Water-soluble & available
Phosphate, potassium oxide and trace nutrients are declared water-soluble. Dilute the concentrate carefully before use.
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- For orchids during active growth
- 2 ml concentrate per litre of water
- For root and foliar application
- 250 ml, twin pack or 1 litre
Start simply · explore when you want
Feed orchids. Understand roots and growth.
Phalaenopsis, Cattleya and Dendrobium follow different growth rhythms. The concentrate supplies the declared NPK nutrients; light, temperature, growing medium and species-specific rest periods determine when feeding is useful.
- Declared NPK
- 2.5 + 5.2 + 5.3With declared trace nutrients.
- Dilution
- 5 ml per 2.5 l of waterEvery 1–2 weeks during the growing season.
- Application
- Roots & foliageDilute with water before use.
- Regular application period
- January–December, only during active growthApply only during active growth.
Product information
Application & dosageDose according to actual water volume.
Application in one place
Measure. Mix. Apply.
Orchid dose calculator
Enter the actual volume of water required. The dilution is 2 ml per litre; medium, pot and root condition determine how much solution is needed.
Your water amountRough watering-volume guide
2.5 l
Matching concentrate amount
5 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.
The height of a flower spike does not describe the water needs of orchid roots. Use the actual water volume.
How the guide is calculated
Prepare a clean container
Use a clean watering can or sprayer; preferably low-lime water or rainwater at 15–25 °C.
Calculate the amount
Enter the actual water volume. The calculator uses the confirmed label dilution.
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? Every 1–2 weeks during active growth. January to December is the possible application window; do not automatically continue feeding during rest or absent growth.
Watering · through the roots
Moisten the root zone first, apply diluted solution and allow it to drain completely. Do not leave solution standing in an outer pot.
Spraying · onto the leaves
Lightly wet the leaves in the morning, evening or overcast conditions, avoiding open flowers. Root and foliar feeding count towards the same feeding schedule, not two parallel programmes.
Characteristics & pack sizesThe concentrate at a glance.
Net mass: 282 g for 250 ml; 1128 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 |
Does this fertiliser suit your plant?
For orchids
Feed orchids to match genus, growth stage and growing conditions.
Follow active growth
Apply diluted only; count root and foliar applications together.
Roots need air
Allow for existing feed after repotting. Investigate root damage, heavy leaf drop or an unclear condition before adding more fertiliser.
Beyond NPK · understand the formulation
Well mixed – available to leaves and roots
The concentrate combines declared major and trace nutrients. Its dilution applies to root and foliar use.
Protected trace nutrients
Copper, iron, manganese and zinc are declared as EDTA chelates. This binding helps keep these trace nutrients available in solution.
Feed according to demand
Consider dilution and growth rhythm together. Fertiliser cannot replace healthy roots or suitable light.
Consider nutrients and growing conditions together
This product is intended for orchids. Phalaenopsis, Cattleya and Dendrobium have different requirements; identify your plant before planning care.
Product pH 6.7 according to the original label. This describes the concentrate, not a guaranteed pH of prepared feed. Preferably use low-lime water or rainwater.
Use clean, suitable watering or spraying equipment. Measure the water and calculated concentrate quantity carefully.
Products
The recommendations cover products for different care tasks. Combining them in the same solution requires the instructions for both products to allow that combination. Otherwise, apply the products separately.
The recommendations cover products for different care tasks. Combining them in the same solution requires the instructions for both products to allow that combination. Otherwise, apply the products separately.
Nutrient composition · NPKDeclared nutrients and their forms.
Declared nutrient percentages. Product pH: 6.7.
Product pH describes the concentrate, not a guaranteed pH of soil or diluted feed solution.
- 2.5% total nitrogen (N)
- 1.6% urea nitrogen
- 0.4% nitrate nitrogen and 0.5% ammoniacal nitrogen (English original label).
- 5.2% water-soluble phosphate (P₂O₅)
- 5.3% 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
GREEN24 · Plant knowledge
Orchids: leaves, flowers and aerial roots
Phalaenopsis illustrates the orchid group here. Growth habit and rest requirements differ by genus.
Observe the whole plant
Leaves, new roots and shoots reveal how your orchid is developing. Match care to its genus and actual growth.
Flowers are only one part
Phalaenopsis hybrids can bloom at different times of year. Fertiliser supplies nutrients; light, temperature and plant condition also shape development.
Aerial roots belong to the plant
The illustration shows an aerial root above the pot rim. Preserve firm roots and do not force them into the medium. Silvery colour alone does not establish disease.
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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.
How orchids grow and use nutrients
Roots · uptake and attachmentFirm roots take up water and dissolved minerals.
Many epiphytic orchids have a multilayered root covering called velamen, which helps contact with water. Living tissues inside control nutrient uptake. Preserve firm aerial roots.
Leaves · capture energyFleshy Phalaenopsis leaves use light to produce sugars.
Healthy leaves supply the plant with sugars. Avoid direct summer sun and standing water in the crown; individual old leaves may naturally die back.
Shoot · carry leaves and flowersThe short main axis bears leaves; flower spikes emerge from its sides.
Phalaenopsis grows from a continuing main axis. Dendrobium may form storage canes. Living storage canes are not spent flower spikes and should not be routinely cut back.
Nutrients · working togetherNitrogen, phosphorus and potassium for mineral nutrition.
Nitrogen supports chlorophyll and protein formation. Phosphorus contributes to energy transfer, while potassium supports water regulation and transport. The formulation supplements these minerals and declared micronutrients; it cannot replace suitable light and root conditions.
Nutrient uptake through roots and leaves
Select a point in the picture or choose a stage.
Stage 01 / 04
The solution reaches orchid roots
Dissolved nutrients reach pre-moistened roots in the airy orchid medium when watering. Let excess solution drain afterwards.
Good to knowAlways dilute the concentrate and keep to the stated dosage.
A closer look
Dissolved nutrients reach pre-moistened roots in the airy orchid medium when watering. Let excess solution drain afterwards.
Stage 02 / 04
Root covering and living tissues
The root covering of many epiphytic orchids, the velamen, supports contact with water. Nutrients must then pass into living tissues.
Good to knowRoots take up nutrients; they do not simply absorb all the fertiliser along with the water.
A closer look
The root covering of many epiphytic orchids, the velamen, supports contact with water. Nutrients must then pass into living tissues.
Stage 03 / 04
Controlled uptake
Cell membranes and transport proteins control uptake of dissolved minerals. Water movement and nutrient uptake are different processes.
Good to knowMore fertiliser does not automatically mean better nutrition.
A closer look
Cell membranes and transport proteins control uptake of dissolved minerals. Water movement and nutrient uptake are different processes.
Stage 04 / 04
On to the main axis and leaves
Vascular tissue connects roots and aerial parts. Water and absorbed nutrients can be transported through the xylem.
Good to knowHealthy roots and suitable growing conditions are important for nutrient supply.
A closer look
Vascular tissue connects roots and aerial parts. Water and absorbed nutrients can be transported through the xylem.
Stage 01 / 04
The solution wets the orchid leaf
Use only prepared diluted solution. Avoid open flowers and the crown; count foliar feeding towards total nutrition.
Good to knowFoliar feeding is not an automatic extra dose of fertiliser.
A closer look
Use only prepared diluted solution. Avoid open flowers and the crown; count foliar feeding towards total nutrition.
Stage 02 / 04
Across the leaf 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
Living leaf cells
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
Use within the leaf and possible redistribution
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
Distinguish growth, flowering and rest
Young or repotted orchids
After repotting, check stability, root condition and drainage first. Count nutrients already in the medium; do not automatically start extra feeding.
New roots and leaves
Active roots, new leaves or shoots indicate development. Feed at the declared interval; stronger solution does not force flowering.
Species-specific rest
Phalaenopsis remains in warm cultivation. Some Dendrobium groups need different rest conditions. Identify the group and do not feed by calendar during rest.
Flowers alone do not measure feeding demand. Assess growth, roots and existing nutrients together.
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.
The orchid group determines its care
Pot · airy and freely draining
Choose suitable bark-based medium and free drainage for Phalaenopsis. A clear pot helps inspect the roots. Do not leave solution in the outer pot.
Position · light and warmth
Place Phalaenopsis in bright light protected from direct summer sun. Avoid draughts and heater heat; assess other orchid groups separately.
Winter · observe growth
Lower light can reduce water and nutrient demand. Observe the plant and apply the label interval only during active growth.
Repotting · preserve roots
Repot when the medium breaks down or space runs out, preferably while roots are active. Preserve firm aerial roots without forcing them into the medium. Select particle size to suit roots and watering.
What is changing in your orchid?
Investigate limp leaves first
Both shortage of water and damaged roots can produce limp leaves. Check root firmness and medium moisture before watering more often.
Avoid water collecting in the crown
Remove standing water from a Phalaenopsis crown. Isolate plants with soft, rapidly spreading patches and seek diagnosis; use separate containers.
Find hidden pests
Inspect leaf axils, undersides and spike nodes for mealybugs or scale. Observe new plants separately at first; identify the pest before selecting treatment.
Advice for your orchid
These details help assess growing conditions, root problems or a possible infestation:
- Photographs of the whole plant, roots, leaf undersides and affected areas.
- Genus or cultivar, pot, medium, position and last repotting.
- When the change began, watering pattern and previous feeding or care.
Discoloured leaves do not confirm nutrient deficiency. Identify pests and select treatment suitable for the plant and location.
PLANTS A–Z
Understand your orchid
Phalaenopsis, Dendrobium and other groups: distinguish growth, care and rest.
View the plant profile
PRACTICAL ADVICE
Coordinate repotting and feeding
Consider pre-fertilised medium and extra feeds together: the guide explains the relationship.
Read the plant nutrition guide
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?
Feed orchids to match genus, growth stage and growing conditions.
How do I dilute the concentrate?
Dilution: 5 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: 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.
- 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.
- Keep out of reach of children and animals.
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.
Product GPSR safety information
The original leaflet explains safe mixing and use. Follow the orchid product’s own dilution and application limits.
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.
Store dry and dark, above 8 °C and at no more than 38 °C. Keep in the tightly closed original container away from food and feed. Use diluted solution 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
Guides for this product
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