What is plum and what are the health benefits of plums? A plum is a kind of red color of juicy fruit. It is really beneficial for health. There are many kinds sources of vitamin C, A, B2, dietary fiber and potassium which are very important for our body. There are over 2000 varieties of plums which have been categorized into six styles of language as Damson, American, Japanese, European, Ornamental, and wild. The shape of this fruit is round, but there are some too which are oval. For the colors, that are various, as red, green, blue-black, purple, yellow, etc. The flesh can be some colors such as orange, green, and yellow.