I recently lost a plant due to fungus gnats and I'm worried about the soil that's left. Can I just toss it in the bin, or is there a better method to ensure I get rid of any remaining issues?
3 Answers
A great way to tackle fungus gnats is by using a diluted hydrogen peroxide solution. Just mix 1 part of 3% hydrogen peroxide with 4 parts water, and pour that onto the infested soil. It targets the larvae and eggs effectively. Also, make sure to let the soil dry out between applications and consider isolating any healthy plants to stop the spread. Using sticky traps near your plants can help catch the adult gnats too. Remember, patience is key as it might take a few treatments to eliminate them completely!
You can simply throw that contaminated soil away, no problem at all! Just make sure to use yellow sticky traps for any other plants you have to see if the gnats have spread. It's better to be safe!
Letting the soil dry out completely can help too since gnat eggs need moisture to hatch. If you do decide to reuse the soil later, just make sure it’s nice and dry first. I personally have had success with using Mosquito Bits for gnat control, so check that out!