Water-soluble & available
All nutrients are water-soluble. In the prepared mixture, they are available to your tomato for uptake through roots and leaves.
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- For tomatoes in beds and containers
- Potassium-rich NPK concentrate
- With chelated trace nutrients
- 250 ml, twin pack or 1 litre
Start simply · explore when you want
Care for your tomato. Understand it, too.
Tomatoes often grow leaves, flowers and fruit at the same time. Our liquid concentrate supplements their nutrient supply; here you will find the application guide and knowledge relevant to your growing setup.
- Declared NPK
- 6.7 + 7.0 + 10.5With declared trace nutrients.
- Dilution
- 5 ml per 2.5 l of waterWith every watering until the fruit is ripe, during the growing season.
- Application
- Roots & foliageInitially feed young plants at half strength.
- Regular application period
- March–SeptemberApply only during active growth.
Product information
Application & dosageMix and apply to suit the growth stage.
Application in one place
Measure. Mix. Apply.
Mixing calculator for your tomato
Enter a known water amount or estimate a watering quantity from plant size.
Your water amountApproximate watering quantity per tomato plant
2.5 l
Matching concentrate amount
5 ml
1 capful = 5 ml. Use a suitable measuring aid for smaller partial amounts.
Enter valid positive values. Water amount: 0.1–1,000 litres; plant-size estimate: no more than 1,000 litres.
A guide for root watering only: for tomatoes, also consider container size, soil moisture and the usual watering amount. Do not water extra simply to reach the estimate; this does not calculate a spray volume.
How is the plant-size quantity calculated?
General GREEN24 guide: height × width in metres × 3–4 litres of prepared solution. cm are converted to m. The concentrate amount follows the tomato dilution and selected plant stage; plant size does not increase the concentration.
Prepare a clean container
Use a clean watering can or sprayer; preferably low-lime water or rainwater at 15–25 °C.
Calculate the amount
Choose the water volume in the calculator; use the initial setting for young tomatoes.
Add some water first
Start by filling the container with part of the chosen water volume.
Shake & measure
Shake the bottle. 1 capful = 5 ml; use a measuring aid for smaller partial amounts.
Add the concentrate
Add the calculated amount of concentrate to the water.
Top up & mix well
Top up to the chosen water volume and mix well. Watering or spraying: see below.
When to feed? Use with each watering until fruit ripeness, according to growth and only during the growing season. Regular period in Europe: March–September. Account for nutrients already in your tomato compost.
Watering · through the roots
Apply the mixture to a pre-moistened root zone. Ensure excess water can drain from tomato containers.
Spraying · onto the leaves
Wet tomato leaves in the morning, evening or under overcast skies, avoiding open flower clusters. Include this in the same feeding plan, not automatically as an extra to watering applications.
Characteristics & pack sizesThe concentrate and its pack sizes at a glance.
Net mass: 308 g for 250 ml; 1233 g for 1 litre.
The dilution is the same for both pack sizes.
| Pack size | Price |
|---|---|
| 250 ml | €9,85 EUR |
| 500 ml – twin pack (2 × 250 ml) | €18,95 EUR |
| 1 litre | €29,95 EUR |
Fits your growing setup
For tomatoes, peppers and chillies
Our Tomato Fertiliser feeds tomatoes, peppers and chillies. Variety and growing conditions determine the rest of the care plan.
During the growing season
Apply during active growth from March to September until fruit ripeness.
Allow for fresh compost
Include fertiliser already in fresh compost and previous feeds in the total supply. Do not add fertiliser to damaged or dried-out roots.
Beyond NPK · understand the formulation
Helping your tomato make use of its nutrients
From mixing to the tomato leaf: these properties support an even nutrient supply and straightforward application.
Protected trace nutrients
Copper, iron, manganese and zinc are chelated with EDTA. This protective binding helps keep these trace nutrients in solution and available to your tomato plant.
pH buffering in the mixture
The buffering system supports pH regulation in the prepared watering or spray solution. Nutrient supply for your tomatoes is considered right from mixing.
Even coverage on the leaf
Good wetting and adherence help spread the spray solution over tomato leaves. The dissolved nutrients are immediately available there for uptake.
Fewer hard-water effects
The formulation improves water quality in the mixture and helps reduce hard-water residues on tomato leaves.
Plant-friendly through fruiting
High plant compatibility also suits sensitive crops. In tomatoes, the nutrient supply supports rich leaf colour and the quality of growth, flowers and fruit.
What does this mean for your tomatoes?
Well-nourished leaves underpin sugar production and the supply to developing tomatoes. Leaf finish means an even, well-kept appearance, not an artificial glossy coating. Results also depend on light, water, variety and existing nutrition.
Chelation binds metal ions and can reduce troublesome hard-water effects; it does not remove calcium and magnesium from the water. Actual pH also depends on your source water. No specific target pH or complete softening is promised.
Straightforward application with common fertiliser dosing equipment, too. Set the device to the tomato dilution and follow its instructions.
Products
Pre-fertilised tomato compost, garden compost or slow-release fertiliser already supplies nutrients. Include these in your tomato feeding plan; do not routinely add a second complete fertiliser on top of our NPK concentrate. Do not mix undiluted concentrates together.
Our Tomato Fertiliser – like all GREEN24 liquid fertilisers – can be mixed individually with Dr. Stähler Schädlings-Frei-Organic, Trauermückenfrei Organic, KIRON Milben-Ex or Rosen Pilz-Frei BOCCACIO. For use on tomatoes, the crop, target organism and growing location must match the product's instructions; follow doses, pre-harvest intervals and the stricter conditions of both products. This does not confirm mixing these products with each other. Find the product cards below in the plant protection advice section.
Nutrient composition · NPKDeclared nutrients and their forms.
Declared nutrient percentages. Product pH: 6.9.
- 6.7% total nitrogen (N)
- 6% urea nitrogen
- 7% water-soluble phosphate (P₂O₅)
- 10.5% water-soluble potassium oxide (K₂O)
- 0.01% boron (B) · water-soluble
- 0.004% copper (Cu) · water-soluble · EDTA chelate
- 0.02% iron (Fe) · water-soluble · EDTA chelate
- 0.012% manganese (Mn) · water-soluble · EDTA chelate
- 0.001% molybdenum (Mo) · water-soluble
- 0.004% zinc (Zn) · water-soluble · EDTA chelate
GREEN24 · Plant knowledge
Tomatoes: from the first leaf to ripening fruit
Nutrients work with light, water, temperature and root space. Feeding to match demand supports tomatoes through growth, flowering and fruit development.
Leaves supply the plant
Leaves use light to produce sugars for growth and fruit development. Roots take up water and mineral nutrients; suitable root space remains essential.
Flowers can develop into fruit
Yellow tomato flowers can form fruit after successful pollination and fertilisation. Temperature and air movement also affect fruit set in a greenhouse.
Maintain a steady supply as fruit ripens
Leaves supply sugars as the fruit grows. Check soil moisture regularly and avoid large fluctuations; more fertiliser cannot compensate for too little water.
Matching products
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Tomato Compost
€6,90 View productFor tomatoes and other fruiting vegetables. Pre-fertilised; the compost label specifies feeding after about six weeks.
-
Seed Compost
From €2,50 View productFor sowing and suitable young plants in propagation containers. Allow for existing nutrients before later feeding.
-
PRO24 Propagator – G24
€23,95 View productFor propagation: tray, mat, 24-cell insert and cover supplied together.
-
Two-Piece Pricking-Out Tool Set
€3,95 View productFor carefully pricking out and transplanting small tomato plants.
-
Sneeboer Planting Trowel with Cherry Wood Handle
€54,95 View productFor adding compost and planting work in containers or beds.
Growth & nutrient uptake
Leaves use light; roots take up water and mineral nutrients. The diagrams show how plant organs work together and how nutrients are absorbed.
What does a plant do with nutrients?
Roots · absorb & anchorSupply the tomato from bed soil or container compost.
Fine tomato roots take up water and dissolved nutrients. Their space is limited in a container; evenly moist, well-aerated compost brings them into contact with the nutrient solution. Dilute the liquid concentrate in irrigation water – do not apply it directly to roots.
Leaves · capture energyMake sugars for new shoots and developing tomatoes.
Green tomato leaves use light to build sugars from carbon dioxide and water. These also supply roots and fruit. Nitrogen is needed for proteins and chlorophyll; our NPK concentrate supplements mineral nutrition. A bright growing position remains essential for sugar production.
Stem · support & connectSupport leaves and fruit trusses and connect them to the roots.
Transport tissues run through the tomato stem: xylem carries water and absorbed nutrients, while phloem distributes substances including sugars from the leaves. Growing shoot tips, roots and fruit trusses are connected through these pathways.
Flowers · enable fruit setFertilised tomato flowers develop into fruit.
For a tomato flower to develop into fruit, pollination, fertilisation and growing conditions must work together. Temperature and ventilation matter in a greenhouse. When applying this fertiliser to foliage, wet the leaves and leave open flower clusters unsprayed.
Fruit · grow & ripenReceive leaf-made sugars and grow with water and nutrients.
As tomatoes enlarge, sugars move from the leaves into the fruit. Potassium participates in water regulation and carbohydrate transport. Consistent soil moisture keeps supply steadier; large swings between drying out and watering stress fruit development.
Nutrients · working togetherNitrogen, phosphorus and potassium for mineral nutrition.
This formulation combines nitrogen for functions including proteins and chlorophyll, phosphorus for energy transfer, and potassium for water regulation and substance transport. These connect NPK nutrition with leaf growth and fruit development in your tomato. Declared trace nutrients and amounts are listed in the nutrient composition.
How nutrients enter your tomato plant
Select a point in the picture or choose a stage.
Stage 01 / 04
Water carries nutrients to the roots
Watering carries the prepared mixture into the soil around your tomato’s roots, where dissolved nutrients are available for uptake.
Good to knowAlways dilute the concentrate and keep to the stated dosage.
A closer look
Watering carries dissolved nutrients into the growing medium around the roots. Contact with the absorbing root surfaces is the first step.
Stage 02 / 04
Roots take up dissolved nutrients
Fine root hairs increase contact with the growing medium. Tiny transport proteins in the membranes surrounding root cells help dissolved nutrients enter the cells.
Good to knowRoots take up nutrients; they do not simply absorb all the fertiliser along with the water.
A closer look
Root hairs increase the contact area. Transport proteins in cell membranes enable mineral ions to enter; water movement and nutrient uptake are distinct processes.
Stage 03 / 04
An inner layer controls the route
On their way into the root, nutrients meet a special layer of cells. It prevents substances from simply flowing through the gaps between cells and helps the plant control uptake.
Good to knowMore fertiliser does not automatically mean better nutrition.
A closer look
Nutrients move through the root tissues. The endodermis acts as a control layer: its barrier interrupts unrestricted movement along the cell walls.
Stage 04 / 04
Transport channels carry water and nutrients
Inside the root are fine transport channels called xylem. Water and absorbed nutrients can travel through them towards shoots and leaves.
Good to knowHealthy roots and suitable growing conditions are important for nutrient supply.
A closer look
After entering the vascular tissue, nutrients can travel with the water stream in the xylem towards the shoot. Uptake and nutrient supply also depend on root health and growing conditions.
Stage 01 / 04
Diluted solution is applied to the leaf
The prepared mixture wets the tomato foliage. Keep open flower clusters free of spray.
Good to knowThis Tomato Fertiliser is suitable for foliar application. Use the prepared mixture, never undiluted concentrate.
A closer look
Foliar feeding places diluted nutrient solution on the leaf surface. Wetting depends on factors including the leaf surface and the solution.
Stage 02 / 04
Nutrients must cross the protective surface
The leaf surface protects the plant. Dissolved nutrients can pass through this layer; tiny openings in the leaf may also play a part. Uptake varies with the type of leaf and the conditions.
Good to knowDifferent leaves do not absorb a nutrient solution equally well.
A closer look
Dissolved nutrients can pass through the protective cuticle; pathways involving stomata may also contribute. Their relative importance varies with plant species and conditions.
Stage 03 / 04
Cells inside the leaf take up nutrients
Behind the surface lies living leaf tissue. Its cells can take up nutrients that have crossed the surface and use them for their activities.
Good to knowA droplet on a leaf does not yet mean its nutrients have been absorbed.
A closer look
After crossing the surface, nutrients can be taken up by living leaf cells. The amount depends on factors including the nutrient, formulation and environmental conditions.
Stage 04 / 04
Nutrients are used in the leaf and may move onward
The plant can use absorbed nutrients within the leaf. Some can also reach other plant parts. This depends on the nutrient and the plant's condition.
Good to knowFoliar feeding does not mean every nutrient immediately reaches the whole plant.
A closer look
Absorbed nutrients can be used within the leaf. Whether and how far they move to other plant parts depends on the nutrient and the plant's condition.
Development influences requirements
From establishment to ripe fruit
Young plant & establishment
Start by checking rooting space, light and consistent moisture. Account for fertiliser already in the compost. Choose the initial young-plant setting in the calculator.
Leaves, shoots & flowers
Tomatoes develop new leaf area while the first flower trusses form. Very lush leaf growth with delayed fruit set can indicate excess nitrogen; consider the whole nutrient supply.
Fruit development & ripening
As fruit develops, keep soil moisture as consistent as possible. Avoid assuming that every change in leaves or fruit means a fertiliser shortage.
Stages can overlap. Growth habit and variety influence development, so one side-shoot removal rule does not suit every tomato.
Application & calculator →Growing conditions & care problems
Adapt care to the growing conditions and stage of growth. If you notice changes, check light, water and roots first — then take targeted action.
Where does your tomato grow?
Bed · outdoors
Nutrient reserves and soil structure vary between sites. Account for compost and previous fertilisation; a soil test helps you assess them. Choose a sunny position for this warmth-loving crop.
Container · balcony & patio
Containers have limited rooting space and water reserves. Check moisture and drainage regularly and account for fertiliser already in the substrate. Extra fertiliser cannot replace a suitable pot.
Greenhouse · protected
Greenhouse tomatoes need ventilation and watering suited to the warmth. Also check whether the roots occupy a soil bed or a limited container. This affects water needs – it does not automatically call for a stronger fertiliser solution.
Indoors · mainly propagation
When raising tomatoes indoors, adequate light and compact young plants matter. For later fruit production, light and space must also suit the fully grown tomato plant.
What does your tomato need?
Late blight
Check rapidly spreading brown leaf and stem lesions and damaged fruit, especially after wet weather. Rain protection, drier foliage and airflow reduce disease pressure but do not replace diagnosis.
Blossom-end rot
A dark sunken patch at the blossom end is often a physiological disorder. Too little calcium reaches the fruit, for example when water supply fluctuates. Do not automatically add more fertiliser or lime.
Split fruit
Large swings from dry conditions to rapid water uptake can split the skin. Even moisture and timely harvesting help; susceptibility varies by cultivar.
Whitefly and aphids
Inspect young shoots and leaf undersides for sap-feeding insects and honeydew. Check greenhouse crops early and consider beneficial insects already present.
Flowers drop without setting fruit
Heat, unsuitable humidity and poor pollination can limit fruit set. Ventilate the greenhouse, check water demand and allow flowers to move; extra feed alone will not solve the problem.
Plant health advice for your tomatoes
Unsure whether care, nutrient supply or a pest or disease is involved? These details help us assess your tomato more specifically:
- Photos of the whole tomato plant, both sides of affected leaves and any affected fruit.
- Variety or growth type, approximate plant size and growing location: bed, container or greenhouse.
- When the change started, how you water and which fertilisers or plant protection products you have already used.
A photo alone may not be enough for a diagnosis. A plant protection product is only an option when the cause, tomato crop and growing location match its current authorisation.
Mixable with this fertiliser
These 4 products can each be mixed with this fertiliser.
-
Dr. Stähler
Schädlings-Frei-Organic – 100 ml
€16,95
Insect control: check the pest, tomato crop and location before use.
Mixable with GREEN24 liquid fertilisersView product & application -
Dr. Stähler
Trauermückenfrei Organic – 30 ml, neem concentrate against fungus gnat larvae
€9,99
For fungus gnat larvae: check the authorised crop and watering application for this product.
Mixable with GREEN24 liquid fertilisersView product & application -
Dr. Stähler
KIRON Milben-Ex – 30 ml
€12,95
Mite control: identify the infestation first and check the authorised use.
Mixable with GREEN24 liquid fertilisersView product & application -
Dr. Stähler
BOCCACIO Rosen Pilz-Frei – 24 ml
€13,95
Fungicide: check the disease, plant species and permitted growing location.
Mixable with GREEN24 liquid fertilisersView product & application
Follow doses, pre-harvest intervals and the stricter conditions of both products. Mixability applies to fertiliser plus one product at a time, not to all products mixed together. Do not mix undiluted concentrates together.
Use plant protection products safely. Always read the label and product information before use.
PLANTS A–Z
Tomatoes from planting to harvest
Bed, container or greenhouse: understand your tomato’s growth habit, care needs and common problems.
View the plant profile
PRACTICAL ADVICE
Why more fertiliser cannot solve everything
The law of the minimum explains how a factor in short supply can limit growth. More fertiliser cannot replace missing light, water or healthy roots.
Understand the law of the minimum
Quality products
Horticultural expertise
Our own production
Made in GermanyGREEN24's own products
Quick answers before you buy (FAQ)
Is this fertiliser suitable for my plant?
Our Tomato Fertiliser feeds tomatoes, peppers and chillies. Variety and growing conditions determine the rest of the care plan.
How do I dilute the concentrate?
Dilution: 5 ml per 2.5 l of water. Initially feed young plants at half strength.
Measure out the concentrate and mix it with the stated amount of water. Never apply undiluted.
How much solution does one pack make?
- 250 ml: 125 litres of diluted solution
- 500 ml – twin pack (2 × 250 ml): 250 litres of diluted solution
- 1 litre: 500 litres of diluted solution
Calculated at the stated standard dilution; the amount needed per application depends on the plant and growing conditions.
What should I check before use?
Do not apply in sunlight, below 5 °C or above 30 °C. Never apply the concentrate undiluted.
Safety and storage
Safety instructions
SDS – Safety data sheet available on request.
- Do not use undiluted. Shake well before use.
- Keep out of reach of children and animals.
- Preferably use low-lime water or rainwater at 15–25 °C.
- Do not apply in direct sunlight or at temperatures below 5 °C or above 30 °C.
- Apply to a pre-moistened root zone or spray the foliage. Do not spray open flowers.
- Initially feed young plants at half the stated dose.
Avoid contact with eyes, skin and clothing. Do not inhale spray mist. Wear protective clothing, rubber gloves and safety glasses and use clean, suitable equipment. Keep away from food and beverages. Wash hands and face thoroughly after use. Do not allow fertiliser or rinse water to enter drains or bodies of water.
Official advisory recommendations take precedence.
Wash your face and hands thoroughly. Use diluted fertiliser promptly and keep it out of water bodies and wastewater.
Product GPSR safety information
Download our complete general application guidance here. For your Tomato Fertiliser, use the mixture described above; general dose increases in the leaflet are not additional settings in the tomato calculator.
Storage
Storage, transport & product quality
Store above +8 °C and at no more than +38 °C. Keep dry, dark and out of reach of children and animals.
Keep tightly closed in the original container, separate from food and animal feed.
Avoid strong temperature fluctuations. Excessively high or low storage temperatures can cause discolouration and crystals. These crystals dissolve by the time the product is diluted; this does not affect product quality.
The packaging is suitable for material recycling and marked accordingly. Only send thoroughly cleaned containers to the appropriate recycling system. Never empty residual product or rinsing water into sewers, other drains or bodies of water.
Our information reflects current knowledge and describes the product and its uses. When the instructions are followed, the product is suitable for the recommended purposes. Storage and application are outside our control, and not all circumstances can be foreseen. We stand behind sound product quality at the time of delivery.
Manufacturer / company placing the product on the market
Guides for this product
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