Water-soluble & available
All nutrients are water-soluble. In the fully diluted mixture, they are available for feeding through roots and leaves.
Click the image to explore the details
Move your mouse over the image for a closer look
Quality products
Horticultural expertise
Our own production
Made in GermanyGREEN24's own products
Start simply · explore when you want
Feeding strelitzias. Understanding their growth habit.
Strelitzia reginae forms a low clump, while Strelitzia nicolai becomes much larger and develops stems. Start with application, then explore the connections between roots, leaf fans and flowers. Heliconias are a different plant genus, although this fertiliser is intended for both.
- NPK declaration
- 5.9 + 8.0 + 10.2With declared trace nutrients.
- Dilution
- 10 ml per 2.5 l of waterEvery 1–2 weeks during active growth.
- Application
- Root & foliarLabelled for Strelitzia and Heliconia.
- Regular application period
- April–SeptemberApply only during active growth.
Fits your care routine
Two labelled plant groups
For Strelitzia and Heliconia. The plant knowledge here describes Strelitzia, especially S. reginae and S. nicolai; heliconias belong to a different botanical family.
During active growth only
During active growth, normally April–September. Consider light, root condition and nutrients already present together.
Check moisture and existing nutrients
After repotting, allow for fertiliser already in the compost. A new division needs its own roots and suitable moisture before regular feeding makes sense.
Application in one place
Measure. Mix. Apply.
Dilution calculator for strelitzias
Enter the water volume you need, or use the height and overall width of one strelitzia as a rough watering guide. Measure the whole leaf fan or clump, not an individual leaf.
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 root-watering guide for one strelitzia only, not a foliar spray volume. Measure height from the growing-medium surface and the overall width of the leaf fan or clump. Also check pot volume, root-ball moisture, rooting, light and temperature; do not force the suggested amount.
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
Enter the water volume. When using the size-based guide, also check root space and actual root-ball moisture.
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, normally April to September. Water as needed between feeds. Account for pre-fertilisation; pause feeding when growth is low rather than continuing by the calendar alone.
Watering · through the roots
Pre-moisten the root zone and distribute the mixture evenly over the growing medium. Excess water must drain away. A densely rooted container needs sufficient space and suitable moisture, not an independently strengthened fertiliser solution.
Spraying · onto the leaves
Lightly wet existing leaf surfaces in the morning, evening or overcast conditions, avoiding open flowers. Large leaves still receive the standard dilution. Count foliar applications within the same feeding plan as root feeding.
Product characteristics Liquid concentrate for Strelitzia and Heliconia.
Dilute with water for root or foliar feeding according to the label. The full nutrient declaration has its own information section.
- Net mass: 312 g per 250 ml bottle.
| Pack size | Price |
|---|---|
| 250 ml | €9,85 EUR |
| 500 ml – twin pack (2 × 250 ml) | €18,95 EUR |
Nutrient composition NPK 5.9 + 8.0 + 10.2
Product pH: 6.6. This describes the product, not the resulting soil pH.
- 5.9% total nitrogen (N), comprising 1.4% nitrate nitrogen, 1.1% ammoniacal nitrogen and 3.4% urea nitrogen.
- 8.0% water-soluble phosphate (P₂O₅).
- 10.2% water-soluble potassium oxide (K₂O).
- 0.01% water-soluble boron (B).
- 0.004% water-soluble copper (Cu), as EDTA chelate.
- 0.02% water-soluble iron (Fe), as EDTA chelate.
- 0.012% water-soluble manganese (Mn), as EDTA chelate.
- 0.001% water-soluble molybdenum (Mo).
- 0.004% water-soluble zinc (Zn), as 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 strelitzia fertiliser is individually compatible with Schädlings-Frei Organic, Trauermückenfrei Organic, KIRON Milben-Ex or Rosen Pilz-Frei BOCCACIO. This confirmation applies to the fertiliser with one product at a time. Follow the specific instructions and stricter conditions of both products.
Request the compatibility table →Beyond NPK · understand the formulation
Well mixed – available to leaves and roots
Water-soluble nutrients and coordinated formulation properties support strelitzia nutrition. The fully diluted mixture can be applied to the root zone or existing leaf surfaces.
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
Good plant tolerance under suitable application conditions supports new leaves and shoots. Light and root conditions appropriate to the species remain important for your strelitzia’s development.
Understanding leaf quality and flower development
Appropriate nutrition supports leaf formation and green foliage. Leaf finish describes a well-maintained appearance, not a sprayed-on shine. Extra nutrients do not reverse leaf splits; no particular flower count or smaller mature size is promised.
Chelation binds metal ions and can reduce disruptive effects of water hardness; it does not remove calcium or magnesium from the water. The product pH of 6.6 describes the concentrate. The pH of the prepared mixture also depends on the source water; no fixed target value is promised.
Use clean, suitable watering or spraying equipment. Measure the water and calculated concentrate quantity carefully.
Growing strelitzias through the year
Leaf fans. Flowers. New growth.
Upright leaf fans define the strelitzia’s habit. Flowers appear only with suitable species, maturity and conditions. Observe new leaves and available space rather than judging flowering readiness from size alone.
Following leaf development.
The concentrate supplements mineral nutrition during growth. A bright position, adequate root space and even moisture are equally important. The two commonly grown species retain their different growth habits.
Leaf fans make use of a bright position
Long-stalked leaves form fans. New leaves unfold as older outer leaves are gradually replaced. The large blades of S. nicolai can split lengthwise without losing all their function.
Flowers distinguish the species
Mature S. reginae can bear orange and blue flowers. S. nicolai’s white and blue flowers are rare indoors. Winter flowering in an older S. reginae does not automatically mean its summer feeding plan should continue unchanged.
New shoots need space
New leaves develop within the fans, while side shoots enlarge the plant. Retain healthy young growth. Do not clip strelitzias like hedges or cut off S. nicolai stems as a supposed propagation method.
From the root zone to fresh shoots
How your strelitzia obtains nutrients
Roots take up water and dissolved nutrients from the growing medium. Long-stalked leaves use light to produce sugars for new tissues. S. reginae carries its leaf fans close to the ground, while S. nicolai develops tall stems as it matures. Nitrogen contributes to protein and chlorophyll formation, phosphorus to energy transfer and potassium to water regulation. Flowering also requires suitable maturity and growing conditions; nutrition alone does not trigger it.
Roots · uptake & anchorageExplore the root zone and supply the leaf fans.
Strelitzias develop strong, fleshy roots. Absorbing root regions need moisture and oxygen. Protect healthy roots when repotting and maintain drainage; constantly wet compost can impair their function.
Leaves · using lightLong-stalked leaf blades produce sugars for growth and maintenance.
New leaves unfold from the fan. Nitrogen and trace nutrients support their metabolic functions. Larger S. nicolai leaves can split lengthwise; a green split leaf still functions and is not evidence of insufficient fertiliser.
Shoot base & leaf fan · structural growthSupport the leaves and form different growth habits according to species.
S. reginae forms clumps with leaf fans near the ground. S. nicolai becomes larger and stem-forming; it is not a permanently compact indoor alternative. A division needs its own roots and an intact base; a single leaf is not a cutting.
Flowers · maturity and species matterFlower form and readiness to bloom differ between species.
Mature S. reginae can produce orange and blue flowers; in ‘Mandela’s Gold’ the orange part is yellow. S. nicolai has white and blue flowers and rarely blooms in homes. Nutrients support development but cannot replace plant maturity or sufficient light.
Understanding plant feeding
How nutrients enter your strelitzia
Strong, fleshy roots supply the strelitzia’s leaf fans. Absorbing root regions need moisture and oxygen. Once taken up, dissolved nutrients can travel with water towards the long petioles and leaf blades. This concentrate can also be applied to the leaf surfaces. S. reginae and S. nicolai retain their different growth habits and flower forms.
Select a point in the picture or choose a stage.
Stage 01 / 04
The nutrient solution reaches the strelitzia roots
The fully diluted mixture reaches the strelitzia root zone. Dissolved nutrients are available at the contact surfaces between the growing medium and absorbing root regions.
Good to knowConstantly wet compost can impair the function of the strelitzia’s strong roots.
A closer look
Watering carries dissolved nutrients into the growing medium around the roots. Contact with the absorbing root surfaces is the first step. Constantly wet compost can impair the function of the strelitzia’s strong roots.
Stage 02 / 04
Uptake at the root surface
Absorbing root regions are in contact with the moist growing medium. Cell membranes and transport proteins regulate the entry of dissolved nutrients into root cells.
Good to knowProtect healthy, fleshy roots when repotting and maintain drainage.
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. Protect healthy, fleshy roots when repotting and maintain drainage.
Stage 03 / 04
Root cells regulate uptake
Cell membranes and their transport proteins regulate nutrient uptake. Water movement and nutrient uptake are different processes; this drawing explains their function rather than a microscopic section of a Strelitzia species.
Good to knowMore concentrate cannot replace healthy roots or adequate root space.
A closer look
Cell membranes and their transport proteins regulate nutrient uptake. Water movement and nutrient uptake are different processes; this drawing explains their function rather than a microscopic section of a Strelitzia species. More concentrate cannot replace healthy roots or adequate root space.
Stage 04 / 04
Onwards to petioles and leaf blades
After uptake, water and dissolved nutrients can travel through the xylem towards shoots and leaves. The long petioles connect the leaf blades to the base of the leaf fans.
Good to knowGround-level clumps in S. reginae and the larger, stem-forming habit of S. nicolai are species characteristics.
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. Ground-level clumps in S. reginae and the larger, stem-forming habit of S. nicolai are species characteristics.
Stage 01 / 04
The diluted solution wets the strelitzia leaf
The fully diluted mixture wets the leaf surface. Avoid open flowers and spray only under suitable application conditions.
Good to knowFoliar application belongs to the same feeding plan as root application; avoid open strelitzia flowers.
A closer look
Foliar feeding places diluted nutrient solution on the leaf surface. Wetting depends on factors including the leaf surface and the solution. Foliar application belongs to the same feeding plan as root application; avoid open strelitzia flowers.
Stage 02 / 04
Uptake across the strelitzia leaf surface
The leaf surface protects the living tissue. Dissolved nutrients can pass this barrier; leaf characteristics and application conditions influence uptake.
Good to knowLengthwise splits in green S. nicolai leaves do not automatically indicate insufficient fertiliser.
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. Lengthwise splits in green S. nicolai leaves do not automatically indicate insufficient fertiliser.
Stage 03 / 04
Strelitzia leaf cells 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 knowNew leaves unfold from the leaf fan. Their growth requires suitable growing conditions as well as nutrients.
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. New leaves unfold from the leaf fan. Their growth requires suitable growing conditions as well as nutrients.
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 knowNutrient supply cannot replace the maturity S. reginae needs to flower or adequate light; S. nicolai rarely flowers in homes.
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. Nutrient supply cannot replace the maturity S. reginae needs to flower or adequate light; S. nicolai rarely flowers in homes.
Development influences requirements
Establishment, leaf development and slower growth
Young plants & rooted divisions
Young strelitzias are initially grown for their foliage. After division or repotting, first secure healthy roots, suitable moisture and drainage, and account for existing fertiliser. A flower photograph does not mean the plant is immediately mature enough to bloom.
New leaves & side shoots
New leaves develop in the bright, warm growing season. Feed at the stated interval and monitor root-ball moisture and available space. Slow growth or absent flowers alone do not justify more concentrate.
Winter · evergreen, often slower
Strelitzias remain evergreen; complete autumn leaf fall is not part of their normal cycle. In low light and slow growth, reduce watering as needed and pause feeding. A bright, warm room can have different water requirements from cooler winter accommodation.
Consider species, maturity, light, root space and existing nutrients together. Height alone determines neither a different dilution nor individual water requirements.
Application & calculator →Your growing conditions matter
Where is your strelitzia growing?
A bright room, conservatory or sheltered summer position each offers different conditions. Plan for the long-term height and width of your species. Strelitzias are not woody plants kept small by shaping.
Container · root space and stability
Choose a stable container with open drainage. During growth, maintain even moisture without leaving the roots standing in water. Plan an appropriate pot change when root space becomes tight.
Summer position · acclimatise to sun
A warm, sheltered outdoor position can suit the plant in summer. Acclimatise gradually to direct sun after indoor conditions and bring plants inside before cold nights. Protect large leaves from bending and strong wind when moving them.
Room & winter accommodation · maintain light
Overwinter in bright, frost-free conditions and water less when growth slows. Check leaf undersides and stalk bases for spider mites, scale insects and mealybugs. Choose a position where the large fans are not permanently pressed against ceilings or windows.
Repotting & division · protect the roots
When roots fill the pot, move to a slightly larger container in spring or early summer. Retain planting depth and protect fleshy roots; move large specimens with another person. Allow for fertiliser already present in fresh compost before further feeding.
For strelitzia care
Banana and strelitzia compost or the strelitzia repotting set support the next pot change. Choose according to root space and the growing medium you need; its included fertiliser already contributes to nutrition.
-
Banana & Strelitzia Compost
From €5,90 View productA matching growing medium for the next repotting. Allow for the nutrients already included when planning further feeding.
-
Strelitzia Repotting Set
€15,95 View product10 litres of banana and strelitzia compost plus 250 ml of this fertiliser. The set is an alternative to buying separately; account for existing supplies and pre-fertilisation.
Understand plant care problems
What is changing on your strelitzia?
Split leaves, brown margins, soft leaf bases and absent flowers have different causes. Check light, root-ball moisture, roots and your plant’s species. A large Strelitzia nicolai rarely flowers indoors; that alone is no reason to add more fertiliser.
Scale insects and mealybugs
Inspect leaf undersides and stalk bases for attached scales, white waxy deposits and sticky residue. Separate affected plants and identify the pest before treatment.
Spider mites
Pale stippling and fine webbing call for inspection of leaf undersides with a magnifier. Dry indoor air and warm conditions favour problems.
Root rot and persistent wetness
If compost stays wet and leaves or leaf bases soften, check drainage and roots. Do not respond with extra fertiliser; seek advice for unexplained damage.
Split leaves and brown margins
Lengthwise splits can result from wind or mechanical stress. For brown margins, also check root-ball moisture, dry air and salt build-up; the appearance alone does not establish a nutrient deficiency.
No flowers
For S. reginae, first consider maturity, light and previous growing conditions. Lack of flowers is usual for S. nicolai indoors. Do not increase the fertiliser dose for this reason.
Advice for your strelitzia
These details help assess growing conditions, root problems or a possible infestation:
- Photos of the whole plant, leaf fans and newest growth, plus both surfaces of affected leaves. Include the leaf bases.
- Species or cultivar, plant age, pot size and growing medium; distinguish S. reginae from S. nicolai if possible.
- Summer and winter positions, onset of changes, root-ball moisture, recent repotting or division, and previous feeding.
Leaf colour alone identifies neither a nutrient deficiency nor the amount of feed needed. Targeted soil or leaf analysis may help with unclear damage. Identify the cause before choosing a plant-protection treatment.
Confirmed mixing partners
These four plant-care products are individually compatible with our strelitzia liquid 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 Strelitzia and Heliconia. The plant knowledge here describes Strelitzia, especially S. reginae and S. nicolai; heliconias belong to a different botanical family.
How do I dilute the concentrate?
Dilution: 10 ml per 2.5 litres 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
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.
- Shake before use. Never apply undiluted.
- Preferably use low-lime water or rainwater at 15–25°C.
- Do not apply in direct sunlight, below 5°C or above 30°C.
- Feed the pre-moistened root zone or spray foliage; avoid 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.
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 this strelitzia concentrate’s own dilution in the calculator and account for root and foliar applications together.
Guides for this product
Similar products
More products to compare and discover.
-
Banana Fertiliser
From €11,95 View productCompare within the range: banana fertiliser with its own composition and directions.
