Key dates
- Sixth–fifth millennia BCEVessels from Ein Zippori retain residues identified as olive oil.2
- c. 5000 BCEOlive wood at Tel Tsaf indicates cultivation beyond the tree’s natural habitat.1
- Around the mid-fifth millennium BCEFinds at Hishuley Carmel indicate table-olive preparation.3
- c. 4500 BCEPollen records suggest increasing olive cultivation in the southern Levant.5
- Fourth–third millennia BCEOlives and oil acquire increasing economic importance during the Early Bronze Age.8
Oil is not proof of an orchard
At Ein Zippori in Lower Galilee, organic residues in pottery indicate olive oil in vessels associated with the sixth and fifth millennia BCE. Researchers examined substances preserved within the ceramic material using chromatography and mass spectrometry. Such a discovery identifies a product that people processed or stored. By itself, it cannot establish whether the fruit grew on planted trees or was collected from naturally occurring stands. A community could develop sophisticated ways of using a plant before exercising sustained control over its reproduction.
Several settlements on the Carmel coast, including Kefar Samir, are now submerged. Their investigation reminds us that the distribution of excavated sites is not a complete map of the ancient economy: changes in the coastline have removed some settlements from ordinary view. Wells, wood and plant remains help reconstruct how their inhabitants lived. It remains essential to separate collection, processing and consumption. An olive stone in a settlement demonstrates that fruit reached the site; it does not automatically locate the tree or identify the people who controlled access to it.212
Tel Tsaf: trees beyond their natural habitat
Charred olive wood was identified among the remains from Chalcolithic Tel Tsaf. The authors of the 2022 study emphasised the settlement’s position beyond the natural habitat of wild olive. Wood used in everyday activities therefore provides a strong argument for local planting. The settlement’s chronology spans approximately 5200–4700 BCE; around 5000 BCE is used here as a rounded reference point. The discovery documents a practice already present during that period, rather than measuring the first occasion on which somebody undertook it.
The reasoning deserves attention. Fruit can travel as food, so a single stone provides weak evidence for the location of a grove. Ordinary fuelwood was generally obtained closer to where it was consumed; the composition of the assemblage, the surrounding environment and the use of the material consequently matter. None of these observations constitutes a photograph of an orchard. Their agreement nevertheless makes a defensible interpretation possible. Agricultural archaeology frequently reconstructs vanished fields and trees in this way, reading waste and everyday material through several independent lines of evidence.16
A perennial crop changed the organisation of work
Foundational research on early fruit growing highlighted the importance of vegetative propagation. Reproducing a selected tree from part of the plant can retain a combination of characteristics that sowing its stone does not guarantee. For agricultural history, this distinction matters more than an abrupt division between “wild” and “domestic” fruit. Farmers could recognise useful trees, protect them and reproduce them without possessing the terminology of modern genetics. Specific grafting techniques should nevertheless not be attributed to every early site unless there is evidence that they were practised there.
A grove also extended the horizon of economic decisions. In a farming system based partly on trees, both neglect and careful tending can have consequences beyond a single season. Work on plantings must be combined with obtaining food in the meantime, and fruit must eventually be harvested and processed. This is an inference from the biology of the crop, not proof of a particular social system at Tel Tsaf. Olive remains cannot identify family, communal or elite ownership. They do, however, make the continuity of access to land and the organisation of labour between harvests meaningful historical questions.138
Two products: oil and table olives
Research at Hishuley Carmel, a site approximately 6500 years old, points to the preparation of substantial quantities of olives for eating. The interpretation combines the form of installations, the fragmentation of stones and the coastal setting. The researchers proposed debittering with water and salt, supported by experimental comparisons. This differs from the sequence of crushing fruit to obtain oil. A single species could therefore yield different products that required different equipment, skills and storage arrangements. The existence of one process should not be used as automatic evidence for the other.
Stone-shape analysis compares ancient fruit with modern reference collections. Identification cannot be reduced to a rule that a large stone represents a cultivated variety. Proportions, variation across the assemblage and the preservation of specimens all affect the interpretation. Morphometric work on Hishuley Carmel illustrates the complexity of the forms people used. Domestication consequently describes a process whose different features may become visible at different moments. Expanding production did not require every tree to acquire a uniform appearance that archaeologists could instantly distinguish from all wild or unmanaged populations.34
Pollen reveals a changing landscape
An individual settlement records the activities of a particular community, while lake sediments can preserve vegetation changes across a wider area. A rise in olive pollen is especially informative when it is not accompanied by a comparable increase in other Mediterranean trees. A comparative study published in 2019 combined this pattern with archaeological evidence and identified the southern Levant as an early region of larger-scale cultivation, around 6500 years before 1950. Pollen percentages nevertheless cannot be read as an inventory of hectares planted or quantities harvested.
Olive is wind-pollinated, and its pollen can travel beyond the boundaries of cultivation. Cereals and trees also leave signals of unequal visibility in sedimentary records. The percentage of olive pollen therefore cannot be directly equated with the share of oil in people’s diets, or compared mechanically with the importance of bread. A convincing history operates at two scales: traces of work inside settlements and changes in surrounding vegetation. Agreement strengthens an interpretation, but differences can be informative too, revealing movement of products, contrasting plant uses or uneven preservation of the evidence.58
Genetics complicates the search for a single beginning
Genetic comparisons reveal strong connections between cultivated olives and the eastern Mediterranean, alongside contributions from local populations to their later diversification. The study by Díez and colleagues distinguished several gene pools and highlighted mixing between cultivated and wild forms. Debate over the number of domestication centres cannot therefore be settled by placing a single dot on a map. Moving planting material, crossing trees and selecting useful offspring could take place over long periods in different communities, leaving overlapping rather than neatly separated histories.
Trees growing today without obvious human care create another difficulty. They may represent wild populations, descendants of cultivated plants or remnants of an abandoned grove. Fieldwork and genetic research published in 2016 demonstrated that superficially similar stands can embody different histories. The present appearance of a landscape cannot be projected straight back into prehistory. The earliest documented planting, the genetic ancestry of a modern cultivar and the species’ natural distribution are three distinct research questions. Treating them separately helps explain why archaeological and genetic reconstructions sometimes appear to point in different directions.710
Exchange and the survival of practical knowledge
Tel Tsaf participated in long-distance contacts. Research on olivine beads demonstrated movements of materials whose possible origins were investigated geochemically. These objects are not direct evidence for olive-oil exports; they establish the broader setting of exchange in which the community operated. The distinction prevents the tempting assumption that every imported object must have been purchased with the output of a local grove. Demonstrating a particular trade in oil requires suitable product residues, containers and archaeological contexts, not simply evidence that a settlement accumulated unusual objects or wealth.
Horticultural knowledge can also outlast an individual building. Analyses of rootstocks and crowns in old Levantine olive trees found genetic differences consistent with grafting, as well as the repeated propagation of particular lineages. The living trees investigated are not surviving orchards from the fifth millennium BCE. Instead, they show how the results of later agricultural work can be read: selected characteristics were transmitted by reproducing plants, not solely by writing instructions. Agricultural history consequently includes a biological archive alongside excavated objects, one that must be interpreted with equal care about chronology and representativeness.119
Reading dates and assessing the transformation
Dates expressed as cal. BP refer to calibrated years before the conventional baseline of 1950. Around 7000 cal. BP therefore corresponds approximately to the beginning of the fifth millennium BCE, rather than seven thousand years counted backwards from the present day. A sample’s age must also be distinguished from the publication date of its analysis. Findings published in 2022 concern prehistoric farming; they do not establish that nobody cultivated olives earlier. Each new, securely contextualised sample can move the boundary of what researchers are able to demonstrate.
The central transformation was the enduring association of cultivation with a place, selected plant material and care across many seasons. It was an enlargement of farming’s repertoire rather than a straightforward replacement of grain fields by orchards. Read together, vessel chemistry, wood anatomy, stone morphology, pollen and genetics reveal both the significance of the change and the limits of present knowledge. Olive groves deserve their own place in agricultural history because they document production in which the lifespan of a tree, and the succession of people tending it, became important units of planning.1613
Questions and answers
Does the earliest olive oil demonstrate domestication?
No. Oil can also be obtained from wild fruit. Evidence for a product must be distinguished from evidence for planting and biological change in the crop.23
Why is Tel Tsaf important?
Charred olive wood occurs at a settlement beyond the wild olive’s natural habitat. Together with its context, this provides a strong case for cultivation around 5000 BCE.1
Sources
- Dafna Langgut; Yosef Garfinkel (2022). 7000-year-old evidence of fruit tree cultivation in the Jordan Valley, Israel
- Dvory Namdar; Alon Amrani; Nimrod Getzov; Ianir Milevski (2015). Olive oil storage during the fifth and sixth millennia BC at Ein Zippori, Northern Israel
- Ehud Galili and colleagues (2021). Early production of table olives at a mid-7th millennium BP submerged site off the Carmel coast (Israel)
- Jean-Frédéric Terral and colleagues (2021). The Shape Diversity of Olive Stones Resulting from Domestication and Diversification Unveils Traits of the Oldest Known 6500-Years-Old Table Olives from Hishuley Carmel Site (Israel)
- Dafna Langgut and colleagues (2019). The origin and spread of olive cultivation in the Mediterranean Basin: The fossil pollen evidence
- Guillaume Besnard; Jean-Frédéric Terral; Amandine Cornille (2018). On the origins and domestication of the olive
- Carlos M. Díez and colleagues (2015). Olive domestication and diversification in the Mediterranean Basin
- Oz Barazani; Arnon Dag; Zachary Dunseth (2023). The history of olive cultivation in the southern Levant
- Oz Barazani and colleagues (2014). A comparative analysis of genetic variation in rootstocks and scions of old olive trees – a window into the history of olive cultivation practices and past genetic variation
- Oz Barazani and colleagues (2016). Genetic variation of naturally growing olive trees in Israel: from abandoned groves to feral and wild?
- Danny Rosenberg and colleagues (2022). Long-distance trade in the Middle Chalcolithic of the southern Levant: The case of the olivine beads from Tel Tsaf, Jordan Valley, Israel
- Ehud Galili; Deborah Cvikel; Jonathan Benjamin; John McCarthy / Israel Antiquities Authority (2016). Haifa, Kefar Samir (Dado Beach): preliminary excavation report
- Daniel Zohary; Pinhas Spiegel-Roy (1975). Beginnings of Fruit Growing in the Old World
Approximate dates (c.) describe the nature of the evidence: archaeology dates settlements, layers and remains, not single moments of invention.