weird gnat-like bugs crawling in dirt and lying on plant.

i have these strange gnats in my grow room. they are new, but i did notice little worms crawling around in dirt once they dissapeared these gnats came.

do they look like lil black flies?

Prolly fungus gnats. You usually get em from overwatering. Are you letting your soil dry out in between waterings? Either way, they can harm your plants' root system.

Get some sticky traps from the hardware store or garden store to catch adults, and chop some raw potatoes into cones. Sink the potatoes into the soil, but keep it where u can pull it out. the larvae will be attracted to the potatoes and u can just throw the pieces away every couple days.
You can also cover the top of your soil with sand. apparently in suffocates the juveniles and traps them so they can't take off. i've never used this method before myself.

thank you, i usually only let about an inch of my soil dry before watering with a spray bottle.

most mj strains like to get pretty dry before the next water. i usually let em start to droop a teeny bit before i water. if you keep em too wet, you suffocate the roots, and they will stop absorbing water as they rot and die, thus causing even slower water uptake, so even more roots will die. this leads to root rot, and it is an evil cycle. it can really slow down growth, or even kill a plant. I have a clone that was given to me a month ago, and she is just starting to drink again. her soil was like mud when i got her. nice gdp strain too.

allowing the soil to dry out also helps the roots stretch, as they have to go looking for water.

what kind of soil mix are you using?

a mix between outdoor soil, perlite, and potting soil.

ya, when i started to grow, i used usual soil without any goodies in it. that shit was horrible, little bugs was all over my plants. when i swithced to soil with nutes in it, theyre were gone like in seconds.... thanks to god!

Molasses works pretty well on these smaller bugs. Just pour some on a paper plate and the little bastards flock to it and get stuck and die.

k. i got two fly traps and some potatoes. the traps have already started to kill alot of gnats. thanx for the advice.

Outdoor soil is chock full of critters and diseases if you don't sterilize it first.

havocdb said:

Prolly fungus gnats. You usually get em from overwatering. Are you letting your soil dry out in between waterings? Either way, they can harm your plants' root system.

Get some sticky traps from the hardware store or garden store to catch adults, and chop some raw potatoes into cones. Sink the potatoes into the soil, but keep it where u can pull it out. the larvae will be attracted to the potatoes and u can just throw the pieces away every couple days.
You can also cover the top of your soil with sand. apparently in suffocates the juveniles and traps them so they can't take off. i've never used this method before myself.

Click to expand...

Sand? sand is similar to soil so wouldnt they just barrow through the sand? Iv'e heard of using petrolium for sufforcating but never sand.