Raising some flowers indoors can not only beautify the environment, but also absorb harmful gases such as formaldehyde and benzene and play the role of air purifier.

Chlorophytum has a strong ability to absorb formaldehyde, carbon monoxide, nitrogen peroxide and other toxic chemicals in the air.

Alias chlorophytum, Phragmites communis, perennial evergreen herbs of Liliaceae. It has cylindrical fleshy roots, basal leaves, linear lanceolate and width of 1 cm to 1.5 cm. Flower buds are extracted from leaf axils, forming creeping branches, hanging downwards, and many small plants with air roots will grow at the top and nodes. Racemes with small white flowers bloom from March to June. Common varieties are Phnom Penh, Golden Heart, Silver Edge, Silver Heart Chlorophytum and so on. Native to South Africa, it is active, adaptable, lush and easy to cultivate. I like warm and humid semi-cloudy environment, but I can't stand cold and heat. The suitable temperature is 65438 05℃ to 25℃, and it is higher than 65438 00℃ in winter. Propagation can be carried out in individual plants, or young plants can be directly cut from creeping branches and planted separately. Whole grass can be used as medicine.

Pittosporum absorbs photochemical smog and is dustproof and sound-proof.

Also known as Qilixiang, Pittosporum is an evergreen shrub or small tree. The height of potted plants varies from 0.5 m to 1.5 m. The leaves are leathery and shiny, with terminal umbels, flowering from April to June, and the flowers are white or greenish and fragrant. Sex likes warm and humid environment, sunshine and semi-shade tolerance. Always spray water on the leaves during the growth period, and the water should be dry and wet. Before and after flowering, a pancake should be fertilized with water. I like plenty of light, the wintering temperature is higher than 5℃, and watering is controlled when the room temperature is low in winter. Pittosporum has strong branching ability and is resistant to pruning, so it should be pruned from seedlings, topping to promote the development of lateral branches, and the crown is often pruned into a ball.

Aloe vera can reduce the pollution of benzene and formaldehyde and increase the concentration of negative oxygen ions. It can also be used for relieving inflammation and treating traumatic injury.

Perennial evergreen herbs of Liliaceae. Fleshy leaves alternate with cylindrical fleshy stems. There are many varieties, including arborvitae aloe, American aloe and China aloe. Racemes are extracted from leaves and grow upright, with small orange flowers with red spots. Like warm and humid climate conditions, not cold-resistant, and the room temperature in winter is not lower than 5℃. Not strict with soil requirements, drought and salt tolerance, like good drainage, fertile and loose sandy loam. I like sunshine, I don't like shade and shelter from the wind, or I often pick leaves, and I don't like flowering. In the vigorous growth period of spring, summer and autumn, the basin soil should always be moist, but no water can accumulate.