What plants can't be kept indoors, and what harm is there to the body?

Flowers that should not be placed indoors for a long time. The fragrance of orchids can make people overexcited and cause insomnia. If the pollen emitted by Bauhinia comes into contact with people for a long time, it will induce asthma or aggravate cough symptoms. Mimosin in mimosa is a highly toxic organic substance, which will make hair fall off after too much contact. The rich fragrance of Chinese rose flowers will make some people feel chest tightness and discomfort, and it is difficult to hold their breath. The fragrance of lily will also make people's central nervous system excessively excited, causing insomnia. At night, a large number of particles that stimulate the sense of smell will be emitted, which will make patients with hypertension and heart disease feel dizzy, depressed and unwell for a long time, and even aggravate their illness. The fragrant smell of coniferous flowers and trees can stimulate people's stomach, which not only affects their appetite, but also makes pregnant women feel uncomfortable, disgusting and dizzy. Tulip flowers contain a toxic alkali, and long-term contact will accelerate hair loss. Pine and cypress plants, such as indoor plants, release more. Geranium can cause allergic reactions in some people; Tulip flowers contain toxic alkali, which will make people dizzy and make their hair fall off if exposed for too long. Jade cloves are put indoors for a long time, giving off peculiar smell, and some people will cause asthma and boredom; The smell of elderberry can also make people sick and dizzy. Poisonous flowers include Pinellia ternata, Bambusa bambusa, Bawangbian, tiger thorn, coral flower, purple wood flower, Lycoris radiata, cicada and so on. Therefore, the flowers listed above should not be placed indoors for too long. In addition, fungal spores produced by the soil in the flowerpot will spread into the indoor air, causing surface or deep infection of human body, and may also invade human skin, respiratory tract, external auditory canal, meninges and brain. This will make people suffering from diseases and poor health worse. Therefore, it is not suitable to grow flowers in the patient's room. According to reports, Zi Yuan, Astragalus membranaceus, plants containing tobacco and Celosia cristata can attract a large number of radioactive elements such as uranium; Aloe, chlorophytum and Eupatorium adenophorum can remove formaldehyde; Ivy, rose, rose, aloe and evergreen can effectively remove trichloroethylene, sulfur specific hydrogen, benzene, phenol, hydrogen fluoride and ether indoors; Pigeonpea, Phyllostachys pubescens and Eupatorium adenophorum can absorb more than 80% of indoor harmful gases; Asparagus can remove heavy metal particles; Citrus, rosemary and chlorophytum can greatly reduce bacteria and microorganisms in indoor air. In addition, chlorophytum can effectively absorb carbon dioxide; Some fleshy flowers of cactus rarely emit carbon dioxide at night; Wisteria has strong resistance to sulfur dioxide, chlorine and hydrogen fluoride, and also has certain resistance to chromium. Some leafy and water-loving plants, such as radish, can keep the indoor air humidity in an excellent state. Although raising flowers at home has many advantages, we should pay attention to the arrangement of flowers in the bedroom, because flowers release oxygen and absorb carbon dioxide during photosynthesis during the day; But at night, flowers do not carry out photosynthesis, not only spit out carbon dioxide, but also absorb oxygen. Therefore, in the bedroom, it is best to put less or no flowers at night to avoid them competing for oxygen and affecting health. The functions of various flowers, such as camellia, cyclamen, violet, tuberose, impatiens, Dianthus, gladiolus and so on. The highly toxic sulfur dioxide can be converted into non-toxic or low-toxic sulfate through leaves. Narcissus, mirabilis jalapa, chrysanthemum and protein can transform nitrogen oxides into plant cells. Chlorophytum and aloe can absorb a lot of indoor formaldehyde and other pollutants, and eliminate and prevent indoor air pollution. Especially if you put a pot in the living room, its leaves will "eat" harmful gases such as carbon monoxide in the indoor air within 24 hours, and its effect even exceeds that of the air filter. Pomegranate and chrysanthemum have the ability to absorb sulfur, hydrogen fluoride and mercury. Germicides secreted by flowers such as jasmine can kill some bacteria in the air and inhibit the growth of tuberculosis, dysentery and typhoid fever. The fragrance of jasmine can relieve dizziness and cold and stuffy nose. People with headaches, dizziness, colds and blurred vision often smell chrysanthemums. Cactus plants release carbon dioxide during the day and absorb carbon dioxide at night to release oxygen, so it is also quite good to put a cactus in the bedroom. Besides cacti, orchids of Orchidaceae, Clivia of Amaryllidaceae and Narcissus also have this peculiar function. Nowadays, people pay more and more attention to the quality of indoor environment. Adding green plants to indoor decoration can not only beautify the room, but also improve the indoor air quality, which can kill two birds with one stone. Special note ● Although flowers have many benefits, you can't regard the living room as a "greenhouse", because indoor ventilation is limited, there are too many flowers and trees, which will compete with people for land, and most of the living rooms are closed at night. In addition, the carbon dioxide exhaled by pets in soil, human body and flower pots will increase the concentration of carbon dioxide, resulting in human hypoxia, which is not good for health. ● The purification function of plants is limited. So always open the window to let the air convection. ● Pine and cypress bonsai should not be placed indoors, and its rich pine fragrance will affect people's appetite. ● Cloves, cordate telosma, etc. Breathing a lot at night, the harmful gases discharged make people with high blood pressure and heart disease feel stuffy, and normal people will also have symptoms such as dizziness and insomnia. ● Western hydrangeas and colored plums can cause allergic reactions in some people. Tulips and mimosa contain toxic alkali, which can cause hair loss. Recently, NASA scientists found that many evergreen foliage plants and green flowering plants have the function of eliminating toxic chemicals in buildings. The study also found that plants not only rely on leaves to absorb substances, but also the roots of plants and bacteria in the soil contribute to the removal of harmful substances. Zhou, an engineer at the Indoor Environmental Monitoring Center of China Decoration Association, believes that the following two types of plants are most suitable for indoor use. Plants that can absorb toxic chemicals: aloe, chlorophytum, Eupatorium odoratum, Eupatorium odoratum and Phyllostachys pubescens are natural scavengers, which can remove harmful substances in the air. Studies show that Eupatorium adenophorum and Eupatorium adenophorum can absorb more than 80% of indoor harmful gases, and their ability to absorb formaldehyde is super strong. Aloe vera is also a good hand at absorbing formaldehyde, which can absorb 90% formaldehyde contained in 1 m3 air. Ivy, cycad, chrysanthemum, kumquat, pomegranate, Scutellaria barbata, rose, camellia, pomegranate, Milan, daisy, Chimonanthus praecox, marigold, etc. can effectively remove harmful substances such as sulfur dioxide, chlorine, ether, ethylene, carbon monoxide and nitrogen peroxide. Orchids, osmanthus fragrans, wintersweet, cauliflower taro and osmanthus fragrans are natural dust collectors, and their cilia can intercept and absorb suspended particles and smoke in the air. The volatile oil produced by fragrant flowers that can kill germs, such as rose, osmanthus fragrans, violet, jasmine, lemon, rose, carnation, lily of the valley and crape myrtle, has obvious bactericidal effect. Crape myrtle, jasmine, lemon and other plants can kill diphtheria, dysentery bacteria and other protobacteria within 5 minutes. The scents of roses, carnations, lilies of the valley, violets, roses, osmanthus flowers and other plants have obvious inhibitory effects on the growth and reproduction of mycobacterium tuberculosis, pneumococcus and staphylococcus. Cactus and other succulents native to tropical arid areas, the stomata on their succulent stems are closed during the day and opened at night, which absorbs carbon dioxide and produces oxygen at the same time, increasing the concentration of negative ions in indoor air. Plants such as Hupilan, Huweilan, Tequila, Palm, Kale, Sedum, Rooting and Pineapple can also purify the night air. Lilac, jasmine, rose, violet, mint and other plants can make people relax and feel happy, which is beneficial to sleep and improve work efficiency. Unfavorable flowers: cloves and cordate telosma will emit particles that stimulate the sense of smell at night, which has adverse effects on patients with hypertension and heart disease; The floral fragrance of oleander can make people sleepy and decrease their intelligence; The particles emitted by hydrangea will make people's skin allergic and itchy; Tulip flowers are toxic and alkaline, and too much contact can easily make people's hair fall off; The oily smell of pine and cypress flowers and trees will affect people's appetite. Evergreen, for example, contains some toxic enzymes, and its stem and leaf juice is very irritating to the skin. If the baby who is not sensible plays with it or bites it by mistake, it will cause throat edema and even vocal cord paralysis and aphonia due to strong stimulation of oral mucosa. Some flowers and plants are deadly to people, such as Datura stramonium and kidney tea, which are highly toxic. In addition, if the particulate matter emitted by tulips and hydrangeas is exposed for too long, the skin will be allergic and itchy. Experts believe that it is not appropriate to decorate these flowers and trees with cordate telosma in the bedroom: it will emit a lot of particles that stimulate the sense of smell at night, which will make patients with hypertension and heart disease feel dizzy, depressed, uncomfortable and even aggravate their illness; Tulip: its flowers contain a toxic alkali, which will accelerate hair loss if exposed for too long; Nerium oleander: It can secrete a milky white liquid, which will poison people for a long time, causing drowsiness, mental decline and other symptoms. In addition, I suggest that you can put Dahlia, because it can absorb harmful substances such as hydrogen peroxide. These flowers are big and beautiful.