Plants such as Rosa davurica, Rosa davurica and oleander contain carcinogens and carcinogenic viruses, and even the soil planted contains carcinogenic viruses. At present, 52 species of cancer-promoting plants have been identified. It is suggested that all friends who love flowers "clean their doors" as soon as possible and try not to plant carcinogenic plants at home.

Carcinogenic species: Lycopodium, Spartina alterniflora, Ficus microcarpa, Croton, Aristolochia mollissima, Croton, Kirin Crown, Bird-catching Grass, Euphorbia humifusa, Begonia, Spatholobus suberectus, Osmanthus fragrans, Cynanchum komarovii, Jatropha curcas, Red Coral, Sapium sebiferum and so on. Grifola frondosa, Tofu Chai, Forsythia suspensa, Belamcanda, Iris, Gynostemma pentaphyllum, Huang Lian, Jinguolan, Datura stramonium, Sparganum burmannii, Impatiens balsamina, scissors, hawthorn, kiwi fruit, Hainan fruit, bitter almond, Achyranthes bidentata, ebony, etc.