this post was submitted on 18 Jun 2025
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Beneficial nematodes - yay or nay? (lemmy.world)
submitted 1 month ago by reddig33@lemmy.world to c/gardening@lemmy.world
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I’ve got grubs in my vegetable garden. I looked into spraying nematodes to kill them, but I’m worried about it harming other bugs like butterflies, bees, and fireflies. Anyone have any experience with this? I don’t want to do more harm than good.

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[–] DeathsEmbrace@lemmy.world 4 points 1 month ago (2 children)

If you can but it might be too soon if they are in next stage a safe one is Bacillus Thuringiensis. It kills caterpillars or any larvae with midguts.

[–] Reverendender@sh.itjust.works 2 points 1 month ago (1 children)

Where does one acquire this magical bacterium?

[–] dkppunk@lemmy.world 3 points 1 month ago

Most garden centers carry it. I used Monterey B.t. spray for a really bad inchworm infestation. It worked really well, but it does stink.