Struggling with fungus gnats infesting your Monstera? Same issue here, but here's how I managed to restore its health.
Going Green: A Plant-Parent's Survival Guide
Becoming a plant-parent wasn't in my plans. I always thought they were finicky and high-maintenance, and I seemed to have a knack for their quick demise. But then, I met my partner, who was already knee-deep in her collection, and my home became a haven for leafy greens and vibrant blooms.
My journey as a plant parent began bravely, with a monstera deliciosa, or Swiss Cheese Plant, named Fudge. Despite our rocky start, Fudge has thrived under my care, and I've even grown attached to her lush, fenestrated leaves. However, when fungus gnats invaded our sanctuary, I knew I had to act quickly to save my precious plant baby.
The Ugly Suspects: Fungus Gnats
Fungus gnats are the grossest pests in a plant enthusiast's life. While they're harmless to humans and healthy plants, they can cause severe damage to sensitive root systems, especially babies. These tiny, flying bugs appear when the soil stays consistently moist and feed on organic matter. Fungus gnats breed rapidly, so if left untreated, they'll multiply like wildfire and spread to other plants.
Arm Yourself: Combat Your Foe
To eliminate fungus gnats, you must eradicate their breeding source. Begin by acquiring a bag of mosquito bits, which contain Bacillus thuringiensis serotype israelensis – an organic larvicide effective against fungus gnat eggs. When the larvae ingest this substance, it releases a toxin that eliminates them.
SUMMIT Chemical Mosquito Bits: $14 at AmazonMosquito bits don't discriminate, so while you're waiting for your order, isolate your infested plant. Once your mosquito bits arrive, dilute four tablespoons of it in four and a half liters of warm water. Soak the solution for 30-60 minutes, then strain the bits from the water and use the solution to water the top layer of your monstera's soil every four to five days.
The Hunt Begins: Trap Those Flies
While the mosquito bits work their magic on the larvae, you'll want to trap the adult fungus gnats. Purchase a pack of sticky fly traps to lure the gnats into a sticky trap – thankfully, they're attracted to bright yellow hues.
Sticky fly traps (pack of 36): $9 at AmazonPlace a few sticky traps in your monstera's pot and near other affected plants. As the adult fungus gnats are attracted to the bright traps, they'll become stuck, preventing further reproduction. Within a month, you'll notice a significant decrease in their population.
Give Your Plant a New Lease on Life
For the ultimate insurance against future infestations, consider changing your plant's soil. Fungus gnats thrive in rich, organic soil. By upgrading to a fresh, high-quality soil, you create a hostile environment for the gnats and ensure your plant has a healthy, supportive environment.
Growth Technology Houseplant Focus Repotting Mix Peat Free 8L: £8 at AmazonRepot your plant, ensure the roots are free from fungus gnat larvae, and use the fresh soil to replant your monstera. Keep the new plant isolated for a week in a well-lit area to help it recover and adapt to its new environment.
Dealing with a monstera fungus gnat infestation can be intimidating, but with patience and the right tools, your plant will look as fabulous as ever. Have you suffered through a fungus gnat invasion? Let us know your tips and tricks for overcoming these pesky invaders!
More From Tom's Guide
- Repotting a Swiss Cheese Plant
- From Serial Killer to Plant Parent
- How to Tell if Your Houseplant is Thirsty
Enrichment Data
- Common Causes: Overwatering, damp soil, organic matter in the soil, poor drainage, and unsterilized potting mix
- Solutions: Adjust watering practices, use biological larvicides (such as mosquito bits or neem oil), implement sticky traps, treat with hydrogen peroxide, apply beneficial nematodes, and repot with sterilized soil.
