植物虽然可以吸附甲醛，但植物的吸附能力有限，单独靠植物除甲醛并不现实。只能起到一个辅助的作用。植物进行的是光合作用，一般在白天吸入部分有害物质，而在夜晚不具备这个功能。人的生活规律一般都是白天室外，夜晚在室内，在人最需要空气净化时，植物没有办法起到相应的作用。
Although plants can absorb formaldehyde, but the adsorption capacity of plants is limited, it is not realistic to remove formaldehyde by plants alone. It can only play an auxiliary role. Photosynthesis is carried out by plants, which generally inhale some harmful substances during the day, but do not have this function at night. People's life rules are generally outdoor in the daytime and indoor at night. When people need air purification most, plants can't play a corresponding role.