The environment of the dormitory determines that you can't raise large plants and it's not too expensive. After all, students focus on learning, spend too much energy fiddling with expensive flowers and trees, and it is easy to lose sight of one thing and miss the right business. Therefore, students should also bring small plants, single plants and popular ones. It is better to put them on the desk or hang them on the bedside, so that they can not only use space, decorate the environment, but also bring some vitality to their study and life. I think these little plants below are quite good. Poisonous weeds are resistant to heat and cold, drought and waterlogging. The requirement of temperature is not high, and it can tolerate low temperature below 0℃ in winter, and its growth is limited by high temperature above 30℃ in summer. The optimum growth temperature is between 10~20℃. Irrigation with clean water or rice washing water every 3-5 days. If the branches and leaves wither for lack of water, they will soon recover. Specially absorbs formaldehyde, radon, benzene, ammonia, sulfur dioxide, smoke, odor and carbon dioxide in indoor air. Quick release of negative ions, disinfection and sterilization.