Part I: Citrus and the Ancient World
World Civ. | From Sacred Fruit to Imperial Curiosity
The story of citrus begins in geography. Long before the fruit acquired its ceremonial, medicinal, and commercial meanings, its origins lay in the humid borderlands of northeastern India and northern Southeast Asia — a region stretching from Assam through Myanmar and into the Yunnan province near the eastern foothills of the Himalayas. There, more than 4,000 years ago, citrus likely began the long process of domestication.
Archaeology offers scattered but suggestive evidence of its early movement. In Nippur, south of ancient Babylonia, archaeologists discovered seeds dating to the Sumerian period around 2000 BCE. This is among the earliest indications that the fruit had already begun to travel beyond its original ecological home. The ancient world, often imagined as static, was in fact threaded by migration and exchange. Plants moved along the same paths as armies, merchants, and pilgrims.
Further west, the archaeological site of Hala Sultan Tekke in Cyprus reveals another stage in this gradual diffusion. Seeds resembling citrus appear there between 1101 and 1200 BCE. Although the precise species cannot be identified, their presence demonstrates that citrus — once confined to the eastern edges of Asia — had begun its quiet journey into the Mediterranean world.
By the eighth century BC, the fruit entered written memory. Chinese and Sanskrit sources from roughly 776–800 BC provide textual evidence of citrus. Yet written testimony almost always arrives after the fact. By the time chroniclers describe a fruit, it has already traveled, been planted, harvested, and integrated into local traditions. Citrus was no exception.
Indeed, by the time of the Hebrew Bible, citron had already assumed ritual meaning within Jewish tradition. In Leviticus 23:40, the Feast of Tabernacles — Sukkot — requires the faithful to gather four species of plants:
“And ye shall take you on the first day the fruit of goodly trees, branches of palm trees, and the boughs of thick trees, and willows of the brook; and ye shall rejoice before the Lord your God seven days.”
The phrase “fruit of goodly trees” derives from the Hebrew expression pri etz hadar. The word “hadar” carries a double meaning — referring both to citrus and to “glory” or “grandeur.” Such layered meanings were typical of the poetry and prophecy of the Hebrew Bible. The Septuagint, the Greek translation of the Old Testament produced in the third century BCE, rendered the phrase as a “grand and delightful fruit,” reinforcing the association between citron and sacred beauty.
The fruit also appeared in moments of political conflict. During the reign of Alexander Jannaeus, the second king of the Hasmonean Dynasty who ruled Judea from 103 to 76 BC, citrus fruit briefly became an instrument of protest. Jannaeus expanded his kingdom while presiding over civil war and deep internal divisions. According to the first-century Romano-Jewish historian Flavius Josephus, when the king violated a ritual during the Temple libation ceremony, the crowd threw citrus fruit at him.
What began as outrage eventually entered tradition. Jewish legal writings of Chazal later recorded precise specifications for the fruit used during the Feast of Tabernacles: the citron had to be fresh. Its skin: unblemished. The stigma and style intact — and at least the base of the stalk attached to the fruit. Ritual precision thus preserved the plant's physical integrity while ensuring its continued cultivation among Jewish communities throughout the Mediterranean diaspora.
Coins from later Jewish revolts testify to the fruit’s symbolic importance. During the Great Jewish Revolt against Rome (AD 66–73), a coin minted in the fourth year of the uprising displayed a palm branch accompanied by two citrons. The Bar Kokhba Revolt (AD 132–136) produced coins depicting three of the species used in the Feast of Tabernacles. Even in rebellion, the imagery of citrus endured as a sign of identity and continuity.
Yet religion alone did not move citrus across continents. Infrastructure — the quiet machinery of empire — carried the fruit westward.
Before the Silk Road reached its height, the Persian Empire had already constructed the Royal Road under Darius I around 522 BC. Stretching roughly 1,600 miles from Susa in modern Iran to Sardis in western Anatolia, the route connected the heart of Persia to the Mediterranean world. A journey that required ninety days on foot could be completed in nine days by mounted courier. The road wound through Anatolia, passed the Cilician Gates, and linked major centers such as Nineveh and Babylon. Along such arteries traveled not only messages and soldiers but seeds, saplings, and agricultural knowledge.
The Silk Road would later extend these connections even further. Under the Han Dynasty (206 BC – AD 220), Chinese imperial policy turned westward. In 138 BC, Emperor Wu dispatched the envoy Zhang Qian to establish contact with Central Asian cultures. The mission opened diplomatic and commercial corridors between China and lands far beyond its traditional sphere. Through these networks passed textiles, spices, animals, ideas — and plants.
Alexander the Great stands at the intersection of these expanding worlds. As his armies marched east in the fourth century BCE, they encountered landscapes where citrus trees were already known. Alexander traveled with botanists, and Greek scholars later recorded their observations. Among them was Theophrastus — often called the father of botany — who described the citron in his work Enquiry into Plants around 310 BC.
The fruit appeared to Greek observers as something both familiar and strange:
“And generally the regions of the East and South seem to produce plants of a peculiar kind, just as they produce animals of a peculiar kind. For example, in Media and Persia there is, among other plants, the tree called the ‘Median’ or ‘Persian apple.’
The leaf of this tree is like that of the arbutus, being almost identical with it, but the tree has thorns like those of the pear or the hawthorn — these are smooth, very sharp, and strong.
The fruit is not eaten, but it is exceedingly fragrant, and the leaves of the tree are also fragrant. If the fruit is placed among clothes, it keeps them from being eaten by moths.
It is also useful against deadly poisons — for if one who has taken poison drinks the fruit prepared in wine, it causes vomiting and brings up the poison.”
To Greek readers, the citron became the “Median apple,” a botanical curiosity associated with Persia and Media. The fruit’s fragrance, medicinal qualities, and rarity ensured that it would be remembered even where it could not easily be cultivated.
Alexander’s campaigns carried more than soldiers across Asia. They transported symbols and stories. Greek biographer Philostratus later described a shrine encountered by Alexander in India — a temple the Macedonians believed belonged to Dionysus but which in reality honored the Hindu god Skanda:
“The mountain on which Nysa stood was covered to the very top by beautiful plantations, divided by neat pathways. When they ascended it they found a temple dedicated to Dionysus. Here there was a polished, white stone statue of the god, in the form of a youth, seated at the heart of a grove of sacred trees and vines. These trees had grown together to form a roof above the god which protected it from the rain.”
The confusion between Dionysus and Skanda reveals Alexander’s broader political imagination. Across the lands he conquered, he translated foreign gods into Greek forms. To Europeans, he could be Hercules, son of Zeus — to Egyptians, Horus, son of Ammon — in Persia, Mithra — and in India, Skanda, son of Shiva. Such acts of cultural translation paralleled the botanical exchange occurring along the same routes.
By the time the Roman world encountered citrus, the fruit had already accumulated centuries of movement and meaning. Roman poet Virgil referred to citron shortly before 37 BC as the “Median apple,” echoing the earlier Greek descriptions. Romans also attributed medicinal virtues to the fruit, claiming it could counteract poison and produce fragrant oils.
Archaeological discoveries confirm that citrus had reached the heart of Roman life. In the Forum Romanum, researchers recovered thirteen seeds and a fragment of citrus skin dating to the early imperial period. Archaeobotanist Dafna Langgut notes that citron and lemon were the first citrus fruits to arrive in the Mediterranean basin. Their rarity transformed them into luxury objects among Rome’s elite.
Pliny the Elder, writing in his encyclopedic Natural History between AD 77 and 79, catalogued the fruit under several names — malus Assyria, Malus medica, and citrus. Pliny praised its medicinal uses, described its fragrance, and repeated the belief that it protected clothing from moths. Yet he also noted the difficulty of cultivating the plant. Imported in clay containers with breathing holes for the roots, it seemed to resist transplantation, thriving most reliably in the lands of Media and Persia, where it had first impressed Greek observers centuries earlier.
Thus, by the first century of the AD, citrus stood at the intersection of ritual, medicine, curiosity, and prestige. It had traveled from Himalayan foothills to Mesopotamian cities, from Jewish temples to Persian roads, from Greek botanical texts to Roman luxury. What began as a regional plant had become an artifact of civilization itself — carried wherever trade, conquest, and belief intertwined.
Bibliography | Notes
García-Lor, Andrés, Federico Curk, Patrick Ollitrault, Manuel Luro, and Luis Navarro. “The Citrus Route Revealed: From Southeast Asia into the Mediterranean.” HortScience 52, no. 6 (June 2017): 814–822. https://doi.org/10.21273/HORTSCI11023-16.
Theophrastus. Enquiry into Plants. Translated by Arthur Hort. Cambridge, MA: Harvard University Press (Loeb Classical Library), 1916.
Pliny the Elder. Natural History. Translated by H. Rackham. Cambridge, MA: Harvard University Press (Loeb Classical Library), 1945.
Hebrew Bible. Leviticus 23:40.
Josephus, Flavius. Accounts of the reign of Alexander Jannaeus.
Philostratus. Description of Alexander’s encounter with the shrine of Skanda.