Houseplants forum: Fungus Gnats - Help!

Views: 245, Replies: 3 » Jump to the end
Name: Che Clark
Chicago, IL (western suburbs) (Zone 5b)
Aug 22, 2017 8:40 PM CST
I have a fairly persistent issue with fungus gnats, and rather than trial and error all the products and methods, I figured I would ask the true experts. It's been going on for about a month or so. Set out apple cider vinegar with a couple drops of dish soap and that seemed to slow things a bit. Let the soil dry down as well and hat also seemed to help. However, I'm not sure I'm getting to the eggs / larvae. What is the best way to resolve this once and for all? Thank you!!
Name: Gene Staver
Portage WI 53901 (Zone 5a)
Herbs Annuals Hummingbirder Butterflies Garden Photography Cactus and Succulents
Birds Cat Lover Houseplants Garden Sages
Aug 22, 2017 8:46 PM CST
Azamax as a soil drench !! Works !! I know this from years of fighting them and now success. Gene
Name: Baja
Baja California (Zone 11b)
Cactus and Succulents Seed Starter Foliage Fan Xeriscape Container Gardener Hummingbirder
Native Plants and Wildflowers Garden Photography Region: Mexico Plant Identifier Forum moderator Plant Database Moderator
Aug 22, 2017 9:13 PM CST
Sticky flypaper will remove most of the adults. Before attempting anything more exotic, I would recommend that as a useful first step.
Name: Will Creed
Professional indoor plant consultan
Aug 23, 2017 6:44 PM CST
Keep the soil as dry as possible. The gnat larvae live in the uppermost portion of the soil. If they are deprived of moisture they will die. The winged adults die of "old age" in about a week. The key is to treat the larvae in the soil.

If you are having a persistent problem, there is a good chance you are introducing the problem with the potting mix that you use.
Will Creed
Horticultural Help, NYC
Contact me directly at [email protected]
I now have a book available on indoor plant care

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