Olive definition from Wiki!
The olive — Olea europaea — is a small evergreen tree of the Oleaceae family, native to the eastern Mediterranean and cultivated for at least six thousand years. Nearly every olive and every drop of olive oil you have met comes from this single, remarkably tough and long-lived species.
For all the hundreds of named varieties in the world, the olive is botanically one species: Olea europaea, a small evergreen tree in the Oleaceae family, the same family as ash, lilac and jasmine. It is native to the eastern Mediterranean and the lands around it, and it has been in cultivation so long that its wild and domesticated forms have shaped one another for millennia. Understanding a few plain facts about the tree explains a great deal about why olives and their oil are the way they are.
The tree and its fruit
The olive is modest in size — usually a small tree or large shrub, with silvery grey-green leaves that are dark above and pale, almost scaly, beneath. It carries clouds of small creamy-white flowers, mostly on the previous year’s wood, and its fruit is botanically a drupe: a stone fruit, like a cherry or a plum, with a single hard pit at the centre. Wild olives bear small, thin-fleshed fruit; centuries of selection gave cultivated trees the plumper, oilier drupes we grow for the table and the mill.
Where it likes to live
The olive is a creature of the Mediterranean climate — hot dry summers, mild wet winters — and it shows a marked preference for limestone: it flourishes on calcareous slopes, stony crags and coastal ground where little else thrives. That toughness is central to its character. It endures drought, poor soil and heat that would kill softer crops, which is exactly why it became the backbone of agriculture across a dry, rocky region and, later, in Mediterranean-like climates around the world.
Built to last centuries
The olive’s most astonishing trait is longevity. Trees routinely live for hundreds of years, and the oldest are credibly reckoned to be well over a thousand — you can read more in the story of the oldest olive tree. The secret is the tree’s power to regenerate: cut it down or burn it, and it resprouts from the base and the root, so a single organism can persist for millennia while its visible trunk is replaced many times over. An olive grove is less a crop than an inheritance passed down the generations.
| Species | Olea europaea |
|---|---|
| Family | Oleaceae (ash, lilac, jasmine) |
| Habit | Small evergreen tree / large shrub |
| Leaves | Opposite, grey-green; pale beneath |
| Fruit | A drupe (stone fruit) |
| Native range | Eastern Mediterranean & nearby |
| Preferred soil | Calcareous — limestone slopes, crags |
| Longevity | Centuries; oldest over a millennium |
The botany in a nutshell
- One species, Olea europaea, lies behind every cultivated olive variety.
- The fruit is a drupe — a stone fruit — not a berry.
- The tree loves limestone soils and a Mediterranean climate, and shrugs off drought.
- Its power to resprout from the root lets a single tree live for many centuries.
The olive tree: common questions
What species is the olive?
Olea europaea, a small evergreen tree in the Oleaceae family — the same family as ash, lilac and jasmine. Every cultivated variety belongs to this one species.
Is an olive a fruit?
Yes — botanically it is a drupe, or stone fruit, like a cherry or plum, with a single hard pit at the centre.
Where did the olive originate?
In the eastern Mediterranean and neighbouring lands, where it has been cultivated for at least six thousand years and spread west across the region in antiquity.
What soil and climate suit olives?
A Mediterranean climate of hot dry summers and mild winters, and calcareous (limestone-rich) soils. The tree tolerates drought, heat and poor ground remarkably well.
How long do olive trees live?
Commonly for centuries, and the oldest are credibly over a thousand years old, because the tree can regenerate from its base and roots almost indefinitely.
Here is the thing worth holding on to behind all the botany: the olive’s whole personality comes from its toughness. One species, Olea europaea, evolved to survive drought, heat, thin limestone soil and even fire — and everything we love about it flows from that. The astringent fruit that must be cured before you can eat it, the oil rich in protective compounds, the trees that outlive the people who plant them and resprout from a burnt stump: these are all a survivor’s traits. When you eat an olive, you are tasting a plant built to endure what would finish almost anything else.
Standard botany of Olea europaea (Oleaceae): morphology, native range, ecology and longevity.