Fungus gnats
- Thread starter victoryou
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VincenzioVonHook
Well-Known Member
Environmental control. Make sure humidity isn't too high, don't keep the top of the medium wet, and if the problem is too bad, put some diatomaceous earth on top of the medium and feed from the bottom for a few days until the top dries out and the gnats no longer have an optimal environment.
Sticky traps (yellow) are a few dollars. Use them. Lifesavers.
Sticky traps (yellow) are a few dollars. Use them. Lifesavers.
VincenzioVonHook
Well-Known Member
If it's indoors in a tent, make sure you put something like a stretched stocking over the intakes so the can't get in, and have an exhaust with a filter to limit access.
If there's us larvae in the medium, the diatomaceous earth will dry them out as well.
If there's us larvae in the medium, the diatomaceous earth will dry them out as well.
Thanks man! Yesterday my bro wattered them a little to much i guess i will let them dry for one day.
VincenzioVonHook
Well-Known Member
It's crazy how quick they can multiply. Good luck.
jondamon
Well-Known Member
Mosquito dunks
gnatrol
gnatoff
Spinosad
All of the above will rid you of gnats.
it is not the fliers that are the issue it’s the larvae that feed on roots that do the damage with fungus gnats.
clear translucent larvae with black heads.
MickFoster
Well-Known Member
3 drenches with gnatrol will kill all the larvae.
xtsho
Well-Known Member
I rarely have issues with gnats but when I did I would just spray the surface of the substrate with neem oil every few days. I don't use neem oil anymore and have since switched to sesame oil which is completely edible, organic, and won't harm your plants. Plus I have it in my kitchen cupboard. It's the active ingredient in several organic insecticides and can be purchased at the grocery store for $5 or less.
But the best way to control gnats is to eliminate the conditions in which they thrive. Overwatering is usually the culprit.
But the best way to control gnats is to eliminate the conditions in which they thrive. Overwatering is usually the culprit.
jondamon
Well-Known Member
Would you share your sesame oil mix ratios or do you use it neat?
xtsho
Well-Known Member
1.5 tsp per quart. You don't need to drench just get the top 1/4 inch or so wet with a sprayer.
They don't give any ratios or formulations in this document but it's an interesting read regarding use of sesame oil as a pesticide.
Sesame and Sesame Oil Profile
Active Ingredient Eligible for Minimum Risk Pesticide Use
Doug Dawson
Well-Known Member
Many use different products for these little suckers quite successfully. I have read a bunch of articles about using steel wool to control these pests. Cover the medium with it and just keep feeding as normal. The idea is the knats can't get to the medium to lay eggs and the larvae can't make it through the steel wool when they emerg. This apparently works well and costs next to nothing so might just be worth trying. Good luck.
VTHIZZ
Well-Known Member
Here's what i used
I sprayed it on the soil just enought to seep down a bit, the next day i watered as i normally would. I kept a fan close by blowing air near the top soil. After the top soil dryed from watering, i did another spray for the top soil. Also added the little yellow stickys.. a week later i have no gnats
I sprayed it on the soil just enought to seep down a bit, the next day i watered as i normally would. I kept a fan close by blowing air near the top soil. After the top soil dryed from watering, i did another spray for the top soil. Also added the little yellow stickys.. a week later i have no gnats
xtsho
Well-Known Member
Gnats are really easy to get rid of. They're more of a nuisance than anything. Especially if your veg tent is in your computer room and they keep flying around the screen at night. Little bastards drive me crazy. Fortunately I rarely get them and when I do I eradicate them in a few days. I've heard of using steel wool.
That Bonide is just Neem oil. But it works the way you used it and that's all that matters.
Lagged
Well-Known Member
Use diatomaceous earth as a last resort - but there are plenty of methods that won't destroy your microbial life.
Stick traps
Don't overwater
Mosquito bits
Neem Oil
Hypoaspis Miles
but most importantly
NEMATODE SF - this will save your life. Get them from nature's good guys and apply as directed. That combined with other methods will massively improve your situation
I had major gnat problem on last run - switched to fabric pots and controlled my watering, haven't seen once since. PromixHP (or any high porosity medium) is great for this.
Stick traps
Don't overwater
Mosquito bits
Neem Oil
Hypoaspis Miles
but most importantly
NEMATODE SF - this will save your life. Get them from nature's good guys and apply as directed. That combined with other methods will massively improve your situation
I had major gnat problem on last run - switched to fabric pots and controlled my watering, haven't seen once since. PromixHP (or any high porosity medium) is great for this.
madvillian420
Well-Known Member
nematodes work wonders if you apply a lot of them, just with a bit of a delay (about a week or 2)
If your infestation isnt too bad a few handfuls of perlite on top and a fan on high hitting the soil can be pretty useful too.
also try the search function man, this subject has been discussed many many times. you can read first hand experiences with what worked/didnt
If your infestation isnt too bad a few handfuls of perlite on top and a fan on high hitting the soil can be pretty useful too.
also try the search function man, this subject has been discussed many many times. you can read first hand experiences with what worked/didnt
Budzbuddha
Well-Known Member
Scratch in a top layer of neem meal ( down to earth brand or similar ) , it will take care of medium . Yellow stickies for the adults .
Neem is also a great soil conditioner and beneficial to medium.
Neem is also a great soil conditioner and beneficial to medium.
Budzbuddha
Well-Known Member
Next time add Neem meal to all bagged soils ... it is a great way to stem gnats and such that infect bags . Especially bags left outdoors on pallets ( nurseries/ big box stores ) .