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Thread: Japanese beetles/lawn grubs

  1. #1
    Engineer chassis's Avatar
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    Sep 2005
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    Default Japanese beetles/lawn grubs

    Did anyone have a horrible season last year with these pests? I'm in SE Pennsylvania and nearly had my front lawn devoured by grubs (Japanese beetle larvae). The adult beetles also wreaked havoc on my climbing roses. Others in my neighborhood also have/had grub problems. My casual observations and discussion with a landscape contractor confirms this.

    This year I'm applying Grub-Ex once per month and so far it seems to be working. Also I'm keeping an eye for adult insects, but I think it's still to early to see them.

    Anyone else have recent war stories about dealing with these nasty creatures?

  2. #2

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    10 years back (woah, was it that long ago) we had SO MANY grubs, I swear, the ground looked like it was moving when you didn't look directly at it. I mean, there must have been millions of them. I felt like Wang Lung in the Good Earth, 'cept it was grubs - not locusts...and I don't live in China.

    They massacred the grass. You could pick out the whole clumps of it like it was a bad wig.

    Anyway, the good news is that we didn't have the same problem the next year. and the grass came back pretty quickly. Don't forget to treat your sweet trees, like the maples in a month or so when da beetles come-a-callin!
    (important note: I'm not a pro)

  3. #3
    DIY Senior Member SteveW's Avatar
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    Feb 2005
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    Omaha, NE
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    Sounds like a lot of chemical...

    Isn't Grub-Ex, and similar products, supposed to be applied once, any time between April and August, and remain in the soil all season? That's what I recall reading when I applied it last week.

    Rather than multiple applications of chemical, I'd be tempted to add a biological treatment, like milky spore or beneficial nematodes.

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