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		Orchid Board - Most Complete Orchid Forum on the web ! > ORCHID DISCUSSIONS > Pests & Diseases
Fungus gnats and diatomaceous earth?

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04-01-2025, 01:06 PM

PleaseBloom PleaseBloom is offline

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Join Date: May 2023

Posts: 14

Fungus gnats and diatomaceous earth?

Is it save to use food grade diatomaceous earth in my orchids? Supposedly it kills adults and larve from what I've read? I've only seen posts about houseplants with actual dirt in the pot and not bark so i'm curious if anyone had tried this on their orchids. I tried the dunks for months and it didnt really eliminate them. Also open to nematodes if anyone knows where to purchase and what kind...and if they work. NOTHING kills these things

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