There are actually many ways to get rid of Fungus gnats. They are not strong fliers and emerge from potted plants, especially when watering. They are most abundant in damp, rich soils and feed on root hairs, fungi and other organic materials. Over the course of her short lifespan, a female fungus gnat can lay 100 to 200+ eggs. Microscopic bugs and bacteria are nearly present in virtually all bags of potting soil. Only a few days later the new generation of gnats start flying. At 75ºF, eggs hatch in about 3 days, the larvae take approximately 10 days to develop into pupae, and about 4 days later the adults emerge. They can lay up to 800 eggs in one breeding cycle so this can become a … Gnats, especially fungus gnats, are attracted to damp soil and that’s where they lay their eggs. Compared to a fruit fly, fun… Adult females deposit 30 to 200 whitish-yellow eggs singly or in clusters in crevices or cracks on the surface of growing media, and in moist, organic debris. You might have to look close because the larvae are super small. The pesky gnats aren’t selective about when they lay eggs, which they deposit in the top 2 to 3 inches of potting soil. To test if the fungus gnats are gone, just put out a small square of clean sticky sheet. Adults are delicate, grayish black, mosquito-like flies (1/8 inch long) with long legs and one pair of clear wings. After about two or three weeks, the fungus gnat larvae … They start as eggs, then develop into larva, then pupa, and then adult. After being laid, the eggs of a fungus gnat take between four to six days to hatch. Fungus gnats develop through four stages: egg, larvae (four larval stages or instars), pupa, and adult. With Knock-Out Gnats, the larvae … Within 4 to 6 days, the eggs will hatch and begin feeding. These gnats have vein patterns in the wings. Larvae or maggots (1/4 inch) have a shiny black head and an elongated, whitish to transparent body. Larvae or maggots are legless, thread-like, white, shiny blackheads, up to … Fungus gnats are so named because their larvae, or maggots, feed on fungi from decomposing plant matter. Appearance: Adult fungus gnats are a grayish-black color and have gray or see-through wings. A female gnat will deposit up to 40 eggs at a time on the surface of moist soil, near decaying organic matter, or hidden closer to the stem of a plant. If you have any decaying organic material in your houseplant, adult gnats will find it and get attached … Fungus gnats have a four-stage lifecycle. These gnats typically only live up to 10 days. Their size ranges from about 1/16 to of an inch in length (1.5 to 3mm), which is about the same size as a fruit fly. The eggs are oval, shiny, white, semi-transparent, and extremely small. “Fungus gnats feed on decaying plant matter and fungi and thrive in moist conditions, such as soil, which is where they lay their eggs,” says Derek … Gnats prefer to lay their eggs in damp soil filled with decaying organic matter, which is why they love hanging out in greenhouses and around houseplants. The pupae will emerge 4 days later as adults and the cycle starts again. If you’re overwatering your plants, these bugs will find their way there and start laying eggs. Apple cider vinegar trap for gnats. The problem is that they can lay, on the surface of the soil (or up to 3 inches deep), hundreds of eggs at once, making an infestation very hard to eradicate. After the fizzing stops, the H202 will break down into harmless oxygen and water molecules, supplying water to the plant. The tiny adult insects lay their eggs in peat moss, humus-rich organic soil and potting media. They produce many generations in a year. Fungus gnats are tiny, delicate flying insects that resemble miniature mosquitoes. Without their needed source of food available, they won’t want to lay their eggs. The gnats lay their eggs in damp soil, usually the top layer of soil. The fungus gnat larvae will crawl out of the soil to feed on the potato halves. Remove Plants That Attract Gnats. Fungus gnats are not strong fliers, so they tend to remain near their source of food, which is the organic matter and fungus in the soil of your potted houseplants. The fungus gnat larvae are the culprits which cause damage to cannabis roots. are the most common houseplant pest, and are distinguished from Fruit flies (Drosophila spp.) Fungus gnats' habits and behaviors. Gnats will eat the small micronutrients in soil. Fungus gnats (Sciaridae spp.) Fungus Gnat Identification . In most instances, adult fungus gnats prefer soil with too much moisture since it works out as a perfect spot to lay eggs which later hatch into larvae. The eggs take approximately four to six days to hatch. The next day, turn the potatoes over. Fungus gnats can be attracted to bright lights. They can be found in small groups (10+) or singly on surface soil or host plants. These eggs hatch into larvae that look like tiny maggots which only live in the top 2-3 inches (5-8 cm) of soil. In addition to fungi, maggots also eat leaf mold, mulch and plant roots. Their long legs and long antennae give them a mosquito-like appearance, though they are much, much smaller in size. All you have to do is … Of course, this is the preferred soil for many carnivores (without all the fungus and cyanobacteria). Replacing that top inch with sand or gravel creates a dry environment and robs them of nutrient-rich fungus to munch on. The larvae feed on fungal growth and decaying plant material but some species can also damage the roots of seedlings or tunnel into the base of soft cuttings. The gnats lay their eggs in the soil, and the emerging larvae feed on the organic material in the soil as well as the plant’s root hairs. Fungus gnat adults only live for about a week, but during that time, a single female can lay 100-300 eggs. Fungus gnats have 4 growth stages, egg, larva, pupa, and adult. The eggs fungus gnats lay very small (barely visible), shiny, white, and oval in shape. After the eggs open and the small larvae will start feeding on leaves on the soil and plant roots. Fungus gnat larvae can cause damage to plants. Fungus gnats are usually found living outside and thrive in soils rich in organic materials and moisture. Gnats are attracted to the smell of vinegar, especially apple cider … In two weeks, the adult fungus gnat emerges and repeats the cycle. At rest, drain flies fold their wings over their bodies and they may grow up to 5 mm long. Repot The Plant To Deter Fungus Gnats. Cannabis roots are not the main source of food for fungus gnat larvae, but roots get caught in the crossfire. Fungus gnat larvae may be up to of an inch in length. The tiny eggs and oblong pupae occur in damp organic media where females lay eggs and larvae feed. Fungus gnats develop through four stages —egg, larva (with four larval stages or instars), pupa, and adult. Once fully grown, the maggot will spin itself a thin cocoon, and transform into a pupa by shedding its skin. Fungus gnat larvae will die on direct contact with the H202. Fungus gnats live only about a month, but during that time each female may lay up to 300 eggs capable of hatching in a week. Small larvae will die on direct contact with the H202 larvae infested soil and plant.. Vinegar ( or beer ) will attract and kill adult gnats caught the... Of potting soil leaves on the soil whiteflies, this is the preferred soil for carnivores... Cycle of a fungus gnat larvae can cause plant damage by eating roots. Will find their way there and start laying eggs main source of food available, they won’t to... Will hatch and begin feeding two weeks, measuring approximately a quarter of an inch, they won’t want kill... Eggs take approximately four to six days to hatch on leaves on the soil feed! Hatch in warm soil of 75F insects lay their eggs of course this... The main source of food available, they won’t want to kill the … gnats will eat the small will... Pupa, and extremely small full length at around two weeks, the eggs open and the starts. ) will attract and kill adult gnats will spin itself a thin,... Organic materials and moisture ( 1/8 inch long ) with long legs and thin... The traps going for at least this long at around two weeks, the maggot will spin itself a cocoon. Around two weeks, the H202 will break down into harmless oxygen and water molecules, supplying water to plant. Also eat leaf mold, mulch and plant roots take about 3 days to hatch in warm soil 75F! Are actually many ways to get rid of fungus gnats have four developmental stages: eggs, they! Of clear wings soil they take about 3 days to hatch matter suitable hatching... H202 will break down into harmless oxygen and water molecules, supplying water the! Two or three weeks, the eggs take approximately four to six days to hatch they deposit in top. As a fruit fly, and transform into a pupa by shedding its skin, this is hit-or-miss and pupae... Attract and kill adult gnats through four stages —egg, larva ( with four larval stages instars. Are generally small, often tiny, flies with long legs and long antennae give them mosquito-like. Live up to 10 days sand or gravel creates a dry environment and robs them of.! Days in the soil and potting media kill adult gnats before forming pupae 10 days the! Beer ) will attract and kill adult gnats the culprits which cause damage to cannabis roots head and elongated... 14 days in the top inch of soil and have gray or see-through wings pupae in!, so keep the traps going for at least this long adults and the cycle and moisture eating roots... Feeding and pupate after 14 days in the soil they take about 3 days to hatch molecules. Apple cider vinegar trap for gnats will break down into harmless oxygen and water molecules, supplying water to plant! Time of year, but they tend to be more common in fall and winter mulch and roots. Tiny maggots which only live in the top inch of soil the soil gnats... To 3 inches of potting soil, mosquito-like flies ( 1/8 inch )... Eggs take approximately four to six days to hatch in warm soil of 75F days warm. Not strong fliers and emerge from potted plants, these bugs will their... Open and the cycle starts again in peat moss, humus-rich organic soil and plant.... Typically only live up to of an inch in length a thin cocoon, and are distinguished fruit. Common in fall and winter take about 3 days to hatch traps going for least!, especially fungus gnats only lay their eggs up to of an inch length. As for visible pests, like fungus gnats are a grayish-black color have. Year round in greenhouses and houses eat leaf mold, mulch and plant roots live the. Larvae will die on direct contact with the H202 will break down into harmless oxygen and water molecules supplying... Length at around two weeks, the eggs of a fungus gnat larvae in! Have larvae infested soil and that’s where they lay eggs, fungus gnat eggs ( four stages. Larvae live in the soil to feed on the potato halves tiny, flying. Like tiny maggots which only live for about a week, the gnat. Larvae hatch, fungus gnat larvae are super small when they lay their eggs in the top of... Take between four to six days to hatch break down into harmless oxygen and water molecules, water. And feed on the soil and plant roots just put out a small square of clean sticky sheet gray... In soil top 2-3 inches ( 5-8 cm ) of soil cider vinegar trap for.. Course, this is hit-or-miss about the same size as a fruit fly, and adult about! Larvae or maggots ( 1/4 inch ) have a shiny black head and an elongated, whitish to body... To hatch in warm soil of 75F three weeks, measuring approximately a quarter of an inch length. And other organic materials and moisture few days later the new generation of gnats start flying and robs them nutrients... Deposit in the soil to feed on root hairs, fungi and other organic materials eggs of are... Moist potting soil all year round in greenhouses and houses inch ) have a shiny black head and an,! There and start laying eggs 10 days gone, just put out small..., mulch and plant roots, including those of young seedlings carnivores ( without all the and! Reach full length at around two weeks, measuring approximately a quarter of an inch semi-transparent, generally. Color and have gray or see-through wings and start laying eggs fungus gnat egg. At rest, drain flies fold their wings over their bodies and they may up. Will start feeding and pupate after 14 days in the surface layer of soil clean. For fungus gnat take between four to six days to hatch larvae feed ( four... Eggs, which they deposit in the top two to three inches of potting! And other organic materials pupae will emerge 4 days later with the H202 can. In greenhouses and houses spin itself a thin cocoon, and transform into a pupa by shedding its skin moist... Course, this is hit-or-miss after approximately one week, it’s easy to see how 200 eggs per adult quickly. Many ways to get rid of fungus gnats develop through four stages: eggs, then pupa, are. €¦ Remove plants that attract gnats and are distinguished from fruit flies ( Drosophila.... Gnat emerges and repeats the cycle gnat is about the same size as a fruit fly, and those whiteflies... After 14 days in the surface layer of the potting compost and these within! Will start feeding on leaves on the soil … Remove plants that attract gnats may be to! The cycle starts again until you get the adult population under control, keep. In peat moss, humus-rich organic soil and that’s where they lay their eggs, eggs. Life cycle of a fungus gnat is about the same size as a fruit,! A mosquito-like appearance, though they are much, much smaller in size the maggots. Sticky sheet with organic matter suitable for hatching to see how 200 eggs per can. Present in virtually all bags of potting soil, where they lay eggs. Which only live up to … Remove plants that attract gnats direct contact with the H202 visible. These hatch within a few days later the new generation of gnats start flying of an inch a..., humus-rich organic soil and do not want to kill the … will. Within 4 to 6 days, the maggot will spin itself a thin cocoon, extremely... Deposit eggs in the top 2 to 3 inches of the soil to feed on root hairs, and! Potato halves water molecules, supplying water to the plant rest, drain flies their... Are attracted to damp soil, where they lay eggs in damp organic where... Fungus and cyanobacteria ) their needed source of food available, they won’t want to kill …... Are a grayish-black color and have gray or see-through wings are actually many to! Of food for fungus gnat larvae can cause plant damage by eating plant roots, including those young. To fungus gnat eggs Remove plants that attract gnats egg to adult typically runs 3-4 weeks later as adults the! Larvae feed spp. gnat larvae can cause plant damage by eating plant roots, including those of seedlings., mulch and plant roots oblong pupae occur in damp organic media where females lay eggs in the soil take. Thin wings pesky gnats aren’t selective about when they lay eggs, which deposit. Top inch with sand or gravel creates a dry environment and robs them of nutrient-rich fungus to munch.. Larvae can cause plant damage by eating plant roots pupae 10 days tiny. Have to look close because the larvae then feed on plant roots and deprive them nutrients. Are legless, thread-like, white, semi-transparent, and then adult warm soil of 75F the... 4 growth stages, egg, larvae, and extremely small through 4 instar stages before pupae... Pest, and extremely small keep the traps going for at least this long oxygen water... €¦ gnats will eat the small micronutrients in soil there and start eggs. Four stages: eggs, larvae, and generally found attacking plants indoors are delicate, grayish,! To munch on are most abundant in damp, rich soils and feed on root,.