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Old 07-05-2013, 09:21 PM
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Gnats!!!!!!!!!!

I've got a few orchids under my belt, and I love the all. However, I do not love their pests. Fungus Gnats have bothered my poor Phaleanopsis for years. I use a few tricks to control the infestation, but I want them gone. Anyone have any holistic, or "Less Harmful" pesticides I can use to kill the adult gnats?
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Old 07-05-2013, 09:42 PM
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img_2037.jpgI use my Pinguiculas for the nasty gnats.
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Old 07-05-2013, 10:09 PM
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I always wanted a bug eater

I just picked one up on ebay. Do they reproduce rapidly, like A... Hens, and Chicks type succulent? Will they grow in regular old potting soil?
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Old 07-06-2013, 12:00 AM
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I got mine from a plant show and it was planted in something like bark mix. The seller showed me it is like laying on top of it. Well, so far it does not reproduce fast like hen and chicks, but there is one container that had a baby, don't know if it was there before or it reproduced while in my care.

I have these plants watered from below, so it is sitting on water. So far they like it that way.
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Old 07-06-2013, 07:04 AM
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Sundews also eat gnats. Drosera capensis and some other larger-leaved Drosera are sometimes available at garden centers. Grow like you would grow a butterwort (Pinguicula).

I have heard Bacillus thuringiensis var israelensis is an effective control for the gnats. Kills the larvae. This is the active component in those mosquito control briquettes you sometimes see.

A re-potting sometimes controls the gnats, as they live inside the medium in plants where the medium is starting to break down.

Good luck!
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Old 07-06-2013, 07:34 AM
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I use a mix of large granule sand, ground peat, and sphagnum moss for my butterworts and sundews. Once established they multiply like crazy, I started out with one of each, have easily 20 right now, not counting the dozens I have given away.
The mosquito dunks that Catt mentioned do well too
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Old 07-06-2013, 08:08 AM
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If you can find "dunks" - as in Mosquito Dunks - plop some in water and let them dissolve a bit (I usually waited a couple of days) and then use the water to water your orchids. I would replace the water as needed and added more dunks as needed. Because of the way dunks are designed to be used it takes a bit of guessing and you'll have to use the dunked water for a few weeks to get rid of them. They aren't harmful to pets, birds, or anything and it will take care of the gnats.

You say you've been battling them for a few years now...are you using a peat based mix? If so, change it...and you'll most likely get rid of the gnats. They love peat mixes.
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Old 07-08-2013, 02:59 PM
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pings

ping vs. gnats

img_4898.jpg
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Old 07-08-2013, 03:20 PM
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Get some Butterworts and BTI...its a bacteria that eats the gnats larvae. Check out this thread: Fungus Gnat Control - BTI?
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Old 07-16-2013, 05:16 PM
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What gnats? The only time I see gnats are on the leaves of my butterworts or floating in my pitcher plant's pitcher. We once had swarms of them...some of my non-orchids must have damp soil at all times and with that organic fertilizer, well, they thrived. Then the butterworts thrived...with all the gnat fertilizer.
Just don't accidently get orchid fertilizer on them. I discovered I was accidently splashing one of the ping divisions with fertilizer...it didn't survive.
They do multiply for me and need divided when they fill the pot. You can also plant a leaf...there are sites that show how.
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Old 07-22-2013, 07:18 PM
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I bought a Butterwort on ebay. The only media that I had available was some remnants from a bag of miracle grow potting soil, and some thin grain sand from my kids sandbox. I put the little guy in my windowsill, and it's already attracting gnats. Now I believe someone had posted about watering by filling a dish underneath the pot?!
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