Grain Rain is a perennial herb of Physalis of Solanaceae, which is often cultivated as an annual. Strong adaptability, cold and heat resistance, like cool and humid climate. Like sunshine. No matter what soil, especially those native to Asia, can grow normally in the temperature range of 3℃ ~ 42℃. In the open field cultivation in the cold area of northern China, although the aboveground part withered in winter, it germinated and grew in the next spring, planted once and harvested for many years. However, South America has poor wintering ability in cold regions, and most of them are cultivated as annual plants. There are many kinds of geese, and the common ones are the red geese introduced from Japan, also called red girls. Small fruit type, easy to cultivate, mostly used for ornamental cultivation. There is also a kind of Huanggu, alias foreign girl, with larger fruit shape and better taste and flavor than red girl, but it is difficult to cultivate.