The common olive tree is a perennial evergreen emblematic of Mediterranean culture, recognized for its thick, gnarled, and often hollow trunk that acquires sculptural shapes with maturity. Its leaves are small, leathery, and lanceolate, with a characteristic grayish-green color on the upper surface and a bright silvery hue on the underside. This species is widely appreciated both for its aesthetic value in landscaping and for its enormous economic importance in the global production of olive oil and table olives.
Botanically, it belongs to the Oleaceae family and originates from the regions surrounding the Mediterranean Sea, as well as from parts of the Middle East and Africa. It is an extremely hardy and resilient plant, adapted to survive in poor, calcareous soils and under severe arid conditions. It possesses a very extensive and powerful root system that allows it to anchor firmly to the ground and extract moisture from deep layers, making it a natural survivor of warm climates.
Its cultivation dates back to classical antiquity, being a universal symbol of peace, glory, and wisdom in various civilizations. In the home garden, it is an excellent choice for xeriscaping due to its very low water requirement once established. The longevity of these trees is legendary, with thousand-year-old specimens still producing fruit today. Its maintenance is simple, mainly requiring formative pruning and a location that guarantees maximum possible sun exposure throughout the year.
Did you know?The olive tree is an extremely long-lived tree that can live for thousands of years; the greatest danger to its health is excessive water at the roots.
Care
- Watering
- Scarce, tolerates drought; once a week in summer, none in winter.
- Light
- Full direct sun, minimum 6 to 8 hours of exposure daily.
- Temperature
- Temperate climate; withstands frosts down to -10°C and extreme heat above 40°C.
- Soil
- Very well-drained, prefers calcareous, stony soils with little organic matter.
- Fertilizer
- Moderate organic or nitrogen fertilizer application only in spring and autumn.
- Pruning
- Prune lightly in late winter to open up the canopy center and improve interior air circulation and light penetration. Remove dead wood, crossing branches, and any vigorous suckers sprouting from the base of the trunk.
- Propagation
- Propagate by taking semi-hardwood cuttings in early summer and dipping them in rooting hormone before planting in a gritty medium. It can also be propagated from hardwood cuttings or rooted basal suckers in early spring.
Is common olive toxic to cats and dogs?
The ASPCA doesn't list this species. If your pet has chewed it and seems unwell, call your vet.
Common problems
- Root rot
- Mealybugs and scale
- Fungal or bacterial leaf spots
- Too little light
- Overwatering
Gallery
Frequently asked questions
Why is my olive tree dropping leaves?
Leaf drop is most frequently caused by inadequate light or soggy, waterlogged soil that damages the roots. Indoors, low light combined with poor air circulation will cause the plant to shed foliage rapidly to conserve energy. Move the tree to a sunny location and let the soil dry out thoroughly between waterings.
How often should I water a potted olive tree?
Check the moisture depth with a wooden dowel; water only when the substrate is completely dry to the bottom. During summer, this typically means soaking the container once a week, while in winter once every two to three weeks is plenty. Always empty excess runoff from drainage saucers immediately.
Can an olive tree grow indoors successfully?
Yes, but only if it receives extensive direct sunlight from an unobstructed south-facing window. Ensure good ventilation and keep the plant away from central heating vents, which can dry out the canopy and promote pest infestations.
Why are the leaves turning yellow?
Occasional yellowing on the oldest inner leaves is simply part of the natural leaf shedding cycle. However, widespread yellow foliage usually indicates poor drainage or overwatering, so inspect the roots and reduce watering frequency.
Growing common olive at home?
Take a photo and we'll tell you how it's doing and what it needs.