Top 10 Best Fertilisers for Citrus Trees 2026: Complete Guide
What is the best fertiliser for citrus trees in 2026? Our expert selection
Citrus trees (lemon, orange, mandarin and grapefruit trees) are demanding plants that need specific nutrition to produce tasty fruit and glossy foliage. A good citrus fertiliser must supply the essential nutrients while preventing common deficiencies such as chlorosis (yellowing leaves).
In this complete guide, we have selected the 10 best citrus fertilisers available in 2026, analysing their composition, effectiveness, value for money and ease of use.
Why do citrus trees need a specific fertiliser?
Citrus trees have particular nutritional needs:
- 🍋 Nitrogen (N): for vigorous growth and dark green foliage
- 🍊 Phosphorus (P): for root development and flowering
- 🍋 Potassium (K): for fruit quality and flavour
- 🌿 Iron (Fe): essential to avoid iron chlorosis (yellow leaves with green veins)
- 💚 Magnesium (Mg): for photosynthesis and chlorophyll production
- ✨ Zinc (Zn): for the growth of new shoots
A special citrus fertiliser contains these elements in the ideal proportions and prevents common deficiencies.
Top 10 Best Citrus Fertilisers 2026
1. 🥇 Mediterranean Plant Fertiliser 500ml - Jungle Feed (Our No. 1 Choice)
Price: €14.90 | Size: 500ml concentrate | Type: Natural liquid
Why it is our No. 1 choice:
- ✅ Suitable for organic farming: 100% natural formula with no synthetic chemicals
- ✅ Complete formula: rich in iron, magnesium and zinc to prevent all deficiencies
- ✅ Fast action: concentrated liquid fertiliser that works from the first application
- ✅ Versatile: perfect for citrus, olive trees, palm trees, laurels, fig trees and bougainvilleas
- ✅ Prevents chlorosis: high iron content for glossy dark green leaves
- ✅ Promotes fruiting: balanced formula for abundant, tasty fruit
- ✅ Strengthens defences: improves resistance to disease and stress
Directions: Dilute 5ml per litre of water, apply every 2 weeks from March to September.
Our expert opinion: This fertiliser offers the best value for money on the market. Its complete natural formula suits citrus trees in pots and in the ground alike. Results are visible within 2-3 weeks: greener foliage, vigorous growth and abundant flowering.
👉 Discover our Mediterranean Plant Fertiliser (€14.90)
2. Slow-Release Granular Citrus Fertiliser
Type: Granules | Duration of action: 3-6 months
Advantages:
- ✅ Gradual release of nutrients
- ✅ Simple application: 1 to 2 times a year
- ✅ Ideal for citrus trees in the ground
Disadvantages:
- ❌ Slower action than liquid fertilisers
- ❌ Less precise for quickly correcting a deficiency
3. Special Citrus Liquid Fertiliser NPK 7-3-6
Type: Concentrated liquid | NPK ratio: 7-3-6
Advantages:
- ✅ Balanced ratio for growth and fruiting
- ✅ Fast absorption by the roots
- ✅ Easy to dose
Disadvantages:
- ❌ May lack trace elements (iron, magnesium)
- ❌ Requires regular applications
4. Manure-Based Organic Citrus Fertiliser
Type: Solid organic | Origin: Composted manure
Advantages:
- ✅ 100% natural and eco-friendly
- ✅ Improves soil structure
- ✅ Slow, gradual release
Disadvantages:
- ❌ Unpleasant smell
- ❌ Less suitable for potted citrus trees
- ❌ Slow action
5. Special Citrus Foliar Fertiliser
Type: Foliar spray | Application: On the leaves
Advantages:
- ✅ Ultra-fast absorption through the leaves
- ✅ Ideal for quickly correcting an iron deficiency
- ✅ Effective complement to root fertiliser
Disadvantages:
- ❌ Does not replace a complete root fertiliser
- ❌ Frequent applications needed
6. Universal Mediterranean Plant Fertiliser
Type: Liquid or granules | Versatility: Citrus, olive trees, laurels
Advantages:
- ✅ Versatile for all Mediterranean plants
- ✅ Economical if you have several types of plants
- ✅ Formula suited to chalky soils
Disadvantages:
- ❌ Less specific than 100% citrus fertilisers
7. Citrus Fertiliser Sticks
Type: Sticks to push into the soil | Duration: 2-3 months
Advantages:
- ✅ Very easy to use
- ✅ Gradual release
- ✅ Practical for beginners
Disadvantages:
- ❌ Uneven distribution of nutrients in the pot
- ❌ More expensive per kilo than other formats
8. Natural Soluble Powder Citrus Fertiliser
Type: Powder to dilute | Suitable for: organic farming
Advantages:
- ✅ 100% natural
- ✅ Very concentrated, economical
- ✅ Fast absorption
Disadvantages:
- ❌ Requires precise dosing
- ❌ Can clump with humidity
9. Citrus Fertiliser with Amino Acids
Type: Enriched liquid | Speciality: Growth stimulation
Advantages:
- ✅ Stimulates growth and resistance to stress
- ✅ Improves nutrient absorption
- ✅ Strengthens natural defences
Disadvantages:
- ❌ More expensive than standard fertilisers
- ❌ A supplement rather than a main fertiliser
10. All-in-One Citrus Fertiliser NPK + Trace Elements
Type: Complete liquid | Formula: NPK + Fe, Mg, Zn, Mn
Advantages:
- ✅ Complete formula with all the essential elements
- ✅ Prevents all deficiencies
- ✅ Practical: a single product is enough
Disadvantages:
- ❌ Price often high
- ❌ Quality varies by brand
How to choose the best fertiliser for your citrus trees?
1. Type of cultivation: pot or in the ground?
- Potted citrus trees: Favour liquid fertilisers such as our Jungle Feed Mediterranean Plant Fertiliser for precise control of nutrition
- Citrus trees in the ground: Slow-release granular fertilisers are more practical
2. Are there deficiencies?
- Yellow leaves with green veins: Iron deficiency → Choose an iron-rich fertiliser
- Generally pale green leaves: Nitrogen deficiency → Fertiliser with a high N in its NPK
- Small, few fruits: Potassium deficiency → K-rich fertiliser
3. Natural or conventional?
If you grow citrus trees to eat the fruit, favour a natural fertiliser suitable for organic farming such as our Jungle Feed formula.
4. Budget and frequency of application
- Liquid fertilisers: Application every 2 weeks, more work but precise control
- Granular fertilisers: 1-2 applications a year, less work but less precision
When and how to fertilise your citrus trees?
Fertilising period
- 🌿 March to September: Active growth period, regular fertilising
- ❄️ October to February: Winter dormancy, stop or greatly reduce fertilising
Frequency of application
- Liquid fertiliser: Every 2 weeks during the growing season
- Granular fertiliser: 1 application in spring, 1 in summer
- Organic fertiliser: 1 to 2 times a year (spring and autumn)
Application tips
- ✅ Always water before fertilising to avoid burning the roots
- ✅ Follow the stated doses (more is not better!)
- ✅ Alternate root fertiliser and foliar spray for maximum effectiveness
- ✅ Favour applications in the morning or late in the day
Signs that your citrus trees need fertiliser
- 🟡 Yellow leaves: Iron or nitrogen deficiency
- 🟢 Pale green leaves: Lack of nitrogen
- 🍋 Small or few fruits: Potassium or phosphorus deficiency
- 🍃 Premature leaf drop: Magnesium deficiency
- 🌱 Slowed growth: General lack of nutrients
- 🥀 Burnt leaf edges: Excess fertiliser or salts
FAQ - Frequently asked questions about citrus fertilisers
What is the best fertiliser for a potted lemon tree?
For a potted lemon tree, we recommend a natural liquid fertiliser such as our Jungle Feed Mediterranean Plant Fertiliser. It allows precise control of nutrition, prevents chlorosis thanks to its iron content, and promotes abundant fruiting.
When should you fertilise citrus trees?
Fertilise your citrus trees from March to September (active growth period). Stop or greatly reduce fertilising from October to February during winter dormancy.
How do you treat chlorosis in citrus trees?
Chlorosis (yellow leaves with green veins) is an iron deficiency. Use an iron-rich fertiliser and apply an iron chelate as a foliar spray for quick correction. Our Jungle Feed fertiliser contains iron to prevent this deficiency.
Can you use coffee grounds for citrus trees?
Yes, coffee grounds are beneficial for citrus trees because they slightly acidify the soil and provide nitrogen. However, they do not replace a complete fertiliser, as they lack phosphorus, potassium and trace elements.
What is the difference between liquid and granular fertiliser?
Liquid fertiliser: Fast action, immediate absorption, ideal for quickly correcting a deficiency or for potted plants. Application every 2 weeks.
Granular fertiliser: Slow, gradual release, less work (1-2 applications a year), better suited to citrus trees in the ground.
How many times a year should you fertilise an orange tree?
With a liquid fertiliser: every 2 weeks from March to September (about 12-14 applications).
With a granular fertiliser: 2 times a year (spring and summer).
Conclusion: Our expert recommendation
After analysing the 10 best citrus fertilisers on the market, our No. 1 choice is the Jungle Feed Mediterranean Plant Fertiliser 500ml for the following reasons:
- ✅ Complete natural formula: All the essential nutrients + trace elements (iron, magnesium, zinc)
- ✅ Fast, visible action: Results within 2-3 weeks
- ✅ Prevents chlorosis: Rich in iron for glossy dark green leaves
- ✅ Promotes fruiting: Abundant, tasty fruit
- ✅ Versatile: Perfect for all citrus trees and Mediterranean plants
- ✅ Excellent value for money: €14.90 for 500ml concentrate
- ✅ Easy to use: Simple dilution, application every 2 weeks
Whether you grow lemon, orange, mandarin or grapefruit trees, in pots or in the ground, this fertiliser guarantees you vigorous plants, glossy foliage and a generous harvest.
👉 Order your Mediterranean Plant Fertiliser now (€14.90)
Fast delivery in France. In stock. Formula suitable for organic farming.
Additional resources on citrus trees
- Citrus care: Watering, pruning, repotting, overwintering
- Citrus diseases: Mealybugs, aphids, sooty mould, gummosis
- Citrus varieties: Four-season lemon tree, orange tree, mandarin tree, kumquat
- Growing in pots: Choice of pot, substrate, drainage, exposure
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