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OSU Extension Service provides up-to-date information on insect and arthropod management in Oregon and throughout the country. This includes pest management in urban and agricultural settings, as well as conservation of beneficial insects and pollinator health. We provide resources and expertise to help you find the information you need.


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I have fungus gnats everywhere. Can you help?

Q: I grew several plants outside this last summer Rosemary, Geranium, etc. When I brought them in for winter it seems I now have fungus gnats in all my houseplants. Please give advice. I would prefer not to use chemicals but am getting desperate.

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