What green plants give off oxygen at night?

Cactus (ball), palm palm, dwarf orchid (longevity flower), striped orchid, Sedum crassipes, cup-shaped rooting, cultivated pineapple, tiger orchid, tiger orchid, agave, aloe, air orchid (such as Phalaenopsis), and some ferns (such as bird's nest fern).

1, cactus (ball): It is a rumor that cactus can absorb radiation and increase oxygen. The cactus placed next to our computer is easy to die early, not because of radiation, but because the flower pots of cactus are generally made of plastic. In fact, this kind of flowerpot has poor air permeability and water permeability, while cactus is drought-resistant and water-resistant, so it dies quickly. Therefore, the cactus placed next to the computer has a short life, which has nothing to do with the computer, but there is a problem with the maintenance method.

2. Longevity flower: Christmas kale is native to Madagascar, Africa. I like a warm, slightly humid and sunny environment. Not cold-tolerant, the optimum growth temperature is 15-25℃. If the high temperature exceeds 30℃ in summer, the growth will be hindered, and the indoor temperature needs 12- 15℃ in winter. Below 5℃, the leaves turn red and the flowering period is delayed. In winter and spring, if the room temperature exceeds 24℃, flowering will be inhibited, and if the temperature is around 15℃, flowering will continue. Drought-tolerant, not strict with soil requirements, fertile sandy loam is better. Longevity flower is a short-day plant, which is sensitive to photoperiod response.

3, Hu Pilan: Hu Pilan is relatively cold-resistant, and it can still grow slowly in winter as long as the room temperature is not lower than 8 C. When the room temperature drops to about 3℃, the leaves will shrink due to freezing. Afraid of summer heat, the suitable temperature for growth is 20 ~ 28℃. Strong shade tolerance, can grow in the shade all the year round, afraid of sun exposure.

4. Aloe: Aloe barbadensis is one of the few edible species in the genus Aloe, and its products are widely used in food, beauty, health care, medicine and other fields. However, aloe vera is also toxic and should not be eaten by pregnant women and infants. Ordinary people should not eat more than 30 grams of aloe vera gel every day.

5, Phalaenopsis: Phalaenopsis was born in the tropical rain forest area, and it likes to be warm and cool. The optimum growth temperature is 15~20℃. If it is lower than 10℃ in winter, it will stop growing, and if it is lower than 5℃, it will die easily. Phalaenopsis originated in tropical Malaysia and is a perennial herb of Orchidaceae. The trees along the high temperature and high humidity river are the places where Phalaenopsis grows.

Extended data:

Advantages of green plants:

1, drug abuse can purify the air.

Some green plants can effectively absorb toxic chemicals produced by house decoration, such as chlorophytum, Eupatorium odoratum, Eupatorium odoratum, Dendrocalamus, etc., and their ability to absorb formaldehyde is particularly strong; However, snapdragon, morning glory and carnation can transform highly toxic sulfur dioxide into non-toxic or low-toxic sulfate compounds through oxidation; Cycas, chrysanthemum, pomegranate and camellia can effectively remove harmful substances such as sulfur dioxide, chlorine, carbon monoxide and nitrogen peroxide.

2, increase humidity without getting angry

Generally speaking, the indoor relative humidity should not be lower than 30%. Too low or too high humidity will have a negative impact on human health. Plant some indoor plants with high water demand, such as green radish, ivy, rhododendron and fern. It will increase the indoor humidity in a natural way and become a natural humidifier.

green plant

3. Natural vacuum cleaner

Studies have shown that orchids, taro and osmanthus fragrans are natural dust collectors, and the cilia on their plants can intercept and absorb suspended particles and smoke in the air. If there are enough plants indoors, the content of floating microorganisms and floating dust will be reduced.

4, sterilization and disinfection to protect health

Flowers and leaves of plants such as Lagerstroemia indica, Jasmine and Lemon can kill protobacteria such as diphtheria and Shigella dysenteriae within 5 minutes. The fragrance of Dianthus caryophyllus, Lily of the Valley, Violet, Rose and Osmanthus fragrans has obvious inhibitory effect on the growth and reproduction of Mycobacterium tuberculosis, Pneumococcus and Staphylococcus.

5, making oxygen and negative ions

Most plants release oxygen through photosynthesis during the day, especially cactus succulents. The stomata on their fleshy stems are closed during the day and opened at night, so they release carbon dioxide during the day and absorb carbon dioxide at night to release oxygen.

References:

Green Plants-Baidu Encyclopedia