Olive

The olive tree is very old.

It has silvery green leaves. The trunk is often twisted.

Small white flowers grow on the tree. These flowers make the fruit. Most olives are used to make oil.

We can also eat the fruit. Some trees live for thousands of years. They are very strong trees.

The olive tree is a special evergreen tree.

It has silvery green leaves and a twisted trunk. These trees can live for thousands of years.

People have grown olives for a very long time. They may have started in the Levant area. This happened between 6,000 and 4,000 BC. Ancient people used the fruit for food. They also used it for many other things. They made oil from the fruit. This oil was used in lamps for light. People used it for soap and medicine too.

Most olives are made into oil. About 80% of all olives go to make oil. The other 20% are eaten as fruit. We call these "table olives."

The fruit is a drupe. A drupe is a fruit with a hard pit inside. This is like a peach or a cherry.

Many countries grow olives today. Spain, Italy, and Greece grow the most.

The olive tree is a special type of evergreen tree.

Its scientific name is Olea europaea. These trees are often short and squat. They rarely grow taller than 30 feet. However, some special trees in Italy grow much larger. The trunks are often gnarled and twisted. The leaves are a pretty silvery green color. They are shaped like long ovals. These trees are very tough and live a long time. Some can live for thousands of years.

Growing an olive is a very interesting thing that happens. First, small white flowers grow on the tree. These flowers have four yellowish white petals. The flowers grow slowly over several weeks. In hot weather, they bloom quite fast. After the flowers bloom, they turn into fruit. The fruit is called a drupe. A drupe is a fruit with a hard pit inside. This is just like a peach or a cherry.

People harvest the fruit while it is still green or purple. Most of the fruit is crushed to make oil. About 80% of all olives are made into oil. Only 20% are eaten as fruit. We call these "table olives."

Humans have a very long history with this tree. People likely began growing olives in the Levant area. This happened between 6,000 and 4,000 BC. Some evidence shows people used olives in Africa much earlier. The Phoenicians were famous sailors who helped spread the tree. They moved olives throughout the Mediterranean starting in the 16th century BC. They brought the trees to the Greek islands. By 3500 BC, olives had taken root in Crete. Later, they reached Iberia around 1050 BC.

Many different places grow olives today. Spain, Italy, and Greece are the biggest producers. Other major countries include Turkey, Tunisia, and Syria. They also grow in Morocco, Algeria, and Portugal. There are thousands of different types of olive trees. Some types are made just for oil. Other types are made just for eating. Some are even grown as small, pretty shrubs. These are called dwarf olives.

Olives have been useful to people for many reasons. In the past, the oil was used for lamp fuel. It was also used for soap and medicine. People even used the oil for personal grooming. The wood from the tree can be used for building. Because the trees are so strong, they are symbols of peace. The ancient Greeks thought the tree was sacred. They saw it as a symbol of wisdom and prosperity. Today, olives are still a main part of many meals. They are a very important part of life in the Mediterranean.

The olive, known scientifically as Olea europaea, is a subtropical evergreen tree. It belongs to the Oleaceae plant family, which also includes jasmine and lilac. The olive is a highly significant plant due to its economic and cultural history. It is one of the oldest fruit trees domesticated by humans. This species is the type species for its genus, Olea.

The tree is vital for producing both food and oil. This dual purpose has made it a cornerstone of Mediterranean life for millennia.

The life cycle of the olive begins with small, white flowers. These flowers grow in clusters called racemes from the leaf axils. Each flower has four yellowish-white petals fused at the bottom. The buds grow slowly over four to six weeks before blooming. In hot weather, they bloom in five to six days. In colder areas, the process can take up to two weeks. After pollination, the flower develops into a fruit called a drupe. A drupe is a fleshy fruit with a hard central stone, or pyrena.

This structure is very similar to a peach or a cherry.

There are many different types of olive trees and subspecies. The species Olea europaea has six natural subspecies distributed globally. One subspecies, O. e. subsp. europaea, is found throughout the Mediterranean Basin. It includes the wild 'silvestris' variety and the cultivated 'olivasters'. Other subspecies are found in Africa, such as O. e. subsp. maroccana in Morocco. There are also thousands of specific cultivars grown by farmers. A cultivar is a specific variety selected for certain traits. Some cultivars are grown specifically for oil production. Others are grown as "table olives" for direct consumption. Some are even grown as sterile ornamental shrubs called dwarf olives.

The history of the olive is deeply connected to human civilization. Fossil evidence suggests the genus originated 20 to 40 million years ago. Humans likely began cultivating the tree in the Levant between 6,000 and 4,000 BC. Archaeological finds in Israel show widespread use during the Early Bronze Age. The Phoenicians, who were expert mariners, helped spread the tree. They began disseminating olives throughout the Mediterranean in the 16th century BC. The tree reached Crete around 3500 BC and Iberia by 1050 BC.

This movement was driven by trade and human migration.

Olive production is a massive global industry with significant numbers. Approximately 80% of all harvested olives are processed into oil. Only about 20% are harvested to be eaten as fruit. In 2005, there were an estimated 865 million olive trees in the world. Today, the tree is grown in 66 different countries. Spain, Italy, and Greece are the leading commercial producers. Other major contributors include Turkey, Tunisia, Syria, Morocco, Algeria, and Portugal.

The scale of this production supports many global economies.

Beyond food, the olive tree has many surprising uses and symbolic meanings. The oil has been used for lamp fuel, soap making, and medicine. It is also used in cosmetics and as a lubricant. Even the wood is used for construction. Because olive trees can live for thousands of years, they are very resilient. This longevity has made them symbols of peace and wisdom. Ancient Greeks considered the tree sacred. They used branches in religious rituals and public ceremonies.

The olive tree connects biology, history, and global commerce. Its genetic history reflects the rise and fall of ancient empires. For example, the Romans set up massive industrial production facilities. They expanded cultivation into North Africa and Spain. The tree's success is largely due to human activity. This relationship has allowed the species to span 28.6 million acres. It remains a defining feature of local landscapes and traditions today.