OldMedUser
Well-Known Member
A serious infestation of gnats will destroy the root hairs and the plants will dry right up as they lose ability to take up up water. Looks the same as if you haven't watered at all.
Last time I had them I put up a dozen sticky traps, covered the surface of the soil completely with a half inch of diatomaceous earth and watered from the bottom to make sure the top stayed dry. The little buggers can get in and out through the drain holes too so I stuffed paper towel in them to trap the buggers in. Less than two weeks there was no sign of them.
Getting rid of all the adults constantly goes a long way to getting rid of those pests so put sticky traps on the walls, in the pots and dangling from the roof if that's what it takes. The ones in the pots get them as they emerge so don't be cheap with them there. Once the DE is there they shouldn't be able to emerge. I got a 30lb bag of it 15 years ago for about $30 from the feed store and still have about 1/4 of it left. We use it in the garden to get rid of ants and other pests too. Wife uses it to dust her chickens with to get rid of mites etc as well. Don't use the DE made for water filtration as it's been heat treated and lost it's sharp edges so no better against bugs than beach sand. The food grade stuff from the health food stores is the same as the animal feed one but cleaner I guess and cost like cocaine.
Good luck.
Last time I had them I put up a dozen sticky traps, covered the surface of the soil completely with a half inch of diatomaceous earth and watered from the bottom to make sure the top stayed dry. The little buggers can get in and out through the drain holes too so I stuffed paper towel in them to trap the buggers in. Less than two weeks there was no sign of them.
Getting rid of all the adults constantly goes a long way to getting rid of those pests so put sticky traps on the walls, in the pots and dangling from the roof if that's what it takes. The ones in the pots get them as they emerge so don't be cheap with them there. Once the DE is there they shouldn't be able to emerge. I got a 30lb bag of it 15 years ago for about $30 from the feed store and still have about 1/4 of it left. We use it in the garden to get rid of ants and other pests too. Wife uses it to dust her chickens with to get rid of mites etc as well. Don't use the DE made for water filtration as it's been heat treated and lost it's sharp edges so no better against bugs than beach sand. The food grade stuff from the health food stores is the same as the animal feed one but cleaner I guess and cost like cocaine.
Good luck.