Who are you calling a drupe? The plum, that’s who. A drupe is a fruit that has seeds surrounded by rock-like pits. That explains plums’ other classification: stone fruit.
Plums belong to the same family as peaches, nectarines, and apricots. But plums are much more diverse than their stone-fruit cousins. They can be large or small, with red, purple, green, yellow, or orange skin, and pink, yellow, or orange flesh.
They first grew in China thousands of years ago. Then plums made their way to Japan, parts of Europe, and America. Today, more than 2,000 varieties grow all over the world.