Add a 1/4 inch of horticultural sand (do not use play sand) to the top of the soil in your containers to help discourage fungus gnats from laying eggs around the plants. You can also try placing the cut side of a potato on the soil surface to draw some of the larvae out of the soil.
Will fungus gnats lay eggs in sand?
Sand. Fungus gnats lay eggs among the top layer of moist soil or plant media. By dressing your plants with sand, it will give the appearance of being dry, and discourage the insects from laying their eggs there.
What kind of sand do you use for indoor plants?
Sand adds air space to a potting mix. Builder’s sand, or coarse sand, is best. Avoid plaster and fine sands; they create a dense mix. Because it is heavier than other ingredients, sand is a good choice for top-heavy plants that might tip over.
Why do fungus gnats hate sand?
In recent years, sand has become the weapon of choice for combatting fungus gnats. Simple as it seems, a half-inch layer of sand on top of the potting soil in each pot can keep fungus gnats from breeding. It works because sand drains and dries quickly, denying the fungus gnats the moist soil they prefer.
Does cinnamon kill fungus gnats?
Chamomile and cinnamon are powerful natural fungicides, which kill off the gnats’ primary food source, therefore making the soil inhospitable.
Will coffee grounds get rid of fungus gnats?
Unfortunately, coffee grounds often end up in the trash even though they can be used in various ways even after you have enjoyed your hot beverage. They can, for example, help to get rid of gnats in houseplants or in the garden.
What is the fastest way to get rid of gnats?
Homemade gnat killer spray: A mixture of half a cup of water, half a cup of isopropyl alcohol, and a teaspoon of dish liquid can be filled in a spray bottle. This mixture can be sprayed on the gnats directly to kill them.