Ask a Question forum: Unidentified bugs on indoor plant soil

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Antwerp
CinnamonBun
Mar 13, 2018 11:32 AM CST
Hi all!

I've been having issues with little black "flies" in my house for a while now. Initially I thought they were gnats, so I put down potato slices to try and lure the larvae.
No such luck and the slices are full of tiny black bugs (which you can't see on these pictures, I wasn't able to catch them on camera) and bigger ones.
They seem to be black, silver and white.

Does anyone more experienced have an idea what they might be?

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Greetings from Belgium,
Name: Will Creed
NYC
Professional indoor plant consultan
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WillC
Mar 13, 2018 6:09 PM CST
I cannot ID those critters, but they are a clear indication that your plants are potted in contaminated soil. Indoor plants should be potted only in sterile, soilless, peat-based potting mixes. No garden soil, compost or bark chips.

Allowing the soil to dry out as much as possible - just short of killing the plants - will help eradicate some of the pests.
Will Creed
Horticultural Help, NYC
www.HorticulturalHelp.com
I now have a book available on indoor plant care
Name: Ronnie
Southeastern PA (Zone 6b)
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luvsgrtdanes
Mar 13, 2018 7:06 PM CST
Possibly Dark-winged Fungus Gnats
https://bugguide.net/node/view...
It happens in a flash, but the memory of it last forever. It can not be borrowed or stolen, and it is of no earthly good until it is given away. So if in your hurry you meet someone who is too weary to smile, leave him one of yours, for no one needs a smile quite as much as he who has none to give...

Name: Philip Becker
Fresno California (Zone 8a)
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Philipwonel
Mar 15, 2018 11:02 AM CST
Let top couple inches of soil dry, or dry out as much as possible.
Mix up a solution of Neem oil.
Water them with it.
Then sprinkle a dusting of Diatomasous Earth on top of soil.
Do this twice, and you'll probably be rid of them all.
If there still around, when it's time to water third time, repeat again.

Put Neem oil mix in close able bottle, it needs to be agitated every time you use it, sence it will seperate.

Anything i say, could be misrepresented, or wrong.
Antwerp
CinnamonBun
Mar 16, 2018 2:49 AM CST
Thanks so much for the answers!

I'll try a combination, drying them out as much as possible and then going in with Neem oil and Diatomasous Earth.

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