What flowers are not suitable for keeping at home?

Many people like to raise flowers indoors to improve and beautify the indoor environment. Planting suitable plants indoors will decorate the environment and purify the air; However, if the choice is improper, it will cause indoor pollution. Therefore, indoor flower cultivation should pay attention to:

Choose a good variety: indoor flowers and trees that are evergreen all the year round, or varieties that can absorb toxic gases are the most suitable, such as chlorophytum, asparagus, evergreen, cactus, tortoise shell bamboo, ivy and so on.

Unfavorable flowers: clove and cordate telosma can 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.

Don't raise flowers of "Fragrant Family": When roses and mignonette are together, mignonette will wither, but mignonette will release a substance before withering, which will poison the roses and kill them. Young corn poppy, orchids, carnations, violets and lilies are difficult to get along with other flowers, leading to plant death.

Patients should not plant flowers indoors: fungal spores produced by soil in flowerpots will spread into 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 is even worse for patients who have already suffered from diseases and poor physical condition, especially leukemia patients and organ transplant recipients.

Some flowers contain substances harmful to human body and should not be placed in the living room, especially if there are children at home to prevent accidental poisoning. 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. The fragrance of flowers is mostly beneficial to health, but some plants have too strong fragrance, such as cordate telosma. People are surrounded by this strong smell for a long time, which is bound to be harmful to health; Even famous fragrant flowers such as daffodils and roses are uncomfortable to breathe these smells for a long time, especially when sleeping. If too many fragrant flowers are placed indoors and the fragrance is too strong, people's nerves will be excited, especially if they smell them for a long time in the bedroom, which will cause insomnia.

With the improvement of living standards, it has become a fashion for people to use green plants for indoor greening and decoration. 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 not only the leaves of plants absorb substances, but also the roots of plants and bacteria in the soil contribute to the removal of harmful substances. Zhou, an engineer in the Indoor Environmental Monitoring Center of China Decoration Association, believes that the following three kinds of plants that can absorb toxic chemicals are most suitable for indoor use: aloe, chlorophytum, Eupatorium odoratum, Eupatorium odoratum and Dendrocalamus japonicus, which are natural scavengers and 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% of formaldehyde contained in 1 m3 air. Ivy, cycad, chrysanthemum, kumquat, pomegranate, Scutellaria barbata, rose, camellia, pomegranate, Milan, daisy, Chimonanthus praecox and marigold can effectively remove 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 dust in the air.

As the weather gets warmer, plants that can repel mosquitoes have become the focus of attention. Mosquito net vanilla is such a plant. It is an aromatic geraniaceae plant, its genetic structure has been changed, and it has only been introduced from Australia in recent years. The plant is drought-tolerant, can grow and mature within half a year, can survive for 10-15 years after proper maintenance, and the shape of branches and leaves can be changed at will, so it has high ornamental value. Mosquito net vanilla gives off a fresh and elegant lemon fragrance, which has a good mosquito repellent effect indoors, but it has no toxic side effects on human body. The higher the temperature, the more fragrance it emits, and the better the mosquito repellent effect. According to the test, a pot of mosquito net vanilla with a crown width of more than 30 cm can drive away mosquitoes in a room with an area of more than 10 square meter. In addition, a plant called pyrethrum contains pyrethrins, which can also effectively repel mosquitoes.

Volatile oil produced by plants that can kill germs, such as rose, osmanthus, violet, jasmine, lemon, rose, carnation, lily of the valley, crape myrtle, etc. It has obvious bactericidal effect. Plants such as Lagerstroemia indica, Jasmine and Lemon can kill diphtheria, dysentery bacteria and other protobacteria within 5 minutes. The fragrance of roses, carnations, lilies of the valley, violets, roses, osmanthus fragrans and other plants has obvious inhibitory effect on the growth and reproduction of succulents such as cactus, such as mycobacterium tuberculosis, pneumococcus and staphylococcus, which are native to tropical arid areas. The stomata on their fleshy stems are closed during the day and opened at night, absorbing carbon dioxide and producing oxygen at the same time. Increase the concentration of negative ions in indoor air. Plants such as Hupilan, Huweilan, tequila, palm, kale, Sedum, Rooting and pineapple can also purify the air at night. Climbing plants such as Parthenocissus tricuspidata, grapes, morning glory, wisteria and roses can be planted around the house, so that they can climb along the wall or along the frame to form green trees, which can effectively reduce sunlight radiation and greatly reduce indoor temperature.

Experts believe that orchids and lilies should not be used to decorate these flowers and trees in the bedroom: their fragrance will make people excessively excited and lead to insomnia; Its rich fragrance will make some people feel chest tightness and discomfort, hold their breath and have difficulty breathing; Pine, cypress, flowers and trees: its aromatic smell has stimulating effect on human stomach, which not only affects appetite, but also may make pregnant women feel uncomfortable, disgusting and vomiting; Hydrangea: the particles it sends out will make people's skin allergic if they come into contact with people; Cordate telosma: At night, it will emit many particles that stimulate the sense of smell. If you smell it for too long, it will make people with high blood pressure and heart disease dizzy, depressed, uncomfortable and even worse. 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.

The correct placement of indoor plants can reduce the air pollution caused by indoor decoration, so many people buy them, but the placement of plants is not so simple. The arrangement of indoor plants can't be placed at will according to everyone's interests, and different plants have different arrangement methods and positions. The frequency of going in and out of the main entrance of the living room is very high every day, so it is best for plants not to block the action, and upright flowers should not hinder the line of sight. The living room is most suitable for receiving guests and family members, so it is not suitable to put tall plants in the middle, and the number of flower varieties should not be too much. Just use a few plants to decorate it. The living room and other rooms can be separated by plants, such as ivy and chlorophytum, to form green curtains, which look natural and elegant. Many people in the bedroom think that plants will absorb carbon dioxide and release oxygen, so putting more plants in the bedroom is good for the human body. This view is wrong. The photosynthesis of plants is completely inhibited at night, and plants only breathe, that is, absorb oxygen and exhale carbon dioxide. Too many plants in the bedroom are bound to compete with people for oxygen, which will cause harm to the human body over time. Therefore, it is best to put a small amount of small plants in the bedroom, such as aloe, asparagus, or lilies and daffodils. Don't hang plants. The study is a place for reading and working, so it is not advisable to choose too many plants to avoid disturbing the line of sight. It is a good choice to put a pot of evergreen on the desk. The bookshelf is suitable for hanging plants and can make the whole study look quiet and elegant. The temperature in the kitchen changes greatly, so it's best to choose ferns with strong practicability, or simply hang peppers and onions on the wall for decoration. The environment in the bathroom is damp and dark, which is suitable for ferns to survive. In order to prevent plants from being flooded, you can also choose to hang plants. The higher the position, the better.