The Washington Navel orange has existed in the Mediterranean basin for ages, as shown by writings dating back to 1646. Imported to Italy most likely from Portugal or Spain, it reached Sicily only in 1933. The name Washington comes from the town where the fruit, coming from Brazil, was studied for the first time, at the beginning of the IX century. The name Navel (from English) originates from the small and rudimentary secondary fruit, embedded at the top of the primary one.

The flesh of this fruit is blond, seedless (the fruit is called "apirene") and its flavour is delicious. It is medium sized, weighs 200 grams and contains over 100 ml of Vitamin C, namely the equivalent of the daily food requirements per person.

It is usually available in March.