Water-soluble & available
All nutrients are water-soluble. In the fully diluted mixture, they are available for feeding through roots and leaves.
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Feed grapevines. Understand their seasonal cycle.
Grapevines of the genus Vitis are deciduous woody climbers. Their permanent framework carries new shoots, leaves and tendrils each year. Here you will find instructions for this fertiliser and plant knowledge covering training systems, flowering and grape development.
- Declared NPK
- 5.3 + 5.1 + 7.6With declared trace nutrients.
- Dilution
- 10 ml per 2.5 l of waterEvery 1–2 weeks during the growing season.
- Application
- Roots & foliageDilute with water before use.
- Regular application period
- April–AugustApply only during active growth.
Does it suit your vine?
For Vitis species
For grapevines of the genus Vitis in the ground or containers. Cultivar, rootstock and training system determine further cultivation.
April to August
Usual period April–August. Apply every one to two weeks during the growing season.
Container or garden
After planting or repotting, account for pre-fertilisation in the compost. If roots are dry or damaged, address growing conditions first.
Application in one place
Measure. Mix. Apply.
Dosing calculator for grapevines
Enter the amount of water actually required. Optionally, the height and lateral width of one leafy vine provide a rough guide for root watering. The dilution remains the same regardless of the training system.
Your water amountRough watering-volume guide
2.5 l
Matching concentrate amount
10 ml
1 capful = 5 ml. Use a suitable measuring aid for smaller partial amounts.
Enter a water amount from 0.1 to 1,000 litres.
A rough guide for root watering of one leafy vine, not for spraying. Measure height from soil level and lateral width, not tendril length, a single leaf or an entire trellis row. If vines cannot be clearly distinguished, enter the actual water quantity directly; also check soil, root-ball moisture and weather.
How the guide is calculated
General GREEN24 guide: height (m) × width (m) × 3–4 litres. Centimetres are converted to metres. The concentrate amount follows this fertiliser’s standard dilution. The estimate does not measure individual water requirements.
Prepare a clean container
Use a clean watering can or sprayer; preferably low-lime water or rainwater at 15–25 °C.
Calculate the amount
Select the required water quantity in the calculator. The standard dilution also applies when using the size guide.
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? Apply every one to two weeks during the growing season. Usual application period: April–August. Account for existing nutrients and the pre-fertilisation of fresh growing medium.
Watering · through the roots
Distribute the mixture in the previously moistened root zone. For container vines, consider the root ball and free drainage. For vines in the ground, also account for soil moisture and the root zone actually established.
Spraying · onto the leaves
Moisten both leaf surfaces finely in the morning, evening or under overcast skies; avoid open flowers. Foliar feeding belongs to the same feeding plan as root application, not automatically on top of it.
Properties & pack sizes Pack details for 250 ml and 1 litre
Net mass: 293 g for 250 ml; 1172 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 |
Nutrient composition NPK 5.3 + 5.1 + 7.6
Declared nutrient percentages. Product pH: 6.8.
- 5.3% total nitrogen (N)
- 4.8% urea nitrogen
- 5.1% water-soluble phosphate (P₂O₅)
- 7.6% water-soluble potassium oxide (K₂O)
- 0.0075% boron (B)
- 0.003% copper (Cu) · water-soluble · EDTA chelate
- 0.015% iron (Fe) · EDTA chelate
- 0.009% manganese (Mn) · EDTA chelate
- 0.0008% molybdenum (Mo)
- 0.003% zinc (Zn) · water-soluble · EDTA chelate
Compost, other fertilisers & care products
Pre-fertilised soil and fertiliser already in the root ball contribute to the nutrient supply. Each of the four care products listed below can be mixed with our liquid fertiliser. When applying them together, follow both products’ specific instructions; conflicting or stricter directions take precedence. Do not mix undiluted concentrates.
Our Grapevine Fertiliser can be mixed individually with Schädlings-Frei Organic, Trauermückenfrei Organic, KIRON Milben-Ex or Rosen Pilz-Frei BOCCACIO. This covers fertiliser plus one product, not approval for every grapevine application. Follow the crop, location and pre-harvest intervals in both sets of instructions.
Request the compatibility table →Beyond NPK · understand the formulation
The nutrient solution for roots and leaves
The water-soluble nutrients are diluted with water. For grapevines, application is intended through the root zone and onto existing vine leaves.
Protected trace nutrients
Copper, iron, manganese and zinc are declared as EDTA chelates. This binding helps keep these trace nutrients available in solution.
pH buffering for the mixture
The buffer system helps regulate the pH of the finished watering or spraying solution. The source water also influences the resulting value.
Even coverage on the leaf
Good wetting and adherence help distribute the spray solution across the leaves. Dissolved nutrients are then available at the leaf surface for uptake.
Reduce hard-water effects
The formulation helps reduce adverse hard-water effects and deposits on the leaves. Low-lime water or rainwater provides a good starting point.
Feed with plant tolerance in mind
Use the plant-compatible formulation at the specified dilution. For grapevines, a well-drained root zone, light and the existing nutrient supply form part of application planning.
Understand leaf formation and grape development
Nutrients support leaf formation and metabolism. Leaf finish means the appearance of well-kept foliage, not a glossy coating. Vine leaves produce sugars using light; grape development also depends on cultivar, weather and cultivation.
Chelation can reduce troublesome effects of water hardness; calcium and magnesium are not removed from the water. The product pH of 6.8 describes the concentrate, not the soil. The source water affects the pH of the finished mixture; no fixed target value is promised.
Use clean, suitable watering or spraying equipment. Measure the water and calculated concentrate quantity carefully.
The grapevine through the seasons
Lobed leaves. Small flowers. Grape clusters.
Leaves, tendrils and flower clusters grow on the current season’s shoots. Grape clusters can develop from the small flowers. Cultivar, training system and position shape the vine’s appearance.
Established wood supports new growth.
The perennial framework remains while new shoots and leaves grow. Leaves produce sugars for the plant; roots and vascular tissues connect the supply of water and nutrients.
Vine leaves produce sugars
The alternate leaves are usually palmately lobed with toothed margins. Their surfaces use light for photosynthesis. Size, lobing and autumn colour differ by species and cultivar.
Small flowers in branched clusters
The small greenish flowers grow in branched clusters. Many cultivated grape varieties are self-fertile, but this does not apply without exception to every species and cultivar. Cool, wet weather during flowering can affect fruit set.
Many berries form a grape cluster
Berry colour, size, skin and seeds depend on the cultivar. Light and warmth also influence ripening. Harvest table grapes when ripe for their cultivar: berries do not become sweeter after picking.
Grape clusters among vine leaves
Observe the arrangement of leaves, young shoots and grape clusters. An orderly framework keeps the fruiting zone accessible. Do not suddenly remove all its leaves: previously shaded berries can suffer sunburn.
Roots, vine wood and leaf surfaces
How the grapevine uses nutrients
Fine roots absorb water and dissolved nutrients from soil or growing medium. Vine leaves use light to produce sugars for growth and grape development. Perennial wood and current-season shoots connect the root zone, leaves and fruit clusters through their vascular tissues. Nitrogen is needed for proteins and chlorophyll, phosphorus participates in energy transfer, and potassium in water regulation. Cultivar, light, warmth and shoot arrangement also shape the vine’s development.
Roots · uptake & anchorageFine root regions absorb water and dissolved nutrients.
Fine roots obtain water and dissolved nutrients. In grafted vines, the rootstock forms the root system and helps determine soil suitability. A well-drained root zone and suitable moisture are important both in the ground and in containers.
Leaves · turning light into sugarsLobed vine leaves use light to produce sugars for the plant.
Leaves supply growing shoots and grape clusters with sugars they produce. Leaf shape and autumn colour differ by cultivar. An airy, orderly canopy distributes light and makes both leaf surfaces easier to inspect.
Vine shoots · climb and connectTendrils hold young shoots on supports; vascular tissues connect the plant’s organs.
Grape clusters form on the current season’s green shoots, mainly from buds on the previous year’s wood. This differs from the permanent framework. Guyot and cordon systems use different pruning methods; pruning length and bud number are chosen for cultivar, vigour and training system.
Grape clusters · many individual berriesThe berries use water, sugars and nutrients for their development.
The small flowers can develop into fruit clusters containing many berries. Table and wine-grape cultivars differ in features including size, skin and seeds. Ripening time and colouring depend on cultivar and growing conditions.
Understanding plant feeding
How nutrients enter your grapevine
The grapevine connects perennial wood with new shoots produced each year. Its leaves use light to produce sugars for growth and grape development. Absorbing root regions obtain water and dissolved nutrients from the ground or container. Vascular tissues run through vine wood and young shoots to the above-ground plant. This fertiliser can also be applied to existing vine leaves; both routes belong to the same feeding plan. The stations show uptake and transport as a functional diagram.
Select a point in the picture or choose a stage.
Stage 01 / 04
Nutrient solution reaches the roots
In pre-moistened soil, the diluted mixture meets fine root areas. Dissolved nutrients are available for uptake at the contact surface.
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
Uptake at the root surface
Fine root hairs increase contact with the soil. Transport proteins in cell membranes help take up dissolved nutrients.
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
Living root cells regulate uptake
Root cells regulate individual uptake steps. The plant is not simply flushed through with the entire contents of the watering solution.
Good to knowMore fertiliser does not automatically mean better nutrition.
A closer look
Controlled steps within root tissue lie between the root surface and onward transport. Transport across cell membranes enables nutrient uptake; water movement and nutrient uptake are different processes.
Stage 04 / 04
Onwards to shoots and leaves
Water and absorbed nutrients can move through the xylem to above-ground parts. Healthy roots and active leaves are part of this process.
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
The solution wets the leaf
Distribute the diluted mixture finely over both leaf surfaces. Apply in the morning, evening or under overcast skies and avoid open flowers.
Good to knowThis Grapevine Fertiliser is also suitable for foliar application. Use only when diluted and include the application in the overall feeding plan.
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
Crossing the protective leaf surface
Dissolved nutrients can cross the protective surface layer; routes involving small leaf openings may also contribute. Conditions and leaf characteristics affect uptake.
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
Leaf cells absorb nutrients
After crossing the surface, living leaf cells can take up nutrients and use them in metabolism. A visible droplet alone does not demonstrate this step.
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
Use in the leaf and onward movement
Nutrients may be used in the leaf or redistributed depending on the nutrient. This does not imply immediate, uniform nutrition of all fruit.
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
Young vines, summer growth and winter dormancy
Young vines · establish roots and a framework
After planting, root contact and establishing a suitable framework are priorities. Guide new shoots loosely and account for nutrients already present in the growing medium. No separate young-plant dosage stage is specified for this fertiliser.
New shoots, flowers and grape clusters
Buds open in spring; leaf surfaces, flower clusters and potentially grapes develop later. Young growth is more sensitive to late frost than the woody framework. Guide summer shoots in an orderly way and keep the fruiting zone accessible.
Leaf fall and winter dormancy
Grapevines shed their leaves and enter dormancy. Do not continue the summer feeding programme then. Protect container roots from severe cold and avoid complete drying; match pruning to the training system.
Consider growth, roots, weather and existing nutrients together. Plant size does not change the dilution or measure individual water demand.
Application & calculator →Your growing conditions matter
Where and how does your grapevine grow?
A sunny, warm position and a strong support provide the foundation. Soil, containers and different training systems change the available root space and the distribution of light and shoots. Cultivar and rootstock are chosen to suit position and climate.
Containers · account for limited root space
Use a sufficiently large container with free drainage. Check root-ball moisture regularly and account for pre-fertilisation. Container vines also need a sturdy support; on grafted plants, keep the graft union above the soil.
In the ground · position and rootstock
Provide well-drained soil, warmth and a suitable rootstock. Water young vines according to need during dry conditions. Beneath roof overhangs, rain may miss the root zone; check soil moisture there directly.
On a trellis · guide shoots in an orderly way
Distinguish the permanent framework from annual fruiting shoots. Secure young shoots loosely and keep leaves and grape clusters accessible. Pruning follows the cultivar and training system, not a universal rule for every vine.
On a pergola · plan the canopy and support
The structure must support the spreading vine. Arrange shoots so care and fruit inspection remain possible. For the size calculator, use only one clearly distinguishable plant; an entire covered pergola is not one plant’s width.
Matching growing medium and repotting set
Grapevine growing medium and the matching repotting set support container cultivation. Existing pre-fertilisation forms part of the total nutrient supply and is considered when supplementary feeding begins.
-
Grapevine Compost
€9,95 View productPre-fertilised grapevine growing medium for container cultivation. Begin supplementary feeding after around four to six weeks, accounting for the existing nutrient supply.
-
Grapevine Repotting Set
€18,95 View productThe repotting set contains grapevine growing medium and fertiliser. Include the supplied fertiliser in the overall feeding plan.
Understand plant care problems
What is changing on your grapevine?
Pale leaves, deposits, wilting shoots and damaged grape clusters have different causes. Examine both leaf surfaces, the root zone, weather and the course of flowering. Increasing fertiliser concentration does not replace this assessment.
Powdery and downy mildew
Record whitish coatings or unusual spots on both leaf surfaces. These are different diseases; variety choice, airflow and reliable diagnosis come before treatment.
Grey mould and damaged bunches
Inspect dense, injured or persistently damp grape clusters. Remove affected berries and dried fruit remains without unnecessarily injuring sound grapes.
Mites, grape moths and phylloxera
Leaf galls, webbing or feeding damage call for closer identification. Seek specialist advice if phylloxera is suspected; choosing a suitable rootstock starts when buying the vine.
Frost, sunburn and yellow leaves
Young shoots may wilt after late frost, while suddenly exposed berries can scorch. With yellow leaves, also assess moisture and roots; not every colour change requires more feed.
Advice for grapevines
This information helps us assess leaf development, shoot growth and changes in grape clusters:
- Photograph the whole vine, both leaf surfaces, young shoots and affected grape clusters. Also show deposits, spots or feeding damage in detail.
- State the cultivar and, if known, rootstock. Include whether it grows in the ground or a container, pot size, soil or growing medium, and the training system on a trellis or pergola.
- Describe when the change began, weather, watering and feeding, and the most recent pruning. If fruit has not set, include flowering conditions and possible frost damage.
Leaf changes alone do not establish a particular nutrient deficiency. Use only fruit from edible grape cultivars and identify the plant reliably; Vitis is not interchangeable with other climbing plants. Keep grapes and raisins inaccessible to dogs.
Confirmed mixing partners
These four care products can each be mixed individually with our liquid Grapevine Fertiliser.
-
Dr. Stähler
Schädlings-Frei-Organic – 100 ml
€16,95
Insect control: check the pest, plant species and authorised application site.
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: follow the authorised crop and watering application.
Mixable with GREEN24 liquid fertilisersView product & application -
Dr. Stähler
KIRON Milben-Ex – 30 ml
€12,95
Mite control: identify the infestation and follow the authorised application.
Mixable with GREEN24 liquid fertilisersView product & application -
Dr. Stähler
BOCCACIO Rosen Pilz-Frei – 24 ml
€13,95
Fungal control: check the disease, plant species and authorised growing situation.
Mixable with GREEN24 liquid fertilisersView product & application
Mixability applies to fertiliser plus one product at a time, not to all products mixed together. Follow crop, pest, application site, dose, waiting periods and the stricter requirements of both sets of instructions. Do not mix undiluted concentrates.
Use plant protection products safely. Always read the label and product information before use.
Quick answers before you buy (FAQ)
Is this fertiliser suitable for my plant?
For grapevines of the genus Vitis in the ground or containers. Cultivar, rootstock and training system determine further cultivation.
How do I dilute the concentrate?
Dilution: 10 ml per 2.5 l of water.
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: 62.5 litres of diluted solution
- 500 ml – twin pack (2 × 250 ml): 125 litres of diluted solution
- 1 litre: 250 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.
Avoid contact with eyes, skin and clothing. Do not inhale spray mist. Wear protective clothing, rubber gloves and safety glasses when handling the product. Keep away from food and beverages. Wash your face and hands thoroughly after use. Official advisory recommendations take precedence. Fertilisers may leave permanent stains on surfaces. Do not allow fertiliser to enter bodies of water or wastewater.
Official advisory recommendations take precedence.
Wash your face and hands thoroughly. Use diluted fertiliser promptly and keep it out of water bodies and wastewater.
Storage
Storage & product quality
Store in a dry, dark place above +8 °C and no higher than +38 °C. Keep out of reach of children and animals.
Keep tightly closed in the original container, separate from food and animal feed.
Avoid large temperature fluctuations. Temperature-related discolouration or crystals may occur; the crystals dissolve by the dilution stage at the latest and do not impair product quality. For this fertiliser, store dry and dark above 8 °C and at no more than 38 °C. Use diluted fertiliser promptly.
Do not allow fertiliser residues or rinsing water to enter waterways or wastewater. Follow the disposal instructions on the packaging.
Measure concentrate accurately and apply only after dilution. More fertiliser does not compensate for insufficient light, drought or damaged roots.
Manufacturer / company placing the product on the market
Product GPSR safety information
The original leaflet explains safe mixing and application. Use the product-specific dilution in this calculator for Grapevine Fertiliser; plan foliar and root feeding together.
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