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How to Get Rid of Gnats in Greek Oregano Plant

Updated: April 16, 2022

Gnats are tiny flying insects that can be a nuisance to gardeners, especially those who grow herbs like Greek oregano. They are attracted to the moisture and organic matter in the soil, which is why they tend to infest potted plants. If you’re struggling with gnat infestation in your Greek oregano plant, don’t worry, there are several ways to get rid of them.

Identify the Type of Gnats

Before you can effectively get rid of gnats in your Greek oregano plant, it’s important to identify the type of gnats you’re dealing with. There are several types of gnats, including fungus gnats, fruit flies, and drain flies. Fungus gnats are the most common type that infests plants.

Check Your Soil Moisture

Overwatering your plants can lead to excess moisture in the soil, which attracts gnats. Check the soil moisture level by sticking your finger an inch or two into the soil. If it feels moist, hold off on watering until the top inch or so of soil feels dry to the touch.

Use Sticky Traps

Sticky traps are an effective way to catch and kill gnats. Place yellow sticky traps around your Greek oregano plant near the soil surface. The yellow color will attract the gnats, and they will become stuck to the trap.

Change Your Watering Habits

If you’re constantly battling gnat infestation in your Greek oregano plant, it may be time to change your watering habits. Instead of watering from above, try bottom watering by placing your pot in a saucer filled with water. This will allow the plant to absorb water from the bottom up and prevent excess moisture in the soil.

Apply Beneficial Nematodes

Beneficial nematodes are microscopic worms that feed on the larvae of fungus gnats. You can purchase them at your local garden center and apply them to the soil around your Greek oregano plant.

Use Hydrogen Peroxide

Hydrogen peroxide is a natural insecticide that can effectively kill gnats in your Greek oregano plant. Mix one part hydrogen peroxide with four parts water and pour it over the soil in your pot. The solution will kill the larvae and eggs of the gnats.

Repot Your Plant

If all else fails, it may be time to repot your Greek oregano plant. Remove the plant from its current pot and shake off as much soil as possible. Inspect the roots for any signs of damage or rot, and trim them if necessary. Repot the plant in fresh, sterile soil and a clean pot.


Can gnats harm my Greek oregano plant?

Gnats themselves do not harm plants, but their larvae can damage roots and stunt growth.

How often should I water my Greek oregano plant?

Water your Greek oregano plant when the top inch of soil feels dry to the touch.

Can I use pesticides to get rid of gnats?

Pesticides can be effective in getting rid of gnats, but they can also harm beneficial insects and pollinators. It’s best to try natural methods first before resorting to pesticides.

How long does it take to get rid of gnats?

It can take several weeks to completely get rid of a gnat infestation in your Greek oregano plant. Be patient and consistent with your chosen method.