The plum is a drupe fruit with a fleshy exterior surrounding a hard pit, within which the kernel is stored. Plum kernel oil is cold-pressed from these. Dried plums are called prunes, and the French call plums prunes, so plum kernel oil is sometimes referred to as prune kernel oil.

Plum trees are grown for culinary and ornamental purposes around the world. The second most cultivated fruit after apples, plums come in thousands of varieties, though only a few of these are commercially cultivated. The plum tree is important