Bye Bye Plant Flies: Effective Strategies for How to Get Rid of Fungus Gnats

Bye Bye Plant Flies: Effective Strategies for How to Get Rid of Fungus Gnats


Fungus gnats, those tiny, pesky insects hovering around your beloved indoor plants, can be a real nuisance. These unwelcome guests not only disrupt the aesthetics of your green haven but can also harm your plants. Fear not, as this article delves into practical solutions for getting rid of plant flies (fungus gnats) and ensuring your indoor garden remains a thriving, fly-free zone.

1. Identify the Culprit

Know Your Enemy

Before diving into eradication methods, it's essential to identify fungus gnats accurately. These small, dark-winged insects are often seen hovering around your plants' soil and can lay their eggs in the damp conditions. Their larvae feed on organic matter in the soil, potentially affecting your plant's root health.

2. Allow Soil to Dry

Dry Out Their Breeding Ground

Fungus gnats thrive in moist environments, so adjusting your watering routine can significantly impact their population. Allow the top inch of soil to dry out between waterings. This step not only targets the larvae by depriving them of their preferred breeding conditions but also helps prevent overwatering, benefiting your plants' overall health.

3. Improve Drainage and Aeration

Enhance Soil Conditions

Well-draining soil is your ally in the battle against fungus gnats. Transplant your plants into pots with drainage holes and amend the soil mixture with materials like perlite to boost aeration. Better drainage prevents waterlogged soil and reduces the likelihood of fungus gnat infestations.

4. Sticky Traps

Capture and Conquer

Yellow sticky traps are excellent tools for trapping adult fungus gnats. Place these traps near the affected plants to attract and catch the flying insects. Regularly check and replace the traps to monitor the population and gauge the effectiveness of your control measures.

5. Neem Oil Solution

Natural Repellent

Neem oil, derived from the neem tree, is an effective natural insect repellent. Mix a solution of neem oil and water, following the manufacturer's instructions, and apply it to the soil. This treatment not only deters adult gnats but also disrupts the development of larvae.

6. Cinnamon Powder

Kitchen Solution

Cinnamon powder isn't just a kitchen spice; it can also help combat fungus gnats. Sprinkle a thin layer of cinnamon on the soil's surface. The antifungal properties of cinnamon can prevent the larvae from thriving in the soil.

7. Hydrogen Peroxide Drench

Target the Larvae

A hydrogen peroxide solution can be used to tackle the larvae directly. Mix one part hydrogen peroxide (3%) with four parts water and water your plants thoroughly. This solution oxygenates the soil, deterring larvae growth without harming your plants' roots.

8. Biological Pest Control: Beneficial Nematodes

Harness Nature's Allies

Beneficial nematodes are microscopic worms that are natural predators of fungus gnat larvae. These nematodes invade the larvae, releasing bacteria that kill them. Introducing beneficial nematodes to your soil can provide long-term control of fungus gnat populations. Follow the instructions on the nematode packaging for proper application.

9. Avoid Overfeeding

Prevent Excess Organic Matter

Overfeeding your plants can lead to a buildup of organic matter in the soil, providing an ideal breeding ground for fungus gnats. Stick to a balanced fertilisation schedule and avoid over-application to prevent attracting these pests.


Banishing fungus gnats from your indoor garden requires a combination of preventive measures and strategic treatments. By allowing the soil to dry between waterings, enhancing drainage and aeration, using sticky traps, applying neem oil, sprinkling cinnamon powder, utilizing hydrogen peroxide, introducing beneficial nematodes, and maintaining balanced feeding practices, you can bid adieu to these bothersome plant flies. Remember, a vigilant approach to plant care is your best defense against future infestations, ensuring your indoor garden thrives in a pest-free environment.
Back to blog