People in China traditionally like to plant some geomantic trees. In fact, most of these trees have certain medicinal effects, such as camphor wood appliances to repel insects, so it is also good to plant camphor trees at the door. Of course, some people think it stinks, but if it is far away, it still feels a little fragrant. Such trees also include eucalyptus. Eucalyptus leaf oil is a component of the pharynx-relieving sugar that we often eat, so it tastes bad.
Hanging sachets is one of the habits of ancient people in China. Many medicinal materials in sachets are also considered to have mosquito repellent effects, such as Pogostemon cablin, mint, perilla frutescens, Acorus calamus, citronella, star anise, dried tangerine peel, Liu Ding peel, cinnamon and clove. Of course, the most classic is the ancient mosquito-repellent incense, so the ancients said "light a match" and weave some dried wild Artemisia into straw ropes to burn. I think, in fact, many plants in Compositae have fragrance, so burning wormwood to repel mosquitoes is very common among the people. After burning wormwood, it actually smells good. In addition, it has a certain calming effect, warms the stomach, and it must be sweet to sleep. In this way, neem oil is used for lighting, burning orange peel, orange peel, grapefruit peel and so on. And burning rosin also played a certain role. In addition, some people burn tea and drink dry tea.
In western aromatherapy, there are also many essential oils or plants that can repel mosquitoes, such as basil, lavender, eucalyptus oil, celery rapeseed oil, cinnamon oil, orange peel oil, rue, Qilixiang and cordate telosma. Some trees are called mosquito repellent wood or mosquito repellent grass, but they don't necessarily have fragrance. For example, Melia azedarach and Impatiens balsamina are also plants that people often plant in front of and behind their houses. Speaking of neem, the azadirachtin it produces has a strong insecticidal effect. In addition, some plants have insecticidal effects, such as pyrethrum, Euphorbia, Datura stramonium, Pinellia ternata, Bowl flower, Stemona, Plantago, Xanthium sibiricum, Lobelia chinensis and so on.
In addition, it is said that mulberry and hawthorn flowers also have mosquito repellent effect. I wonder if it is useful to plant mulberry and hawthorn trees. It is found that citronellal and other components have mosquito repellent effect, so many mosquito repellent products such as mosquito repellent oil are available. There is a lot of citronellal in citronella, so a transgenic plant called natural mosquito-repellent incense is produced. The gene producing citronellal is transferred to African geranium, which has a strong function of evaporating gas into the air, so it becomes a natural mosquito-repellent incense.
Besides, I am from Zhangzhou, haha.