Orange tree

Also known as: Orange, Sweet Orange, Navel Orange

Citrus sinensis, commonly known as the sweet orange tree, is an evergreen tree with a rounded crown and glossy, dark green, oval-shaped leaves. It produces fragrant white blossoms in spring, followed by bright orange, juicy fruits that ripen in autumn to winter. Typically reaching 2–4 metres in cultivation, it is valued both as a fruit-bearing plant and an ornamental with glossy foliage.

Orange tree

Scientific classification

Species
Orange tree (Citrus sinensis)
Genus
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Family
Rutaceae
Non-toxic to humans and pets.
Toxicity
Tree · Fruit Edible
Plant type
2 - 4 metres
Height
1.5 - 3 metres
Spread
Evergreen
Foliage
Upright
Habit
Spring · Summer · Autumn
Season of interest
Full sun
Sunlight
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Ideal temperature

Orange tree pictures

Orange tree

Distribution of Orange tree

Distribution map

Southeast Asia and southern China

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Culture

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Toxicity

Non-toxic to humans and pets.

Quick identification of Orange tree

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Orange tree care guide

Water regularly, allowing soil to dry slightly between waterings
Watering
Full sun
Sunlight
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Ideal temperature

Watering

Water regularly, allowing soil to dry slightly between waterings

Fertilizing

Every 2–4 weeks during growing season (spring to summer)

Pruning

Prune in late winter to remove dead, diseased or crossing branches, and to maintain an open, balanced shape.

Propagation

Propagate by semi-ripe cuttings in summer, or by grafting onto suitable rootstocks (e.g., Poncirus trifoliata). Seed can be used but seedlings vary and take longer to fruit.

Growing

Plant in full sun in a sheltered, frost-free location with well-drained, loamy or sandy soil. Water regularly during the growing season, allowing the top few centimetres of soil to dry between waterings. Apply a balanced citrus fertiliser every 2–4 weeks from spring to late summer. In colder climates, grow in containers and overwinter indoors or in a greenhouse, as the tree is not fully hardy.

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Common pests and diseases

Diseases

Susceptible to root rot in poorly drained soil, citrus canker, and leaf spot. Good air circulation helps reduce fungal diseases.

Pests

Common pests include aphids, scale insects, mealybugs, and citrus leaf miner. Monitor regularly and treat with horticultural oil if needed.

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