LITTLE BUGGER
Fungus gnats are tiny, dark-winged flies that love to camp out in your plant’s damp soil. They are about 1/16 to 1/8 of an inch long.
These flying pests are attracted to moisture and often flutter around the base of your plant, laying eggs that hatch into root-nibbling larvae.
If you spot little black flies hovering near your pots, or if your soil seems to be constantly swarming, chances are you've got a fungus gnat infestation!
REMOVAL METHODS
PATIENCE IS KEY
To successfully manage a fungus gnat infestation, it is important to target both the larvae (in soil) and adult gnats (flying).
Select one method and give it a little time. If the bugs are still hanging around, try another.
DRY OUT SOIL
- Dry out the top few inches of soil to disrupt fungus gnat larvae. They thrive in damp conditions!
- Consider speeding up the drying time by improving airflow with a small fan.
STICKY TRAPS
- Place yellow sticky traps near the soil surface to catch adult fungus gnats.
- Regularly replace traps when they become covered.
This method is only effective for ADULT GNATS. See other methods for larvae removal.
MOSQUITO BITS/DUNKS
Mosquito Bits and Mosquito Dunks both contain Bacillus thuringiensis israelensis (Bti), a natural bacterium that kills fungus gnat larvae - NOT adult gnats.
- Mosquito Bits release quickly, making them the best choice for an active infestation.
- Mosquito Dunks break down slowly, so they are recommended for maintenance rather than immediate treatment.
- Both are soaked in water before use. Make sure to follow the packaging instructions for best results.
NEMATODES
- Mix beneficial nematodes with water and add to soil, following package instructions.
- Nematodes will only target and eat fungus gnat larvae - NOT adult gnats.
Nematodes are microscopic and will not harm your plant. They will die on their own naturally as their food source runs low.
