All of a sudden they appear, those bothersome little black flies. If it’s not a fruit bowl with ripe bananas, you may be suffering from fungus flies. These tiny flies lay their eggs in the soil of your plants, larvae then hatchs from the eggs which eats the roots of your plant. Not a good idea. This issue can be tackled in a few easy steps. 1 Make sure your soil of your plant dries, dry soil prevents larvae moving as freely. 2. Put some white sand on top of the soil of your plants. The flies will be unable to lay eggs here. It is important to do it with all your plants, otherwise the problem will only relocate. 3. Buy nematodes of organic origin. Mix the nematodes with some water and they will eat the larvae of the flies. At PLNTS.com nematodes are available to purchase in our care range.