Fungus gnats - flower week2

Envincion

Active Member
Guys ,as mentioned in the subject ,they are so many ,my yellow sticky trap are full of them ,and they still somany ,plant grow well so far no issue in week 2 almost into 3 .
i grow organic in a living soil ,any good solution " organically " for that ?
 

GreenestBasterd

Well-Known Member
Remove your mulch layer and throw it in the compost, sprinkle some diatomaceous earth and neem then reapply with fresh mulch and don’t water heavily for a few days.( bottom feeding via the tray works great )
Add new sticky traps and you should visibly see a decrease in numbers within a few days.
Hope it helps!
 

Kerowacked

Well-Known Member
Top soil is too wet is what brought them. Inch of sand will stop the breeding, water deeper, spraying water on the soil is like a hot tub for the bastards.
 

Dank Bongula

Well-Known Member
A good option is to water in some beneficial nematodes. These will eat the fungus gnat larvae in the soil and used with the sticky pads that kill the adults, that should eliminate them fairly quickly...a week later water in the other half of the nematodes and that should end it.

Can also adjust fans to blow across the top of your soil to help dry it out a little quicker if you don't have an infestation
 

HydoDan

Well-Known Member
I've tried all of the above mentioned remedies, and even used a shop vac in hand to hand combat.. The only way I got rid of them was a Spinosad soil spray.. OMRI cert. Just don't use it outside.. Kills bees..
 

raggyb

Well-Known Member
cover the pot with paper or a piece of landscape fabric, leaving a very small area for them to get in and out of. Put sticky trap paper near the hole underneath and on top. only way in or out is past sticky paper. catch a million of them.
 

ComfortCreator

Well-Known Member
I fought them first grow. Pride aside, too frequent watering causes them.

I would not mulch the top. I would let the pots dry out as much as possible so the top inch+ is dry. Then water carefully. Follow it with a neem spray to the surface of the soil only, using a pressure sprayer. Sticky traps all over. Monitor for a few days until next watering. Repeat all of this until they go away. A few weeks should have them down to just a few. Measure progress by using new sticky cards each week to see how many get caught.

Another successful method is mosquito dunk pellets. Diatomaceous works great but is messy and hard to use with any fans on.
 
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