4 min read
The olive tree has been cultivated around the Mediterranean for thousands of years.
Some groves still look much as they might have generations ago: mature trees standing widely apart, their trunks shaped by time. Others are much more modern, with carefully planned planting systems, irrigation, mechanical harvesting and technology helping growers manage hundreds or even thousands of trees.
Neither tells the whole story.
The way an olive tree is cultivated influences how the tree grows, how much fruit it produces and, ultimately, the characteristics of the oil that fruit can produce.
For us, this is where the story becomes interesting.
The traditional olive grove
Traditional olive cultivation is often associated with older, widely spaced trees growing in landscapes shaped by generations of farming.
Many traditional groves are rain-fed, meaning the trees rely largely on seasonal rainfall rather than regular irrigation. Trees may be planted at relatively low densities, giving them considerable space to develop. In some regions, the terrain itself makes mechanisation difficult, so pruning and harvesting remain partly or largely manual.
There is also enormous variation within the word traditional. A traditional grove is not necessarily untouched by modern agriculture. A grower may still use modern pruning tools, soil-management techniques or mechanical aids while maintaining an older planting system.
What remains distinctive is often the structure of the grove: mature trees, wider spacing and a cultivation system shaped around the landscape rather than designed primarily for maximum planting density and yield.
For centuries, this was simply how olives were grown.
Then cultivation began to change
As olive oil production developed, growers began looking for ways to make olive cultivation more efficient.
Modern olive cultivation can involve higher-density planting, carefully managed tree shapes, irrigation systems, fertilisation programmes and mechanical harvesting. In intensive and super-high-density systems, trees are planted much closer together and managed in hedgerow-like formations so that machinery can move efficiently through the grove.
The objective is different from that of many traditional groves: to increase productivity from a given area while making farming operations more efficient and predictable.
Modern cultivation can also bring greater control over water. Drip irrigation, for example, allows growers to deliver measured amounts of water directly to the trees rather than relying entirely on rainfall.
But more water does not automatically mean better olives.
Water availability can influence yield, fruit development and the composition of the resulting oil. Research has also found that irrigation can affect phenolic concentration, making the relationship between water and oil quality more complex than simply assuming that a well-watered tree will produce a better oil.
The tree, the climate, the soil, the cultivar and the timing all interact.
The role of the olive grower
Whether an olive tree stands in a centuries-old Greek grove or a modern high-density plantation, cultivation still comes down to understanding the tree.
Pruning influences the shape of the canopy and the balance between vegetative growth and fruit production.
Water management affects how the tree develops and how its fruit matures.
Soil management influences the environment in which the roots grow.
And harvest timing matters because the stage at which olives are picked can influence the composition and characteristics of the resulting oil.
Harvesting itself matters too. Olives are living fruit, and damage or delays between harvesting and processing can affect the quality and composition of the resulting oil.
Modern technology can make many of these processes more precise. Traditional knowledge can provide an equally important understanding of the land, the trees and the rhythm of the seasons.
The two do not have to be opposites.
Perhaps the most interesting approach is not traditional or modern, but an understanding of what each can teach us.
Because long before olive oil reaches the mill, its story has already begun in the grove.
Find out more
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