Evergreen (scientific name: Rohdea japonica (Thunb.) Roth) is a perennial evergreen plant belonging to evergreen genus of asparagus family. It has the ability to purify space. Evergreen is famous for its unique air purification ability, which can remove nicotine, formaldehyde and other harmful substances. Evergreen is usually placed in the living room or bedroom to play the role of decoration and appreciation, which is refreshing. In addition, evergreen can also absorb indoor toxic gas and waste gas, release oxygen and purify the indoor air, especially for the elderly with weak immunity. Beautify the home. It is a kind of flowers with broad and green leaves, so it is a kind of beautiful green berry. Ye Zi is elegant and beautiful. It is often placed on the table in the study and hall or under the long picture of books and paintings. Red fruits add color in autumn and winter. Evergreen is suitable for decorating the living room and study. Decorative application: young plants and small potted plants can be placed on the desk and windowsill for viewing. Medium sized potted plants can be placed in the corner of the living room and the edge of the sofa as decoration, making the room full of natural vitality.