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Last update on August 9 , 2023

Houseplants bring a dazzling , outdoorsy , peaceful energy to any abode ! They also help to cleanse your space by purifying the air around them . However , while you may be eager to produce a hobo camp - esque vibration deep down , you in all probability are n’t looking for a full immersion experience – with microbe fly all over your household ! regrettably , fungus gnat are a fairly common trouble with mansion plants . The in force news is – it ’s easy to get free of fungus gnat , once you know the illusion !

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Read along to learn how to kill fungus gnat in your house plants . These tips can also be apply to other plants and soil too , such as in potted plant in a greenhouse , or even alfresco . When it comes to fungus gnats , prevention is fundamental ! Therefore , we ’ll go over a few way of life to prevent fungus gnat first , so maybe no intervention will be want at all . Yet when you already have an plague on your manus , there are several organic method you could use to get rid of fungus gnats .

5 Natural Ways to Get Rid of Fungus Gnats:

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Let ’s go over each of these options ! But first …

What are Fungus Gnats?

Fungus gnat admit several species of lilliputian , forgetful - lived flies . They arecommonly jumble with yield fly sheet , which are similar but have more or less unlike figure , feed , and breeding habits . Rather than fruit , fungus gnat are take out to the tender , damp , cozy environs that you ’ve created for your potted houseplants . They may catch a drive into your home on a new houseplant booster you adopt , or sneak in through doors , window , or other pocket-sized crevices in your dwelling house .

Fungus gnats reproduce by laying egg in the top couple inches of damp soil . The bollock brood into larvae , the larvae feed on constitutional matter within the soil for 2 workweek , and then they pupate . A couple of days subsequently , the adult flies emerge and start buzzing around . You ’ll commonly see fungus gnats hanging out on the soil surface , boundary of the wad , or maybe around the drainage hole of the deal . They most often only fly in forgetful bursts , and otherwise creep around .

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Are Fungus Gnats Harmful to Plants or People?

Fungus gnat are not harmful to citizenry , away from being annoying ! In belittled bit , they are not harmful to your houseplant either . However , theUniversity of Californiawarns that when go forth uncurbed , large populations of fungus gnat can become damaging to plants . Their larvae may start to feed on the works ’s roots , which causes stress , yellow , wilting , and potential expiry of the works in the most serious cases . Fungus gnat can also spread disease that contribute todamping off – a condition when untried plants or seedling dead wilt and die .

3 WAYS TO PREVENT FUNGUS GNATS IN HOUSEPLANTS

1) Moisture Control

As we ’ve already established , fungus gnats love moist soil – and need it to breed !   Therefore , overwatering your plant can easily contribute to a fungus gnat problem . To forbid and conflict fungus gnats , avoid overwatering your plantsin the first place . Only provide water when the top duo inches of dirt has dried out . Remember , that top shallow ground is where the fungus gnat are drawn to !

Thankfully , most houseplants do n’t mind if you reduce back on their water a bit . trueness be severalize , many works parent are guilty of watering their plants more than they should . So much so , thatoverwatering is a common causa of death in houseplants !

Another good indicant of moisture control is the drainage tray or trough at the bottom of the pot . This should be dry within a day of irrigate the houseplant , and not havestanding water . If it does , you may be overwatering ! A warm - meet drain tray could also be a sign that the plant life ’s dirt has poor water retentiveness , is origin - attach , or that water may be running around the sides of the ascendant ball and dirt – rather than seep through . To learn more about houseplant tutelage bakshish for lacrimation , grease , fertilizing and more , look into out this article – “ Houseplant Care 101 : The Ultimate Guide to Happy & Healthy Indoor Plants ” . See how to irrigate and care forair plants here .

A diagram depicting the life cycle of a fungus gnat starting from adulthood to laying eggs, larva, pupa, and into an adult. There are an amount of days listed for each part of the life cycle.

2) Soil Choice & Modifications

When pot up a new houseplant , use a reputablequality bagged potting ground . One that has been pasteurized or desexualize should n’t have springy eggs , larvae , or flies in it .   Avoid using soil from your yard , as it may bring unwanted pests inside along with it .

After potting your houseplant , moot impart a bed of horticulturalsand(not play sand ! ) to the top of the soil . you may water the plant through the sand , and meanwhile it will deter fungus gnat from laying eggs in the pot . In gain to sand , there are othersoil - topping products like this one(made from crushed recycled glass ) that are specially made to eliminate fungus gnat from your potted plants .

3) Prevent Spread

When you fetch home a novel houseplant , expect for the presence of fungus gnats . regrettably , only the flies will be obvious since the larva or eggs are very difficult to detect . It is a good idea to keep new plants away from your other houseplant for several daylight to supervise , especially if you have suspicion that they may be infect . think , fungus gnats do n’t typically fly foresightful distances unless they have to !

Therefore , keeping new or infected plants inquarantinecan be very in force at melt off the spread of fungus gnat to other potted plants . That way , you could focus your intervention on just one plant rather of them all ! For severe infestations , some folks may choose to completely remove the infected plant from the firm .

5 WAYS TO GET RID OF FUNGUS GNATS

1) Eliminate Excess Moisture

At the first star sign of a fungus gnat issue , this should be the initial footmark . permit the top few inches of the plant ’s territory to dry out . This will make the soil untempting to adult flies , forestall them from laying more eggs . If you ’re lucky , this can kill a mickle of the testicle and larvae too !   what is more , eradicate standing water . This include in the pot drainage tray , or even from other generator nearby – such as leaky pipe , condensate puddle , and so on .

2) Sticky Traps

Fungus gnats are drawn to light , as well as the colour xanthous . Use yellow embarrassing sand trap near , attend from , or inside the potted plant to catch adult fly . These sticky traps on stakesare project specially for potted plants ! We also hangthese large onesto catch gnats and other flying pests inour greenhouse .

However , keep in mind that fungus gnats expend the legal age of their lifecycle as ball and larvae , so gluey traps will only serve a constituent of the trouble right aside . If the adult flies have already laid more testis , the bike will continue . Yet reducing the grownup fly population with sticky traps does help put a dent in the problem overall ! Continue to use sticky traps forseveral hebdomad to to the full go the cycleand get rid of fungus gnat .

3) Use Hydrogen Peroxide to Kill Fungus Gnats

If the dim-witted combination of dry out the territory and hanging a few viscous traps does n’t get the business done , there are severalnatural and non - toxicproducts used to down fungus gnats as well . One pick is to utilize something you probably already have around your house – H hydrogen peroxide ! The in force tidings ? It is pronto available , well-to-do to work with , and wo n’t harm your house plants . The best newsworthiness ? Hydrogen peroxide reportedly kill fungus gnat eggs , larvae , pupae , and adult flies on contact . arrivederci , sucker .

To make a hydrogen hydrogen peroxide resolution , first be trusted you ’re using the distinctive 3 % household hydrogen hydrogen peroxide , not the industrial - strength hooey ! Dilute it down slightly andmix 1 part 3 % atomic number 1 hydrogen peroxide to 4 parts water(e.g . 1 cup peroxide and 4 loving cup water ) .

tolerate the soil to dry slightly before app . Then , either spray the surface of the soil exhaustively until it saturates down a duet of inches . Or , for a deeper and more effective treatment , water the entire plant with it – soaking all of the dirt . It will fizz and froth , which is totally normal . It quickly breaks down into molecules of water and oxygen , which clearly are n’t a danger for plant !

A hand is holding a small amount of soil taken from a potted plant in the background. The soil is light brown and looks fairly dry, there is a decent amount of perlite or pumice mixed in to the soil.

4) Biological Control of Fungus Gnats – Bacillus Thuringiensis

Another non - toxic way to care for fungus gnats is to use biologic control , such as Bacillus Thuringiensis . Specifically the subspeciesisraelensis , also known asBti . Bti is a by nature - occurring bacteria that is found in dirt . accord to the EPA , Bti curb spores that bring forth toxin that specifically target andonlyaffect the larvae of the mosquitoes , bean aphid and fungus gnats . substance , it is not harmful to other organism .

You may have heard us talk about Bt before , but note that there are a few different types of Bt ! Bti is the one that is effective against fungus gnats , whilethis Bt product(Bacillus thuringiensis kurstaki ) fair game cat such as moolah moth worms and lucre measuring worm , but is ineffectual at killing fungus gnat .

To apply Bti , follow the instructions for a“soil drench ” on the product that you purchase . It is unremarkably advocate to irrigate the plant with the solution , since only spraying the airfoil of the soil may not penetrate deep enough to kill all of the fungus gnat larvae . repetition as needed , follow the instructions . Another popular option is call “ Gnatrol ” .

A close up image of a yellow sticky trap for flying insects. There are many small fungus gnats stuck to the trap, they are drawn to the color and easily become stuck on the trap due to how sticky it is.

5) Neem Oil Soil Drench

In a exchangeable method to H peroxide or Bti , a neem oil drench can also be applied to the infected soil to kill fungus gnat . Do not apply flat hard neem oil though ! make and apply a dilute neem oil solution by follow the manufacturer ’s instructions on the neem fossil oil product you choose . Watering with a dilute neem fossil oil solution can aid to pop fungus gnats , and also fight off them in the future .

When shopping for neem fossil oil , I always suggest pick out ahigh quality cold - exhort stark neem oilover pre - miscellaneous Cartesian product that contain a lot of other additives . to fully combine neem oil with water for an even and in effect covering , the neem oil will need to beemulsifiedfirst – because oil and body of water do n’t well fuse . Check outour clause all about the right way mixing and using neem oilin the garden , or , for houseplants !

And that is how you prevent and get rid of fungus gnats in houseplants!

For more information on garden pests , see this serial of article :

A room is shown of a house, the far wall contains a fireplace and mantle. There are houseplants scattered throughout the room, many large varieties in the far corners of the room, some hanging in each corner of the room, and one hanging plant has one of its vines strung across the length of a wall. There is a couch with a sectional on one side and two house cats sit in the middle of the image, one  on an area rug and another nearby on a cat scratcher that doubles as cat furniture.

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