We are deeply indebted to the Hong Kong Herbarium of Agriculture, Fisheries and Conservation Department, the Government of the Hong Kong Special Administrative Region for proofreading plant identification descriptions and photos, and their assistance in locating the poisonous plants throughout the years. We would also like to thank Professor Chiu Siu Wai for her help in the identification of mushrooms. Finally, we thank the Hong Kong Museum of Medical Sciences for facilitating us in taking plant photos in the herbal garden.