Prunes come from varieties of European plum trees that are freestone, meaning the pit is easier to remove while fresh plums tend to be clingstone. ... Almost 99 percent of the American crop of prunes comes from Pellier's French plum tree which was originally grafted to an American plum tree.

What plant does a prune come from?

A prune is a dried plum, most commonly from the European plum (Prunus domestica). Not all plum species or varieties can be dried into prunes. A prune is the firm-fleshed fruit (plum) of Prunus domestica varieties that have a high soluble solids content, and does not ferment during drying.

What fruit is a prune before it's dried?

Prunes are basically plums that have been dried naturally in the sun without undergoing any fermentation process. “Over my career, I have tested numerous fruits, including figs, dates, strawberries and raisins, and none of them come anywhere close to having the effect on bone density that dried plums or prunes have.