Dilution, application interval and declared composition for primroses.
5 ml per 1 litre of water, every 1–2 weeks during the growing period, for watering or spraying. Regular application period on the label: April to August.
Garden primroses and polyanthus grow in sun or light shade in evenly moist, well-drained soil. Potted primulas need drainage and regular moisture checks. Requirements vary within the genus: a primula sold as a houseplant is not automatically suitable for permanent outdoor planting. Account for starter nutrients in fresh potting compost.
Apply only after dilution. Root and foliar feeding are alternative application routes. Follow the full safety and storage instructions below.
Application in one place
Enter the water volume you actually need. The calculator works out the matching concentrate amount from the label; it does not determine your plant’s water needs.
Measure the concentrate accurately. Use a suitable measuring aid for small quantities; never apply undiluted.
Enter a water amount from 0.1 to 1,000 litres.
Prepare a clean, suitable watering can or sprayer. Prefer low-lime water or rainwater at 15–25 °C.
Choose the required water volume and development stage: established plants 100%, young plants 50%, seedlings with leaves 20% of the product-specific base dose.
Start by adding part of the chosen water volume to the container.
Shake the bottle well and measure the calculated concentrate quantity accurately. Wear gloves and safety goggles when mixing.
Add the measured concentrate to the water already in the container. Do not mix undiluted concentrates together.
Top up to the chosen water volume and mix thoroughly. Use the diluted solution promptly for watering or spraying.
When to feed? 5 ml per 1 litre of water, every 1–2 weeks during the growing period, for watering or spraying. Regular application period on the label: April to August.
When watering is needed, moisten the root zone before feeding. Distribute the diluted solution evenly and let excess water drain away. Do not feed dry or waterlogged root balls.
Spray leaf surfaces with the label dilution, avoiding open flowers. Do not apply in direct sunlight, below 5 °C or above 30 °C. Do not inhale spray mist; wear gloves and safety goggles. Foliar feeding replaces a corresponding root feed rather than adding a second feeding programme.
Net mass: 281 g per 250 ml. The twin pack contains two 250 ml bottles.
| Pack size | Price | Yield at label dilution |
|---|---|---|
| 250 ml | 9.85 € Unit price ( 39.40 €/ l) | 50.0 l |
| 500 ml – twin pack (2 × 250 ml) | 18.95 € Unit price ( 37.90 €/ l) | 100.0 l |
Calculated yield at the stated standard dilution; actual use depends on water needs and application.
Declared mass percentages. Product pH: 6.8.
Additional volume figures on the original: B: 0.0625 g/l; Cu: 0.025 g/l; Fe: 0.125 g/l; Mn: 0.075 g/l; Mo: 0.0065 g/l; Zn: 0.025 g/l
Nutrients already in pre-fertilised compost and previous feeds contribute to the overall supply. Do not increase the dose to compensate for inadequate light or unsuitable watering.
No product-specific approval for mixing with other care or plant-protection products is provided here. Without explicit confirmation, apply separately and follow both products’ instructions.
Ask about product-specific compatibility →Understand the declared formulation
NPK 2.5 + 4.0 + 6.0.
2.5 % total nitrogen (N); 2 % urea nitrogen; 4 % water-soluble phosphate (P₂O₅); 6 % water-soluble potassium oxide (K₂O); 0.005 % boron (B); 0.002 % copper (Cu), EDTA chelate; 0.01 % iron (Fe), EDTA chelate; 0.006 % manganese (Mn), EDTA chelate; 0.0005 % molybdenum (Mo); 0.002 % zinc (Zn), EDTA chelate
Copper, iron, manganese and zinc are declared as EDTA chelates. Full contents are listed under nutrient composition and on the original reverse label.
The general instructions recommend low-lime water or rainwater. Product pH refers to the concentrate, not a guaranteed pH of the diluted solution or growing medium.
Nutrient figures describe composition. They do not replace the label dilution or checking light, drainage and actual growth.
Declared mass percentages. Product pH: 6.8. Additional volume figures on the original: B: 0.0625 g/l; Cu: 0.025 g/l; Fe: 0.125 g/l; Mn: 0.075 g/l; Mo: 0.0065 g/l; Zn: 0.025 g/l
Use clean, chemically suitable equipment. Keep to the measured water volume and calculated concentrate amount, and follow the full safety instructions.
Enlarge image ↗
Enjoy growing plants
Garden primroses and polyanthus grow in sun or light shade in evenly moist, well-drained soil. Potted primulas need drainage and regular moisture checks. Requirements vary within the genus: a primula sold as a houseplant is not automatically suitable for permanent outdoor planting. Account for starter nutrients in fresh potting compost.
Enlarge image ↗
Match your watering can
Start with water, measure the concentrate and mix evenly. The calculator helps with quantities and six illustrated steps guide preparation.
Calculate the fertiliser amount →Prepare the amount of nutrient solution you need. The dilution depends on this product and the required amount of water.
Clean the watering can, sprayer or bucket and rinse it with clean water.
Choose the amount of water you need and calculate the matching concentrate dose. The dosage calculator helps you do this.
Dilution: 5 ml per litre of water
Calculate the right amount →Pour part of the calculated amount of water into the container first.
Shake the closed bottle well. Then open it and measure the calculated concentrate dose with the dosing cap. Measure more than once if needed.
A full dosing cap holds 5 ml. Use suitable millilitre graduations for smaller amounts.
Pour the measured concentrate into the water already in the container.
Add the rest of the calculated water and mix thoroughly. Your diluted nutrient solution is ready.
Shake well before use. Choose the volume of water and measure the calculated concentrate dose. Pack size does not change the dilution.
Preferably use low-lime water or rainwater at 15–25 °C. Add the measured concentrate to the water and mix thoroughly. Never apply undiluted; prepare only what you need.
Check growth, growing-medium moisture and previous feeding. Feed only during active growth.
Application period: April to August, during active growth
For root feeding, moisten dry growing medium with water first. Check drainage; the pot should not remain standing in water.
Distribute the diluted solution over the pre-moistened root zone or spray the foliage. Do not spray open flowers. Do not apply in direct sunlight, below 5 °C or above 30 °C. Do not inhale spray mist.
Follow the safety instructions →For rooted plants, moisten the root ball, apply diluted feed and allow surplus water to drain.
Distribute diluted solution evenly over upper and lower leaf surfaces. Avoid open flowers.
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Water or spray
Root and foliar feeding are possible. Both count towards total nutrition. Detailed directions are available under application and safety.
Understanding plant feeding
Through the roots or through the leaves: explore four steps to discover how a plant takes up and uses nutrients.
Select a point in the picture or choose a stage.
Stage 01 / 04
Dilute the fertiliser with water according to the label. Watering carries this nutrient solution into the soil or growing medium around the roots.
Good to knowAlways dilute the concentrate and keep to the stated dosage.
Watering carries dissolved nutrients into the growing medium around the roots. Contact with the absorbing root surfaces is the first step.
Stage 02 / 04
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.
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
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.
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
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.
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.
View original diagram ↗GREEN24 diagram with German labels
Stage 01 / 04
For foliar feeding, diluted nutrient solution is sprayed onto the leaves. The product instructions tell you whether it is suitable for this use and how much to apply.
Good to knowSpray only as directed by the product instructions, never with undiluted concentrate.
Foliar feeding places diluted nutrient solution on the leaf surface. Wetting depends on factors including the leaf surface and the solution.
Stage 02 / 04
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.
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
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.
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
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.
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.
View original diagram ↗GREEN24 diagram with German labels
Understand the plant
Garden primroses and polyanthus grow in sun or light shade in evenly moist, well-drained soil. Potted primulas need drainage and regular moisture checks. Requirements vary within the genus: a primula sold as a houseplant is not automatically suitable for permanent outdoor planting. Account for starter nutrients in fresh potting compost.
View the plant group →GREEN24
From 4.95 €
( 0.99 €/ l)
Potting compost for potted primulas with suitable drainage; account for starter nutrients when feeding later.
5 litres · 10 litres
Delivery time: In stock · 1–3 days (DE)
Incl. VAT, plus shipping costs
Frequently asked questions
5 ml per litre of water. One capful equals 5 ml. The calculator scales the amount to your watering can.
At the base dilution, 250 ml is sufficient for 50 litres of water and the twin pack for 100 litres.
Every 1–2 weeks during active growth. Only during active growth and taking existing nutrition into account.
The GREEN24 standard uses 100% for established plants, 50% for young plants and 20% for seedlings with leaves. The calculator uses your selection.
Do not use flowering alone as the trigger. This product’s usual application period is April to August. Base feeding on active growth, nutrient need and existing nutrition, including starter fertiliser in potting compost.
Account for starter nutrients in fresh compost. Plan further feeding according to plant need and renewed root activity.
Photographs of the whole plant and both leaf surfaces, with details of location, compost and watering, help identify problems.
General manufacturer information: these products have not been selected here as suitable treatments for the plant shown here. Before use, check the plant species, pest, application site and current instructions.
Use plant protection products safely. Always read the label and product information before use.
SDS – Safety data sheet available on request.
Wash your face and hands thoroughly. Use diluted fertiliser promptly and keep it out of water bodies and wastewater.
Dry and dark
Store above 8 °C and at no more than 38 °C.
Keep out of reach of children and animals.
A safety PDF is not currently available for this product. Please refer to the product information below and the label.
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