Fertilizers for Citrus Trees

Fertilizers for citrus plants are nutrients for lemons, oranges, kumquats, and other citrus grown in pots and greenhouses. In this category, you will find liquid mineral and organic concentrates that support the growth, flowering, and fruiting of citrus plants throughout the season. We have gathered products from renowned brands Growth Technology and Mairol, tailored to the needs of this demanding group of plants. We offer convenient shipping throughout the European Union.

The set includes five products in various sizes, so you can easily choose the fertilizer according to the number and size of your trees. If you are looking for universal preparations or for other species, visit the all fertilizers section, where you will find the full range of fertilizing products.

How to choose fertilizer for citrus? Mineral or organic

The choice of fertilizer for citrus mainly depends on the effect you want to achieve and how you manage your cultivation in pots or greenhouses. Mineral concentrates act quickly, precisely, and in an easily controllable way to replenish nutrient deficiencies, making them ideal during the intensive growth, flowering, and fruiting season. In this group, you will find Citrus Focus 300ml to start with, a larger and more economical package Citrus Focus 1L, and the proven German preparation Citrusenergie Mairol. Organic nutrients support the natural condition of the soil and plants, act more gently, improve soil fertility, and are a good choice for those who value cultivation close to natural conditions. Here we recommend the handy Organic Citrus Focus 300ml and the more efficient Organic Citrus Focus 1L. Tip: citrus plants have exceptionally high nutritional needs, so always adjust the dose to the size and age of the plant and the current season, significantly reducing it during winter dormancy when plants naturally slow their growth.

Mineral and organic — what you will find in this category

In this category, we have gathered both classic mineral fertilizers and organic nutrients so that every citrus grower can find a preparation suited to their cultivation method. Mineral concentrates provide a fast, measurable effect and a full set of macro- and microelements that citrus plants need during intensive growth, flowering, and fruiting phases.

Organic nutrients focus on gentle, long-term support of plants and soil condition. All products come as liquid concentrates that easily dissolve in watering water. You can find the full range of fertilizing products in the all fertilizers section.

How to use fertilizer for citrus

Dosage — dilute the liquid fertilizer in water according to the label instructions, adjusting the concentration to the size of the plant and the age of the tree.

Frequency — during the growing season, from spring to summer, fertilize intensively, usually every 1–2 weeks, when the plant develops leaves, flowers, and sets fruit.

Wintering in cool conditions — if the citrus winters at low temperatures and slows its growth, reduce or completely stop fertilizing until spring.

Caution — citrus plants are sensitive to iron deficiency, which shows as chlorosis (yellowing leaves with green veins). Never fertilize dry root balls — first lightly moisten the substrate to avoid root burn.

Frequently asked questions

How often should you fertilize a potted citrus?
During the growing season, from spring to summer, fertilize every 1–2 weeks, adjusting the dose to the size of the plant. Outside the season, significantly reduce the frequency.

Mineral or organic fertilizer for citrus?
Mineral fertilizer works quickly and precisely replenishes deficiencies, while organic fertilizer gently supports the plant and soil condition. The choice depends on your cultivation style — both solutions are effective.

Should you fertilize citrus in winter?
If the plant winters in cool conditions and slows growth, fertilizing should be reduced or stopped until spring. In a warm, bright room, light fertilizing is possible.

What to do about yellowing citrus leaves?
Yellowing leaves with green veins often indicate chlorosis caused by iron deficiency. Use a fertilizer containing microelements and ensure proper watering and soil pH.

Do you ship fertilizers throughout the EU?
Yes, we ship all citrus fertilizers throughout the European Union.

5 products

  • Citrus Focus 1L - nawóz do roślin cytrusowych

    Growth Technology Citrus Focus 1L - fertilizer for citrus plants

    Citrus Focus 1L – fertilizer for citrus trees Citrus Focus is a high-quality, concentrated liquid fertilizer designed for the care of all citrus tree species. The product has been developed with the specific needs of citrus plants in mind, which in both pot and ground cultivation require regular and precisely tailored feeding, especially during periods of intense growth, flowering, and fruiting. The fertilizer formula is based on carefully selected mineral salts, organic plant acids, and essential micronutrients. Citrus Focus provides nutrients in easily absorbable forms, supporting the even development of green parts, stable flowering, and proper fruit formation. Regular use helps maintain the good condition of plants throughout the growing season. The fertilizer is effective both for citrus trees grown in pots, where nutrient resources are limited, and in the ground. The presence of humin acid and fulvic acid supports soil fertility and improves water and mineral nutrient uptake, which is crucial for plants with high nutritional demands. Benefits of use supports intensive growth and flowering of citrus trees, promotes abundant fruiting, improves fruit quality and condition, contains humin and fulvic acids that support soil structure, easy to use and efficient concentrate. Dosage standard: 5 ml of fertilizer per 1 liter of water, apply once a week, during flowering: it is recommended to double the dose to support intensive fruiting. Fertilizer composition Analysis (%): Nitrogen (N): 2.34 nitrate nitrogen: 2.26 ammonium nitrogen: 0.08 Water-soluble phosphorus pentoxide (P2O5) (P): 1.22 (0.53) Potassium oxide (K2O) (K): 3.82 (3.17) Calcium oxide (CaO) (Ca): 1.54 (1.10) Copper (Cu) chelated with EDTA: 0.002 Iron (Fe) chelated with EDTA: 0.040 Manganese (Mn) chelated with EDTA: 0.010 Molybdenum (Mo): 0.001 Zinc (Zn) chelated with EDTA: 0.0025 Also contains: magnesium, sulfur, boron, cobalt, nickel, humin acid, fulvic acid. Safety and storage avoid contact with eyes, keep out of reach of children, protect from direct sunlight, store at temperatures between 6°C and 25°C. Capacity: 1 l Manufacturer: Growth Technology

    65,00 zł

  • Citrus Focus 300ml - nawóz do roślin cytrusowych

    Growth Technology Citrus Focus 300ml - fertilizer for citrus plants

    Citrus Focus 300 ml – fertilizer for citrus trees Citrus Focus is a high-quality, concentrated liquid fertilizer designed for the care of all types of citrus trees. The product has been developed with the specific needs of this group of plants in mind, which in both potted and ground cultivation require regular and precisely tailored feeding, especially during periods of intense growth, flowering, and fruiting. The fertilizer formula is based on carefully selected mineral salts, organic plant acids, and essential micronutrients. Citrus Focus provides nutrients in easily absorbable forms, supporting the even development of green parts, stable flowering, and proper fruit formation. Regular use helps maintain good plant condition and improves crop quality. The fertilizer is effective both for citrus trees grown in pots, where nutrient resources are limited, and in the ground. The presence of humic acid and fulvic acid supports soil fertility and facilitates the uptake of water and minerals, which is crucial for plants with high nutritional demands. Benefits of use supports intensive growth and flowering of citrus trees, promotes abundant fruiting, improves fruit quality and condition, contains humic and fulvic acids that support soil health, easy to use and efficient concentrate. Dosage standard: 5 ml of fertilizer per 1 liter of water, apply once a week, during flowering: it is recommended to double the dose to support abundant fruiting. Fertilizer composition Analysis (%): Nitrogen (N): 2.34 nitrate nitrogen: 2.26 ammonium nitrogen: 0.08 Water-soluble phosphorus pentoxide (P2O5) (P): 1.22 (0.53) Potassium oxide (K2O) (K): 3.82 (3.17) Calcium oxide (CaO) (Ca): 1.54 (1.10) EDTA-chelated copper (Cu): 0.002 EDTA-chelated iron (Fe): 0.040 EDTA-chelated manganese (Mn): 0.010 Molybdenum (Mo): 0.001 EDTA-chelated zinc (Zn): 0.0025 Also contains: magnesium, sulfur, boron, cobalt, nickel, humic acid, fulvic acid. Safety and storage avoid contact with eyes, keep out of reach of children, protect from direct sunlight, store at temperatures between 6°C and 25°C. Capacity: 300 mlManufacturer: Growth Technology

    36,00 zł

  • Organic Citrus Focus 300ml - organiczny nawóz do drzew cytrusowych

    Growth Technology Organic Citrus Focus 300ml - Organic Fertilizer for Citrus Trees

    Organic Citrus Focus – organic fertilizer for citrus plants Organic Citrus Focus is a 100% plant-based organic fertilizer concentrate, specially developed to meet the needs of citrus trees grown both in pots and in the ground. The product is based solely on natural ingredients, allowing for sustainable and environmentally safe fertilization. The formula is designed to support the harmonious development of leaves, roots, and fruits, while also improving the overall condition and resistance of the plants. Regular use of the fertilizer promotes steady growth, abundant flowering, and proper fruiting of citrus plants without overloading the substrate. The absence of synthetic additives makes the product well-suited for home greenhouses, conservatories, as well as balcony and terrace cultivation. Nutrients are released gradually, enabling plants to absorb them evenly throughout the growing season. Organic Citrus Focus combines macro- and micronutrients of plant origin with the addition of humic and fulvic acids and extract from Ascophyllum nodosum seaweed. This composition not only supplies nutrients but also positively affects the structure and microbiology of the substrate. Humic and fulvic acids improve the soil’s ability to retain nutrients, while the seaweed extract supports natural growth processes and plant resistance. The balanced NPK ratio, tailored to the needs of citrus plants, helps maintain intensely green leaves, a healthy root system, and proper flower and fruit development. The product is especially effective in potted cultivation, where substrate volume is limited and nutrient stability is crucial. Product Benefits 100% plant-based ingredients, balanced NPK ratio approx. 3:2:4 tailored for citrus plants, contains humic and fulvic acids and extract from Ascophyllum nodosum, supports natural plant resistance to environmental stress, effective in both potted and ground cultivation. Fertilizer Composition (NPK Analysis) Nitrogen (N): 3% Phosphorus (P₂O₅): 2% Potassium (K₂O): 4% Additionally, the fertilizer contains: extract from Ascophyllum nodosum seaweed, humic and fulvic acids, micronutrients including calcium, iron, and other trace elements. Dosage and Application shake the container well before use, dilute 5 ml of fertilizer in 1 liter of water, apply with every watering during the growing season, fertilize sporadically in winter depending on plant condition, water until excess flows out of the pot’s drainage holes. Usage and Safety The fertilizer is suitable for all citrus species such as lemons, limes, oranges, mandarins, grapefruits, and kumquats. It can be used in pots, containers, on balconies, terraces, in greenhouses, and conservatories year-round, with special attention during growth and fruiting periods. Store the product in a tightly closed container in a dry, cool place away from light and heat sources. Keep out of reach of children and pets. In case of skin contact, rinse with water; if ingested, seek medical advice. Volume: 300 mlManufacturer: Growth Technology

    39,00 zł

  • Organic Citrus Focus 1L - organiczny nawóz do drzew cytrusowych

    Growth Technology Organic Citrus Focus 1L - Organic Fertilizer for Citrus Trees

    Organic Citrus Focus – organic fertilizer for citrus plants Organic Citrus Focus is a 100% plant-based organic fertilizer concentrate, specially developed to meet the needs of citrus trees grown both in pots and in the ground. The product is based solely on natural ingredients, allowing for sustainable and environmentally safe fertilization. The formula is designed to support the harmonious development of leaves, roots, and fruits, while also improving the overall condition and resilience of the plants. Regular use of the fertilizer promotes steady growth, abundant flowering, and proper fruiting of citrus plants without overloading the soil. The absence of synthetic additives makes the product well-suited for home greenhouses, conservatories, as well as balcony and terrace cultivation. Nutrients are released gradually, enabling plants to absorb them evenly throughout the growing season. Organic Citrus Focus combines macro- and micronutrients of plant origin with the addition of humic and fulvic acids and extract from Ascophyllum nodosum seaweed. This composition not only supplies nutrients but also positively affects soil structure and microbiology. Humic and fulvic acids improve the soil’s ability to retain nutrients, while the seaweed extract supports natural growth processes and plant resistance. The balanced NPK ratio, tailored to citrus needs, helps maintain intensely green leaves, a healthy root system, and proper flower and fruit development. The product is especially effective in potted cultivation, where soil volume is limited and nutrient stability is crucial. Product Benefits 100% plant-based ingredients, balanced NPK ratio approx. 3:2:4 adapted for citrus plants, contains humic and fulvic acids and extract from Ascophyllum nodosum, supports natural plant resistance to environmental stress, effective for both potted and ground cultivation. Fertilizer Composition (NPK Analysis) Nitrogen (N): 3% Phosphorus (P₂O₅): 2% Potassium (K₂O): 4% Additionally, the fertilizer contains: extract from Ascophyllum nodosum seaweed, humic and fulvic acids, micronutrients including calcium, iron, and other trace elements. Dosage and Application shake the container well before use, dilute 5 ml of fertilizer in 1 liter of water, apply with every watering during the growing season, fertilize sporadically in winter depending on plant condition, water until excess flows out of the pot’s drainage holes. Usage and Safety The fertilizer is suitable for all citrus species such as lemons, limes, oranges, mandarins, grapefruits, and kumquats. It can be used in pots, containers, on balconies, terraces, in greenhouses, and conservatories year-round, with special attention during growth and fruiting periods. Store the product in a tightly closed container in a dry, cool place away from light and heat sources. Keep out of reach of children and pets. In case of skin contact, rinse with water; if ingested, seek medical advice. Volume: 1000 ml Manufacturer: Growth Technology

    68,00 zł

  • Citrusenergie 1L Mairol - nawóz do roślin cytrusowych

    Mairol Citrusenergie 1L Mairol - fertilizer for citrus plants

    Citrusenergie – liquid mineral fertilizer for citrus plants Citrusenergie by Mairol is a specialized liquid mineral fertilizer designed for the care of citrus plants such as lemons, oranges, mandarins, and kumquats. The product formula has been developed with the specific needs of this group of plants in mind, which are often grown in containers and require regular, precise nutrient supply. The fertilizer supports stable growth, proper leaf development, and the flowering and fruiting process during the growing season. Mairol Citrusenergie provides plants with a carefully balanced set of macro- and micronutrients tailored to their needs during periods of intensive growth and fruit formation. The liquid form of the fertilizer allows for even distribution of nutrients in the substrate and their rapid uptake by the root system. Regular use helps maintain good plant condition, healthy foliage, and stable vitality. Composition and importance of nutrients Nitrogen (N) 9% – in forms: ammonium (2.2%), urea (4.5%), and nitrate (2.2%); supports the development of green mass and overall plant growth. Phosphorus (P2O5) 3.5% – stimulates root system development and flowering. Potassium (K2O) 4% – affects plant resistance as well as fruit quality and development. Micronutrients – boron (0.02%), copper (0.005%), iron (0.11%), manganese (0.02%), molybdenum (0.001%), and zinc (0.002%) in EDTA-chelated forms, essential for proper metabolic processes. The use of micronutrients in chelated form allows for effective absorption even under conditions of limited nutrient availability in the substrate, which is especially important in container cultivation of citrus plants. Mode of action Citrusenergie supports uniform plant growth, promotes intensive flowering, and proper fruit development. Regular fertilization improves leaf condition, increases resistance to environmental stress, and maintains stable plant vitality throughout the season. The product also helps reduce symptoms of nutrient deficiencies typical for citrus grown in pots. Dosage and application method dilute 4 ml of fertilizer in 1 liter of water, apply once a week from March to August, shake well before use, wait about 2 weeks after repotting before starting fertilization. Yield One bottle of Citrusenergie 1 l allows preparation of up to 250 liters of fertilizer solution, enabling regular and long-term fertilization of citrus plants with precise dosing.

    86,00 zł

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