Citrus (Orange, Lemon, Lime)
Citrus sinensis / C. limon / C. aurantifolia
About Citrus (Orange, Lemon, Lime)
Citrus is the world's most widely produced fruit group, with annual production exceeding 150 million tonnes. Oranges dominate (55%), followed by mandarins, lemons/limes, and grapefruit. Brazil is the largest orange producer; China leads in mandarin production. Citrus is rich in vitamin C, folate, and flavonoids. The citrus industry faces existential threats from Huanglongbing (citrus greening) and citrus canker. In Africa, citrus production is important in South Africa, Egypt, Morocco, and increasingly in East Africa. Citrus trees are long-lived (25-50+ years) and can produce fruit year-round in tropical regions.
Growing Conditions
Full sun — 8+ hours daily for optimal fruit quality and color development
900-1,200 mm annually. Regular irrigation essential during dry periods. Deficit irrigation before harvest improves fruit sweetness.
Well-drained sandy loam to loam. pH 6.0-7.0. Citrus is extremely sensitive to waterlogging.
Optimal 25-30°C. Some cold (10-15°C nights) needed for fruit coloring in temperate regions.
Moderate. High humidity promotes citrus canker and melanose.
Perennial — first commercial harvest 3-5 years after planting. Fruit matures 6-14 months after flowering depending on type.
Step-by-Step Growing Tips
Use certified HLB-free nursery trees budded on appropriate rootstock
Space at 6 × 6 m (standard) or 3 × 6 m (hedgerow/high density)
Manage Asian citrus psyllid aggressively and continuously
Apply micronutrients (Zn, Mn, Fe, B) as foliar sprays 3-4 times per year
Prune to maintain light penetration and spray coverage in the canopy interior
Do NOT prune during psyllid flush seasons — new growth attracts psyllids
Disease Risks to Watch
All diseases →Citrus canker (Xanthomonas citri) causes raised, rough, crater-like lesions with yellow halos on citrus leaves, fruit, and twigs. Spread by wind-driven rain and contaminated tools. Manage with copper sprays during flush growth, windbreaks, tool sanitation, and resistant rootstocks. Canker-affected fruit is safe to eat but unmarketable.
Citrus greening (HLB) is caused by Candidatus Liberibacter asiaticus, spread by the Asian citrus psyllid. Symptoms include blotchy yellow mottling (asymmetric), lopsided small bitter fruit, and tree decline over 3-5 years. There is no cure. Manage with psyllid control (imidacloprid, kaolin clay), removing infected trees, and using certified disease-free nursery stock.
Companion Planting
✅ Good Companions
Growing Zones
Frequently Asked Questions
When is the best time to plant Citrus (Orange, Lemon, Lime)?
Perennial — first commercial harvest 3-5 years after planting. Fruit matures 6-14 months after flowering depending on type.
What soil does Citrus (Orange, Lemon, Lime) need?
Well-drained sandy loam to loam. pH 6.0-7.0. Citrus is extremely sensitive to waterlogging.
How much water does Citrus (Orange, Lemon, Lime) need?
900-1,200 mm annually. Regular irrigation essential during dry periods. Deficit irrigation before harvest improves fruit sweetness.
What are the most common diseases affecting Citrus (Orange, Lemon, Lime)?
The most common diseases are: citrus canker, citrus greening. Monitor regularly and practice crop rotation.
What plants grow well with Citrus (Orange, Lemon, Lime)?
Good companions include: guava. Avoid planting near no specific plants.
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