1. If you find that mint has insects, you must first determine what kind of insects the mint has. Usually the most common one is Xiao Heifei. The larvae of the small black fly live in the soil where mint is planted. The insect body is transparent and mostly lives in the surface soil. The adult small black fly has wings and is attracted by the smell of the fruit and flies around the house. For the larvae of the little black fly, we can spread a layer of fine sand on the pot soil to prevent the larvae of the little black fly from emerging. We can also pour tobacco water or oleander water into the pot soil to kill the larvae in the mint soil. Small black fly larvae. For adults of Xiao Heifei, you can hang a yellow board on the edge of the pot and use the yellow tendency of Xiao Heifei to trap and kill the adults.

2. Mint likes water, but if you water it too frequently, the soil will be wet for a long time, and the soil where mint is planted will easily attract black flies. If water accumulates for a long time, it will easily cause the root system of mint to rot. . When watering mint, it is best to follow the watering principle of "see dry, see wet". You can weigh the weight of the pot soil with your hands, and water it thoroughly when it feels obviously lighter. Mint loves the sun. For daily maintenance, move the mint potted plant to a place with sufficient sunlight and let it get more sun to ensure that the plant has strong stems and green leaves. If there is lack of light, the mint will grow leggy and the leaves will turn yellow. During the vigorous growth period of mint, you can topdress mint with a balanced nitrogen, phosphorus and potassium fertilizer every half a month to promote vigorous plant growth.