Updated: February 3, 2023

Gnats are small, flying insects that can be quite annoying when they infest your citrus plants. These pests can cause harm to your citrus plant and the fruit it produces. If you are experiencing a gnat infestation in your citrus plant, don’t worry! There are several methods you can use to get rid of them.

In this article, we’ll cover some effective ways to eliminate gnats from your citrus plant.

Identify the Type of Gnat

Before you begin treating the gnat infestation in your citrus plant, it’s essential to identify the type of gnat you’re dealing with. Some gnats thrive in moist soil while others lay eggs in decaying organic matter.

Fungus gnats are the most common type of gnat that infest citrus plants. These gnats lay their eggs in moist soil and feed on fungi and decaying organic matter. They typically appear as small, dark flies with long legs and wings.

Remove Infested Soil

If you’ve identified fungus gnats as the culprit of your citrus plant’s infestation, begin by removing the top layer of soil from the pot or ground where your plant is located. You can do this by gently scooping out the soil with a spoon or small trowel.

Make sure to dispose of the infested soil immediately, preferably outside or in a sealed plastic bag. This will prevent any remaining gnats from spreading to other plants.

Let Soil Dry Out

Fungus gnats thrive in moist soil, so allowing the soil to dry out for a few days can help eliminate them. Be careful not to let your citrus plant dry out completely.

You can also try watering your plant from the bottom instead of the top. Place your pot or container in a tray of water and allow it to absorb water through the drainage holes at the bottom. This will keep the soil moist but not overly wet.

Use Sticky Traps

Sticky traps are a simple and effective way to catch gnats. They are available at most garden centers and online stores.

Hang the traps near your citrus plant to capture adult gnats. Gnat larvae won’t be caught by sticky traps, so make sure to combine this method with others on this list.

Use Natural Predators

Introducing natural predators to your citrus plant can also help eliminate gnats. Predatory nematodes and beneficial insects like ladybugs and lacewings can eat gnat larvae and eggs.

You can purchase these predators from garden centers or online stores. Release them near your plant according to the instructions on the package.

Apply Insecticides

If natural methods fail to eliminate the gnat infestation, you can use insecticides as a last resort. Insecticides containing Bacillus thuringiensis (Bt) bacteria are effective against fungus gnats.

Follow the instructions on the product label and avoid spraying the insecticide directly on your citrus plant or its fruit.

FAQ

Can gnats harm my citrus plant?

Yes, gnats can harm your citrus plant by infesting the soil and laying eggs. The larvae can feed on the roots of your plant and cause damage.

Can I prevent gnat infestations in my citrus plant?

Yes, you can prevent gnat infestations by allowing the soil to dry out between watering, avoiding overwatering, and removing any decaying organic matter from around your plant.

Are there any natural ways to get rid of gnats in my citrus plant?

Yes, introducing natural predators like predatory nematodes and beneficial insects or using sticky traps are effective natural methods for eliminating gnats in your citrus plant.

Can I use insecticides to get rid of gnats in my citrus plant?

Yes, you can use insecticides containing Bacillus thuringiensis (Bt) bacteria to eliminate gnats from your citrus plant. However, it should be used as a last resort and according to the instructions on the product label.