How To Identify And Get Rid Of Fungus Gnats From Houseplants (Easy Essential Guide)

So when we were developing our sticky fungus gnat traps, we got down and dirty with these little critters! In this essential guide, you'll get the basics on fungus gnats; what they are, and most importantly, how to eradicate them in your houseplants!

What Are Fungus Gnats?

Ok so if you have houseplants, odds are you have seen fungus gnats. They are small, dark-colored flies that thrive in damp soil. Fungus gnats are not fruit flies, but they look similar (maybe a bit smaller). You'll generally see fungus gnats hanging around your houseplant soil, resting on the side of the pot or flying in front of your face - SO ANNOYING.

Are Fungus Gnats Harmful to Humans?

Good news! Fungus gnats are not harmful to humans, so you can rest easy knowing that your kids are safe. Fungus gnats do not sting, bite or irritate skin (just our nerves). So if you're worried about fungus gnats harming the people in your home, you can chill.

Why Are Fungus Gnats Infesting My Houseplants?

The short answer? It’s all about houseplant moisture, baby!

Fungus gnats are drawn to damp, overwatered houseplant soil because it’s the perfect breeding ground for their little fungus gnat babies. Adult fungus gnats actually lay their eggs in the top layer of your houseplant soil, and when those eggs hatch, the larvae feast on the organic matter found in your soil. Sometimes, they even nibble on the roots of your plants, which isn’t exactly a recipe for a healthy plant.

If you’ve noticed these pesky gnats, chances are your watering routine needs a little tweak. But don’t worry, we’ve got you covered with some fun and easy tips to evict these uninvited guests.

How to Get Rid Of Fungus Gnats: A Step-by-Step Guide

Let’s roll up our sleeves and get rid of those gnats—plant parent style!

Step 1: Let the Houseplant Soil Dry Out

Fungus gnats love a nice moist environment in your houseplant, so the first step is to cut off their water supply. Let your plant’s soil dry out completely between waterings. You can use a moisture meter, or stick your finger into the soil. If it's dry, it's time to water. Fungus gnats cannot live in dry conditions, so not only will this help get rid of the gnats, but it’s also great for your plant’s health. Win-win!

Step 2: Use We the Wild's Sticky Fungus Gnat Traps

Think of these as little “No Vacancy” signs for fungus gnats. Not only do our gnat traps sit discreetly on the inside of your pot (no more big ugly traps), but they're super effective because they are closer to the houseplant soil where gnats live. Want to know the best bit? Instead of being made from plastic, these are made with compostable corn material. It makes them better for you, and the planet! Just adhere them to the inside of your houseplant pot, and let them catch unwanted fungus gnats.

Step 3: Spray Houseplants With Neem Oil

Neem oil is the best natural pesticide that works wonders against fungus gnats. Our customers tell us that they use Neem Oil to combat fungus gnats. Simply shake the bottle of Neem Oil and spray your plant. You should also spray the topsoil so that it attacks the fungus gnat larvae.

Step 4: Water Your Houseplants From The Bottom

Ok, so we want to keep the topsoil dry, because that's where the gnats are living. A way to do this, but still keep your plant healthy and happy, is to water FROM THE BOTTOM. Simply fill a sink or large dish with a shallow pool of water, add a good few squirts of Grow Concentrate, and soak your houseplants in it for an hour or so. Voila, the water will soak into the soil from the bottom, and keep the topsoil nice and dry.