We plant lovers don’t want to witness plants being harmed by pests. The problem enters our homes, which is gross, therefore we especially don’t want to see pests in our houseplants! The little winged creatures known as fungus gnats are about the size of fruit flies and resemble tiny mosquitoes (don’t worry, they don’t sting!). The good news is that these pests are considerably less dangerous than many others, and even better, they are rather simple to get rid of.
What are Fungus Gnats?
It’s probably a fungus gnat if you encounter a little winged bug that resembles a fruit fly fluttering about the soil of your houseplant. They are attracted to damp, nutrient-rich soils and have long legs for a fly their size. Your plants’ leaves have very little appeal to fungus gnats; instead, they prefer the damp earth beneath the plant canopy. They devour the hair roots of your plants and lay their eggs in the top layer of damp soil. Nothing is more impolite than an unwelcome guest laying eggs in your favourite plant and consuming its roots, even though their damage may be modest. These bugs eventually cause wilting, poor growth, and discoloured leaves if left untreated.
Signs of Fungus Gnats
If you have a gnat infestation, you already know how noticeable they are. Due to their poor flight abilities, these flies usually stay rather near to the plant. They’ll be moving in zigzag patterns as you watch. Their tiny, transparent larvae could be visible if the dirt is carefully stirred. Yellow sticky cards are an excellent control method as well as a terrific way to keep track of their activity. See more below on that.
The Number One Way to Get Rid of Gnats
Infestations of fungus gnats typically occur when the soil is very damp. Problems might arise when plant parents provide the same care to their plants throughout the year. Consider this: Compared to the winter, our homes are typically brighter and more humid in the summer. In the winter, most plants become more dormant as a result of the changing seasons. You can keep fungus gnats from setting up camp in your plant pots by reducing the amount of water you use.
Gnats deposit their eggs in the top layer of the soil, and the soil must remain moist for the eggs to survive. It can harm the eggs and disrupt the gnats’ life cycle if you let it dry out. Your indoor plants should be soaked from below if your pot allows it. While the soil near the root ball absorbs water, the soil surface remains dry. Place the pot in a dish of water and let the water to seep up through the drainage holes to do this.
What If That Doesn’t Work?
You can intensify your treatment plan if you’ve modified your watering schedule and the gnats are still present or if you want to get rid of them quickly. Here are a few simple methods for getting rid of gnats in your indoor plants:
Apply sticky cards. In our greenhouse, you may have noticed the yellow cards on sticks and wondered what they were for. The cards are positioned directly above the soil’s surface since gnats prefer the colour yellow. Checking what you’ve captured allows you to keep track of what you have while also getting rid of all the gnats that land on your credit card. Replace your sticky card every 4-6 weeks (or sooner if it’s bugged), just to be safe.
Larvae are quickly, inexpensively, and efficiently killed upon contact with hydrogen peroxide solution. Spray your soil with a solution made of four parts water to one part hydrogen peroxide.
Although unpleasant, fungus gnats can’t stand a chance against a plant parent with a game plan. To avoid these disgusting bugs, reduce your watering frequency throughout the winter and develop the habit of bottom-watering. You won’t regret it!
I have potted plants, how can I get rid of the gnats?
Fortunately, there are several of organic and chemical-free ways to get rid of fungus gnats from your prized plants. You can use a traditional trap or common household goods like potatoes and dish soap!
Let the Soil Dry
It’s important to remember to let the soil dry out for a few days and refrain from watering your plant because fungus gnats and their larvae prefer to nest in moist soil. The gnats will be forced to live in an uninhabitable habitat as a result, and they will disappear in dry soil. Do not be afraid to skip your next watering in order to get rid of the gnats; your houseplant will be able to endure the dryness for a longer period of time than you might imagine.
The best advice is to take your plant out of the planter and drain any extra water from the bottom. Thus, there won’t be any dampness where gnats might deposit their eggs.
Use Traps
There are numerous traps you may employ to get rid of these bothersome bugs if you’re seeking for a speedier fix. You can choose to DIY these with a few common things or run to the store and buy specialist traps, depending on what best suits your needs.
- Pour a cup of white vinegar and a few drops of liquid dish soap onto a shallow saucer. The gnats will be drawn to the solution and fall into the trap if you place the bowl near your plant. Repeat the procedure until no more gnats are present.
- Sticky fly traps are an alternative if the smell of vinegar deters you from making your own homemade gnat trap. These little yellow paper sheets attract gnats and trap them with glue because of their brilliant hue. Although it might not be visually appealing, this procedure is simple and safe.
- Consider purchasing an indoor fly-catching gadget if you’re sick and tired of gnats in your plants and need an urgent fix. These are typically USB-powered and can be purchased locally or online. The blowers and LED lights draw the gnats, and eventually they are drawn into the trap.
- Are there any extra potatoes in the kitchen? Set a trap for them! Place the potatoes flesh-down on the ground after cutting them into little pieces. The fungus gnats will be drawn to the potatoes by their dampness. Just be careful that the parts don’t dry out otherwise it won’t operate.
Sanitize and Repot
Consider removing the plant from its planter and scraping out the soil if you want to take matters into your own hands. When doing this, take care not to disrupt the roots and take only what you can get rid of. Put the contaminated soil in a plastic bag and wash the planter with soap and warm water to sterilise it. Repot your plant into new soil after this is finished, then put it back into its planter.
Use a Spray Bottle
Take a spray bottle and combine water and dish soap in it. Repeat the technique until all of the gnats are gone by spraying the solution on the top layer of soil. If you’re seeking for a quick and natural solution to get rid of fungus gnats, try this.
What natural cure gets rid of gnats in houseplants?
Apply a homemade insecticidal soap to the leaves of a plant that has gnat infestations. You may make the mixture yourself by combining a gallon container with a gallon of water, 2 tablespoons of liquid castile soap, 1 teaspoon of cayenne pepper powder, and 2 tablespoons of a vegetable oil like olive oil. Transfer part of the mixture to a spray bottle after sealing and shaking the bottle. Spraying the tops and bottoms of plant leaves kills gnats and aids in their prevention from returning. To completely get rid of the gnats, you might need to apply the mixture several times per week for a few weeks.
Why do my house plants have tiny gnats in them?
1. Modify your drinking habits
Pests like fruit flies and gnats thrive in moist soil; their eggs and larvae cannot survive without a steady supply of moisture. Your plant probably needs less water than you are giving it, so try checking the soil with your finger and only watering when the top 2 inches of soil are completely dry. If you struggle to accurately measure moisture on your own, you can get a moisture sensor gauge that you can simply insert inside your planter. Keep in mind that the main reason why houseplants die is overwatering!
2. TAKE YOUR DRAINAGE & HUMIDITY INTO ACCOUNT
If your planter has a tray underneath, make sure to drain it right away after watering to prevent moisture buildup. The perforated holes at the front of the Wally Eco Wall Planter’s basket allow the soil breathe and remove extra moisture, but be careful not to overwater. If the air in the bathroom is excessively humid, move your plant outside or turn the humidifier down a notch.
How can tiny flies on houseplants be eliminated?
A house plant purchase can be really thrilling! Whether you are adding to your indoor plant collection or buying your first indoor plant. It can change any space with its lovely foliage, shape, and brilliant colours. Unfortunately, little pests like fungus gnats and fruit flies can ruin our love and appreciation for our lovely houseplants. We are frequently frustrated by this, as is your houseplant.
Small flies called fungus gnats can be found buzzing around your indoor plant’s soil. Because of their sad biology, these small insects are drawn to indoor plants because they eat on outdoor plants. The good news is that you can get rid of them. The type of pests you have can vary depending on the houseplants you grow.
You must first determine what kind of pests are bothering you. Small black insects known as fungus gnats, which are frequently mistaken for fruit flies, are the most prevalent pests. The distinction is that fruit flies live around fruit, especially rotting fruit, but fungus gnats thrive in plants like succulents that have damp soil. These can harm your plant since they lay their eggs in the soil.
1. Add less water or dry soil Due to the fact that the majority of fungus gnats like to live in moist soil, laying a thick layer of dry soil on top of the bedding for indoor plants will allow the soil underneath to gradually dry out and keep the fungus gnats away. It should be mentioned that even though you may scare the flies away, depriving your houseplant of water for an extended length of time can harm it. For instance, cacti can tolerate dry soil, while other indoor plant species might not.
Another choice is to water less frequently. Because fungus gnats require a moist environment to exist, watering the plant less frequently and letting the soil dry out between waterings will make the fungus gnats uncomfortable and drive them away.
3. Think about Sticky Traps Fly sticky traps can be useful because they capture adult fungus gnats, stop them from laying eggs, and disrupt the life cycle. Place the sticky trap at soil level on or close to the damaged houseplant. Fly sticky tape is available online for purchase or DIY creation. Using a card, a yellow highlighter, a wooden stick, and Vaseline, draw attention to the stick, which will draw flies, then capture the fungus gnats with the Vaseline to end their life cycle.
4. Pesticide Soap or Spray Using insecticidal soap or spray, often known as horticulture soap, is a frequent option if the aforementioned approaches fail to successfully get rid of pests. You have the option of buying the soap online or at your neighbourhood garden centre, or you may create it yourself. When the sun has set and you have your horticultural soap, all you need to do is apply it to the leaves of your houseplant and the area surrounding it. This will prevent sunburn. This ought to discourage those bugs.
6. Pot up your indoor plants The best course of action is to sanitise your plant by removing contaminated dirt that has numerous eggs imbedded in the soil and repotting your houseplant in new and fresh soil without disturbing the roots if all else fails or the sticky traps are catching a lot of insects. For more information, see our tutorial on repotting your houseplant.
Congratulations, you’ve done all necessary to get rid of houseplant flies! The longevity of our cherished houseplants can be extended by removing these pests.
Do Coffee Grounds Repel Gnats?
No. There is no proof that coffee grounds keep gnats away, and they might even make the issue worse. Coffee grounds only add gasoline to the fire because fungus gnats prefer moist settings full of rotting organic matter. Coffee grounds won’t help you if you have gnats in your plants.
How Do I Get Rid of Plant Gnats Fast?
Using nematodes, the small worms that feed on fungus gnat larvae, is the quickest approach to get rid of fungus gnats. Results can be seen in as little as three days. They can be ordered online and delivered in a few days to your home.
What Naturally Kills Gnats in Plants?
Gnats in plants can only be eliminated by biological control agents like nematodes and pesticides. Fungus gnats can be temporarily controlled by pyrethrins or pyrethroid insecticides, but they are not a long-term fix, and they are not typically advised for use at home. Keep using nematodes for a quick, efficient, and secure fix.
Gnats can be eliminated by cinnamon?
By sprinkling diluted chamomile tea on the plants, adult fungus gnats can also be killed effectively.
Spread it over the soil’s top to kill the larvae and break the life cycle.
Control Fungus Gnats, Cinnamon A Natural Option
- Cinnamon powder is a popular and widely accessible natural fungicide that is highly effective in reducing fungus gnats.
- Cinnamon powder eliminates the fungus that the damping off larvae feed on.
- Simply sprinkle enough cinnamon powder across the top layer of soil is the only step required to use the cinnamon powder.
- This antifungal substance is a powerful technique to destroy the fungi that you often find in potting soil and decomposing plant materials.
Bacillus thuringiensis var israelensis
Bacillus thuringiensis var. israelensis, sometimes known as Bti, is a naturally occurring bacteria that kills a variety of worms, insects, and larvae. See our post on using Mosquito Dunks for fungus gnats for more information on Bti.
The particular strains of Bt, H-14, or israelensis kill fungus gnat larvae successfully.
Does vinegar eliminate gnats from indoor plants?
She asked me to write about a true issue she was having with her indoor plants. Of course! I bet many of you are struggling with the same issue.
Have you ever purchased houseplants for your home or office with the intention of bringing some nature indoors but noticed after a week or so that obtrusive small black flies are darting in and out of your line of sight with your computer screen? Ugh! You have a problem with fungus gnats!
Although fungus gnats resemble tiny mosquitoes or fruit flies, they are unrelated and do not bite. They can be spread by cut flowers, especially those with stale vase water, or even by plants with unsterilized soil (poinsettias can be the worst).
In moist plant soil, residential drains, and sewage areas, fungus gnats can be found. In wet soil, fungus gnats lay their eggs. Prior to developing into adult gnats and flying out of the plant soil onto your face, their larvae, which are only one-hundredth of an inch long, are almost impossible to notice. They eat plant roots, soil-borne leaves, and decomposing plant matter. It takes them around 10 days to grow. Indoors, they can reproduce all year long.
This issue is being exacerbated by the gentle care you provide your indoor plants, including watering them. The fungus gnats will like staying in your home if the soil of your houseplants is continually moist. The growing medium used for houseplants is another factor. Numerous potting mixture types contain components that hold onto moisture, and everything that promotes moisture also promotes fungus gnats. To avoid potential pests, Good Earth Plant Company only purchases from nurseries that pre-treat the soil.
So what can you do to combat these annoying little gnats? You must approach the issue from many angles.
Start by starting to wait longer between waterings for your indoor plants. One to two inches of the surface ought to be entirely dry. Sub-irrigation functions well for this reason, among others.
2. Make careful to get rid of any fallen or decomposing plant materials (leaves and roots) as these serve as fungus gnat larvae’s feeding sources. Place a few slices of uncooked potatoes on the surface of the soil to see if you have them. Take a look at the bottom after a few days. Are they chewed-looking? Your plants contain fungus gnat larvae.
3. You can cover the soil with a quarter- to-half-inch layer of diatomaceous earth or horticultural sand (NOT playground sand) to control the larvae. If you water it, the plant will dry out more quickly and fool the fungus gnats into thinking it is not a good site to lay eggs. Additionally, they are actually cut to death if they crawl across the DE.
4. Add one tablespoon of liquid dish soap and one teaspoon of white vinegar to the water every other time you water. The fungus gnat larvae will eventually perish as a result.
5. You can remove the plant from the pot, remove as much soil as you can without harming the plant, and then repot it to expedite the process. Place all of the used soil in a sealed bag and discard it. It cannot be applied elsewhere because doing so will just exacerbate the issue.
6. You can create organic traps on your own to get rid of the adult fungus gnats. You can pour a few drops of liquid dish soap to the bottom of a deep bowl after adding apple cider vinegar or red wine. Put it next to the infected indoor plants. The gnats adore it and will suffocate in it if they fall in. Every couple of days, replace it.
7. You can either buy or manufacture some sticky insect traps. Use cardboard pieces that are a vibrant yellow colour, and cover them with Vaseline. For optimal effects, place them horizontally over your plants. Use a card holder from your florist, or one that comes with a plant. Put the card holder with the sticky trap inside, then affix it to your plant.
8. Some backyard gardeners fervently advocate adding three percent hydrogen peroxide directly to the soil of your plants. I wouldn’t advise this as your first option if you have a plant that is very priceless or sensitive.
It could be extremely difficult to entirely eradicate fungus gnats on your own if they frequently infest your plants, especially those in your office. In one instance, the gnats were entering through the ventilation system from another office, as I’ve seen!
We only utilise plants from reputable growers, and our experts take great care to prevent conditions from becoming such that fungus gnats can easily reproduce. We quickly remove any infected plants from our care (which doesn’t happen very often) to prevent fungus gnats from spreading to the rest of your plants.