass lawn than treat it with insecticide.
Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.
Or a wildflower meadow, or moss lawn with 'hummocks' - as in a Japanese garden.
Why bother with the grass if it's causing a lot of problems, would be my take on it.
I live in west central Scotland - not where that photo is...
Or leave it to die and let it return to dirt and weeds?
End please.
I have received some really helpful comments from Marshalls that does not affect other wildlife.
It is the first time I have used this forum and had hoped that I would have had some useful feedback.
Please end this conversation.
Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.
In the sticks near Peterborough