Most house guests are welcome, especially those that love and admire our indoor plants as much as we do, but there is one group of gate crashers that every gardener dreads. Fungus gnats cannot crawl through the layers of the fabric. You can water the plant through the sand, and meanwhile it will deter fungus gnats from laying eggs in the pot. If you have fungus gnats in your plant soil or fruit flies flying around your kitchen, then neem oil is a great gnat repellant and as an added bonus it can also kill aphids. Fungus Gnats are the bane of many gardeners with indoor plants, especially over the cooler winter months. That way, you can focus your treatment on just one plant instead of them all! Do not forget that neem oil is also an effective weapon against a wide variety of pests. Press question mark to learn the rest of the keyboard shortcuts. Fungus gnats (Bradysia sp.) A quick-filling drainage tray could also be a sign that the plant’s soil has poor water retention, is root-bound, or that water may be running around the sides of the root ball and soil – rather than seeping through. Also did you wait till just before the lights went out for the night to treat? For severe infestations, some folks may choose to completely remove the infected plant from the house. Use yellow sticky traps near, hanging from, or inside the potted plant to catch adult flies. Neem oil might kill some plants, especially if they are young and if the oil is applied too heavily. It should be diluted. The book, “Neem: A Tree for Solving Global Problems”, stated that neem is a natural method for pest control. It is usually recommended to water the plant with the solution, since only spraying the surface of the soil may not penetrate deep enough to kill all of the fungus gnat larvae. Discussion in 'Sick Plants and Problems' started by Placebome, Nov 26, 2019. Therefore, keeping new or infected plants in quarantine can be very effective at reducing the spread of fungus gnats to other potted plants. Check out our article all about properly mixing and using neem oil in the garden, or, for houseplants! The same as hydrogen peroxide. In addition to sand, there are other soil-topping products like this one (made from crushed recycled glass) that are specially made to eliminate fungus gnats from your potted plants. Neem oil is an all-natural insecticide for killing bugs on plants, and it works great. Leave overnight and check for the presence of the larvae on the potato the next morning – gnats are attracted to starch and cannot resist this tasty treat! These tiny, fly-like pests like to lay their eggs in the damp soil of indoor plants, where the larvae can sometimes feed on the roots of your plant. This is particularly important overwinter, when the irrigation requirement from indoor plants is much lower than other seasons. If you dry the top of the soil with damtacrus earth it will kill the eggs. As in the case of castile soap, I do not recommend using neem oil in pure form. Natural Organic Remedies. If it does, you may be overwatering! They most often only fly in short bursts, and otherwise crawl around. I’ll let them continue to dry. Neem oil (here a good one on Amazon) is another extremely effective organic insecticide that you could consider utilizing to rid yourself of a fungus gnat problem. Another good indicator of moisture control is the drainage tray or trough at the bottom of the pot. I found this to be an effective way to preventive these nasty fungus gnats from invading your marijuana plants. The eggs hatch into larvae, the larvae feed on organic matter within the soil for 2 weeks, and then they pupate. Yellow sticky traps to kill flying gnats—Gnats are attracted to yellow color and will die when they stick to the traps. This should be dry within a day of watering the houseplant, and not have standing water. Joined: Nov 1, 2019 Messages: 34 Likes Received: 6 #1 Placebome, Nov 26, 2019. Natural gnat control… We also hang these larger ones to catch gnats and other flying pests in our greenhouse. Neem oil for getting rid of gnats. Jane shares her favourite tips and techniques for getting rid of an unwelcome house guest, fungus gnats Ahh… the dreaded fungus gnat!! And while the adults can be an annoyance, it is the tiny (less than 5mm), black-headed, soil-dwelling larvae that can do some serious damage to the roots and stems of a huge range of indoor plants, chomping through the base of cuttings, soft stems and roots with a voracious appetite. You can also spray the upper portion of the plant to keep adult gnats at bay. If you are looking for highly-effective and reliable insecticides for getting rid of gnats not just immediately, but long term, look for products that contain permethrin, bifenthrin, cyfluthrin, and lambdacyhalothrin. It can also be used as a soil drench to kill annoying fungus gnats. The good news is – it’s easy to get rid of fungus gnats, once you know the tricks! are often first noticed in our houses or greenhouses in their adult form – small (about 3mm long) black to dark grey mosquito-like flies hovering in small groups around our beloved indoor plants. It’s safe in hydroponics use as well as in … More posts from the Autoflowers community. Fungus gnats can be tricky to get rid of because of their lifecycle as both a flying insect and larvae in soil. Water less frequently. Create and apply a dilute neem oil solution by following the manufacturer’s instructions on the neem oil product you select. to the top of the soil. These include mealy bugs, aphids, cabbage worms, thrips, whiteflies, mites, fungus gnats, mushroom flies, locusts, beet armyworms, the Japanese beetle and other leaf-feeding beetles. does neem oil kill fungus gnats Don’t overwater – Excessive watering can lead to the growth of algae in saucers and on the surface of the soil which fungus gnats will feed on. If you're in a notill style set up and soil drying isn't an option then a predator like Hyosaspsis miles is a good bet. You can choose to use a mild or natural option such as Neem Oil or dish soap, but they are not as effective on fungus gnats as some other commercial options. Neem oil can be used on fungus gnats it is an effective solution. Dilute the oil with water per manufacturer’s directions and directly drench the soil at the roots of the plant.