Fungus gnats buzzing around your urban planter boxes are more than a nuisance; they can harm young plants. These tiny flies thrive in moist, organic-rich soil. The key to control is disrupting their life cycle. First, let the top layer of soil dry out completely between waterings, as gnats lay eggs in damp soil. This simple step is often the most effective. For active infestations, insert yellow sticky traps into the soil to catch adult gnats. A powerful organic solution is to water your plants with a mixture containing beneficial nematodes, specifically *Steinernema feltiae*. These microscopic worms seek out and destroy gnat larvae in the soil. You can also make a diluted solution of 3% hydrogen peroxide (one part peroxide to four parts water) to drench the soil, which kills larvae without harming your plants. To prevent future problems, avoid overwatering, ensure your planter boxes have excellent drainage, and cover the soil surface with a layer of sand or gravel to block egg-laying. Regularly removing decaying plant matter also removes their food source. With consistent care, you can reclaim your green space from these pests.
How do I deal with fungus gnats in my urban planter boxes?
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