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Fungus Gnats

sccma
sccmastarted grow question 5 years ago
Started out on very small pots, and infested soil. I noticed some very small flies, that looked like mosquito's. Learned now it's Fungus Gnats. They have been eating and making some tears on leafs. Have changed to bio bizz light mix soil. Any homemade recipe to help?
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Week 4
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CRiSPrGrow
CRiSPrGrowanswered grow question 5 years ago
for fungus gnats actually the solution is very simple : they need moisture to keep their eggs safe, so as long as you stop overwatering then they will just basically disappear within a few days. You can see the symptoms of overwatering like the puffy space between the veins of the leafs and the downward curling tips . the main thing is to respect a very strict wet dry cycle, just leave it one more day than you usually would or even more if necessary. diatomaceous earth works well, but my favorite remedy for any type insect is actually biological : use bacilus thuriengiensis , this bacteria doesnt harm the plants at all but it will parasite the eggs, larvae and even go into the brains of the flying insects... after you add it you'll start seeing the flying ones behave in wierd ways when they fly and in like 10 days everything will be gone. Hope this helps ! 🚀
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Stoney1986
Stoney1986answered grow question 5 years ago
Cover your soil(small stones or something) and google how to make tea from cinnamon... Bio solution🤘
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Fergie1984
Fergie1984answered grow question 5 years ago
I had the very same problem a few weeks ago. I bought yellow sticky pads from amazon and placed them on the sides of the tent which catches all the flying ones. Problem is they lay eggs very quickly on top of moist soil. To kill the eggs i recommend you buy neem oil and do a soil flush when watering the plants. This kills the larvae and stops them reproducing. Also try to only water when needed and let the soil really dry out between waterings as they can only thrive in moist conditions. A combination of yellow sticky pads and neem oil wil get rid of them. The neem oil also protects the roots. Also mix neem oil and water to spray bottle and do a foliar spray as it protects the leaves from being eaten. Hope this helps. Good luck 👍
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susina
susinaanswered grow question 5 years ago
Hi there, I'm currently dealing with a gnats infestation but I don't think this is your case. Gnats don't eat the leaves, they eat tiny invisible fungus on the surface of the soil, they are dangerous for the plant because their larvae can damage the roots. I'm not expert enough to make a diagnosis about which parasite is giving you problems. Anyway I suggest you to buy some diatomaceous earth, it should kill any parasite.
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