The Japanese red diamond guava tree can be groen in a pot to a height of about 6ft to 8ft feet tall and has oval or oblong leaves that are dark green in color. Japanese Red Diamond Guava is renowned for its exceptional flavor, combining sweetness with a hint of tartness.Red Diamond guava is often eaten fresh or used in desserts, juices, and jams. It is also a good source of vitamin C and dietary fiber. ????TASTE ??? The flesh is juicy and sweet, with a unique flavor that is often compared to a mix of pear, strawberry, and grapefruit.