Fungus Gnats

Active Seasons


Fungus Gnat Appearance and Size Facts

Fungus gnats are small, delicate insects known for their slender appearance and distinctive features. These insects are commonly found around potted plants, especially in moist or overwatered soil, as they feed on fungi and decaying organic matter. Fungus gnats are often considered a nuisance in indoor gardening and can be managed through proper plant care and coil moisture control. Some of the key characteristics of fungus gnats include: 

  • Dark gray to black in color
  • 1.5 to 4 millimeters in length
  • Wings longer than their bodies
  • Long, thread-like antennae longer than their heads
  • Worm-like larvae found in soil

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Behavior and Habitat of Fungus Gnats

Fungus gnats are small flying insects commonly found in damp or moist environments – particularly potted plants, flower beds, and gardens. They are often associated with overwatered or poorly drained soil as well as decaying plant matter. Adult fungus gnats primarily feed on nectar and plant sap and while they are not harmful to plants, they can become a nuisance when present in large numbers. Fungus gnats lay their eggs in the top layer of soil or compost, as they hatch and grow the larvae may damage plant roots, potentially affecting plant health. 

Signs of Infestation of Fungus Gnats

Signs of a fungus gnat infestation typically include the presence of small, dark-colored flies hovering around potted plants, especially in areas with damp or overwatered soil. Along with this, you may notice tiny, worm-like larvae in the soil or near plant roots. These larvae feed on fungi and organic matter, potentially causing harm to plant roots. Fungus gnats are most active in moist environments, and their presence can be a nuisance to indoor gardening and houseplants.

Tips for Prevention of Fungus Gnats

To prevent fungus gnat infestations, it’s essential to address the conditions that favor their habitat, including proper soil moisture management, allowing the soil to dry between waterings, and ensuring good drainage. Check to be sure that pots have proper drainage and let the top inch of soil dry between waterings. Use a well-draining potting mix, avoid over-fertilization, and inspect new plants for signs of infestation before bringing them indoors. These measures will help create an environment less conducive to fungus gnat breeding and minimize the risk of infestations in your indoor or outdoor garden. 


Getting Rid of Fungus Gnats

To eliminate a fungus gnat infestation, start by allowing the top layer of soil to dry out between waterings to disrupt the larvae’s habitat. Remove any dead leaves and decaying plant matter from the soil surface. You can also use yellow sticky traps to capture adult fungus gnats. Maintaining proper plant care practices and soil moisture levels is essential to preventing future fungus gnat problems. 


Effective Fungus Gnat Control Solutions

For more severe fungus gnat infestations, trust the professionals here at Hulett Environmental services. We offer environmentally safe and pet-friendly pest control solutions that will effectively eliminate your pest problems for good. Our professional pest experts can determine the source of your infestation and craft a targeted approach to get rid of it.

Feel free to contact us for more information on how we can help solve your pest problems or book your free inspection today so we can return your home to the clean and pest-free space you deserve!

Fungus Gnat Gallery