Water-soluble & available
Phosphate and potassium oxide are declared water-soluble. Add the measured concentrate to water and mix thoroughly.
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- NPK 12 + 4 + 6
- 5 ml per 1.5 l water
- For root and foliar feeding
- Follow the product label
Start simply · explore when you want
Feed redwoods and distinguish their species
Giant sequoia and coast redwood are evergreen; dawn redwood is deciduous. Needle form, winter rhythm and space requirements matter for appropriate care.
- Declared NPK
- 12.0 + 4.0 + 6.0With declared trace nutrients.
- Dilution
- 5 ml per 1.5 l of waterEvery 1–2 weeks during the growing season.
- Application
- Roots & foliageYoung/newly planted trees: ¼ to ½ strength.
- Regular application period
- April–SeptemberApply only during the growing season.
Product information
Application & dilutionThis product’s own label information.
Application in one place
Measure. Mix. Apply.
Dilution calculator · redwoods
Enter the actual water volume required. 5 ml per 1.5 l water; no calculation from plant height.
Your water amountRough watering-volume guide
1.5 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.
Use the water volume actually needed. Plant height alone does not provide a reliable watering volume.
How the guide is calculated
Concentrate (ml) = water (l) × 5 ÷ 1.5 × selected label factor.
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 actually needed. Check root-ball moisture and drainage before watering.
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 from April to September. For young or newly planted trees, the label specifies one quarter to one half of the standard dose.
Watering · through the roots
Moisten the root ball first, then distribute the mixture evenly through the root zone. Ensure free drainage in pots and check soil moisture in borders. Do not feed dry or waterlogged roots.
Spraying · onto the leaves
Spray the diluted solution finely onto needles, avoiding open flowers. Do not apply in sunshine; account for root and foliar applications together.
PropertiesThis product’s own label information.
The twin pack contains two unchanged 250 ml bottles. The same dilution applies to all pack sizes.
| Pack size | Price | Net mass | Yield at label dilution |
|---|---|---|---|
| 250 ml | €9,95 EUR | 295 g | 75.0 l |
| 500 ml – twin pack (2 × 250 ml) | €18,95 EUR | 590 gcalculated: 2 × 295 g | 150.0 l |
| 1 litre | €29,95 EUR | 1180 g | 300.0 l |
At standard dilution, 250 ml makes a calculated 75 l and 1 litre makes 300 l of prepared solution.
Net mass excludes the packaging. The twin-pack total is calculated from two individual bottles.
Does this fertiliser suit your plant?
Identify your plant
For redwoods; consider the actual species and growing conditions.
Use during growth
Use during active growth when additional nutrients are needed; account for pre-fertilisation and previous applications.
Consider the root zone
Account for fertiliser in fresh compost after repotting. Begin extra feeding according to need and existing nutrients.
Beyond NPK · understand the formulation
Well mixed – available to leaves and roots
The concentrate supplies declared major and trace nutrients. At the correct dilution it can be applied through the root zone or foliage.
Protected trace nutrients
Copper, iron, manganese and zinc are declared as EDTA chelates. This binding helps keep these trace nutrients available in solution.
Reduce hard-water effects
Prefer low-lime water or rainwater at 15–25 °C for mixing. Assess the actual soil reaction separately.
Measure accurately and feed to need
The label dilution applies to watering and spraying. More concentrate cannot replace suitable growing conditions.
Nutrients and plant development
Nitrogen contributes to chlorophyll and proteins, phosphorus to energy transfer and potassium to water regulation. Growth also depends on light, water and healthy roots.
Copper, iron, manganese and zinc are declared as EDTA chelates. Product pH 6.8 describes the concentrate, not a guaranteed soil pH.
Use clean, suitable watering or spraying equipment. Measure the water and calculated concentrate quantity carefully.
Products
Pre-fertilised soil and previous applications count towards total nutrient supply. No specific tank-mix partner is approved in these packages. Apply other products separately according to their own labels.
Combine with another product only when both sets of directions explicitly allow it. Otherwise apply separately.
CompositionThis product’s own label information.
NPK fertiliser solution 12.0+4.0+6.0 with trace nutrients. Product pH: 6.8.
- 12.0% total nitrogen (N), comprising 12.0% urea nitrogen
- 4.0% water-soluble phosphate (P₂O₅)
- 6.0% water-soluble potassium oxide (K₂O)
- Fully water-soluble trace nutrients: boron 0.01%; copper 0.004%; iron 0.02%; manganese 0.012%; molybdenum 0.001%; zinc 0.004%
- Copper, iron, manganese and zinc chelated by EDTA.
Whole tree · leaves · cones
Redwoods with distinct characteristics
The original species diagram schematically shows giant sequoia, Sequoiadendron giganteum. Coast redwood and dawn redwood are different species.
Room for the whole crown
Giant sequoia: room for the whole crown.
Leaves along the shoot
The short leaves grow closely along the shoots.
Daniel Fuchs · Source · CC BY-SA 2.5
Unchanged; display without cropping.
Cones in detail
Cones rather than flowers with petals: a closer look at the reproductive structures.
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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.
From roots to trunk, needles and cones
Roots · absorb and anchorFine roots need water and oxygen for uptake.
Provide adequate root space and even moisture. Address waterlogging or a dry root ball first; higher concentration cannot compensate for root damage.
Trunk and branches · support and connectionWoody axes support the crown and contain conducting tissue.
Allow for eventual space requirements early. Routine shaping is not a standard requirement of giant sequoia.
Needles · capturing energyGiant sequoia has awl-shaped needles arranged spirally around the shoot.
The needle form shown belongs to giant sequoia. Do not conflate it with the flattened needle rows of other redwood species.
Cones · reproductionRedwoods are conifers; they form cones, not fleshy fruits.
Cones carry reproductive structures or seeds. Cone formation does not determine a different dose.
How nutrients enter your redwoods
Select a point in the picture or choose a stage.
Stage 01 / 04
The solution reaches the redwoods root ball
Apply the diluted mixture to the previously moistened root zone. Wet the root ball evenly without leaving water standing in an outer pot.
Good to knowAssess wilting through root-ball moisture and root health before increasing fertiliser.
A closer look
The first step is contact between dissolved nutrients and root regions capable of uptake. The diagram shows this function, not a species-specific tissue section. Assess wilting through root-ball moisture and root health before increasing fertiliser.
Stage 02 / 04
Uptake at the fine roots
Fine roots and root hairs contact the soil or growing medium. Dissolved nutrients enter root cells through regulated processes.
Good to knowFresh compost and existing soil reserves already contribute to your redwoods's nutrition.
A closer look
Root hairs increase the contact area. Transport across cell membranes is distinct from water movement alone. Fresh compost and existing soil reserves already contribute to your redwoods's nutrition.
Stage 03 / 04
Root cells regulate uptake
Cell membranes and transport proteins regulate the entry of dissolved nutrients. These processes are distinct from water moving through the plant.
Good to knowA stronger concentration cannot replace healthy roots or adequate rooting space.
A closer look
Controlled processes within living root cells lie between the surface and the conducting tissue. Functional blocks do not depict the entire root anatomy. A stronger concentration cannot replace healthy roots or adequate rooting space.
Stage 04 / 04
Onwards to shoots and redwoods leaves
After uptake, water and nutrients pass through conducting tissue to aerial plant parts. Growing conditions influence development.
Good to knowConducting tissue connects roots and new shoots. Development also depends on growing conditions.
A closer look
Xylem transports water and dissolved substances. Root health and growing conditions affect transport; leaf colour alone does not establish nutrient status.
Stage 01 / 04
The solution wets the redwoods leaves
Apply the diluted mixture finely to the leaves. Avoid open flowers; they are not the target of foliar feeding.
Good to knowCount foliar applications within the shared feeding plan, not automatically on top of a full root application.
A closer look
The leaf surface must contact the diluted solution. Wetting is the first step, not evidence that nutrients have already been absorbed. Count foliar applications within the shared feeding plan, not automatically on top of a full root application.
Stage 02 / 04
Across the redwoods leaf surface
The leaf blade has a protective surface. Dissolved nutrients can cross it; leaf age and application conditions affect uptake.
Good to knowLeaf or plant size alone does not justify a higher concentration.
A closer look
Nutrients can cross the protective cuticle; stomatal routes may contribute depending on conditions. The illustration is a functional diagram, not a species-specific tissue section.
Stage 03 / 04
Use by living leaf cells
Nutrients that have entered the leaf can be absorbed by its cells and used in metabolism. A visible droplet alone is not evidence of uptake.
Good to knowYellowing leaves have several possible causes. Also check soil reaction, watering and roots.
A closer look
After crossing the surface, nutrients can be taken up by living leaf cells. Quantity also depends on the nutrient and surrounding conditions. Yellowing leaves have several possible causes. Also check soil reaction, watering and roots.
Stage 04 / 04
Use and possible redistribution
Redistribution depends on the nutrient and plant condition. Foliar feeding does not guarantee a particular growth rate or flowering.
Good to knowFoliar feeding does not replace healthy roots or checks of light and water.
A closer look
Whether and how far nutrients are redistributed from a leaf varies by nutrient. This does not establish immediate feeding of the whole plant.
Development influences requirements
Distinguish establishment, growth and dormancy
Young tree and new planting
The label specifies one quarter to one half of the standard dose: 1.25–2.5 ml per 1.5 l water. Account for root condition and pre-fertilisation; do not feed automatically.
Active growth
During active growth, assess water demand, roots and existing nutrients. Height growth alone does not justify a stronger solution.
Dormancy and winter care
Do not feed routinely during dormancy. Giant sequoia and coast redwood retain foliage; dawn redwood sheds it.
Consider species, growth stage, root condition and existing nutrient supply together. Plant height alone does not determine the dose.
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.
Site and growing conditions for redwoods
Pots · moisture and rooting space
A sufficiently large container needs clear drainage holes. Water evenly as needed without keeping the root ball saturated; check moisture before watering again.
Borders · account for soil reserves
Plan adequate long-term clearance and root space. Check soil nutrient supply and moisture before adding nutrients.
Winter · consider the species’ rhythm
Protect container roots from strong temperature swings. Assess winter foliage by species; normal autumn leaf fall of dawn redwood is not evidence of deficiency.
Repotting & pruning · match the species
Increase root space in good time and retain the original planting depth. Account for pre-fertilisation. Do not plan routine crown shaping for giant sequoia.
What is changing on your redwood?
Consider the season
Copper-brown dawn-redwood needles in autumn can be normal. Assess the same change differently on giant sequoia or coast redwood.
Protect roots from water stress
For brown tips, check root-ball moisture, drainage, frost and heat. Extra fertiliser does not relieve compacted soil.
Investigate progressive damage
Record repeated shoot dieback, bark changes or fungal fruiting bodies and have the cause assessed.
Advice for your redwoods
These details help assess growing conditions, root problems or a possible infestation:
- Photographs of the whole plant, affected leaves/needles, shoots and root zone.
- Species/cultivar, garden or container, light, substrate and planting date.
- Timeline, moisture, frost and previous fertilisers or care products.
Dawn redwood normally sheds its foliage in autumn. Extensive browning and shoot dieback on evergreen species require separate investigation.
PLANTS A–Z
Redwoods
Consider growing conditions and nutrition together.
Read more
PRACTICAL ADVICE
Recognise nutrient needs
Consider growing conditions and nutrition together.
Read more
Quality products
Horticultural expertise
Our own production
Made in GermanyGREEN24's own products
Quick answers before you buy (FAQ)
How much fertiliser does my newly planted redwood need?
For young or newly planted trees, the label specifies ¼–½ of the standard dose: 1.25–2.5 ml per 1.5 l water.
When and how often should I feed during the growing season?
Feed every 1–2 weeks from April to September, using 5 ml per 1.5 l water. Use the reduced label dose for young or newly planted trees.
Will the 250 ml bottle be enough, or do I need 1 litre?
At standard dilution, 250 ml makes a calculated 75 l and 1 litre makes 300 l of fertiliser solution. How long it lasts depends on how much solution you actually use.
Can I feed when the root ball is dry?
Moisten dry soil or a dry root ball before feeding. Always dilute the concentrate with water.
Is it intended for watering or spraying?
The label permits watering and spraying with the diluted solution. Do not apply in strong direct sunlight.
Safety and storage
Safety instructions
SDS – Safety data sheet available on request.
Keep out of reach of children and animals. Avoid contact with eyes, skin and clothing; do not inhale spray mist.
Wear protective gloves and safety glasses when mixing and applying. Use clean, chemically suitable containers and equipment.
Keep away from food and beverages; wash your face and hands after use. Avoid overdosing.
Do not allow the product to enter bodies of water or wastewater. Dispose of residues in accordance with local requirements.
Fertilisers can leave permanent stains on surfaces.
Supplementary information based on the manufacturer’s label. Follow the label on the supplied container. This information does not replace a required safety data sheet or product labelling.
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.
The product label takes precedence. Also consult the application leaflet.
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 supplements the product labels. The calculator uses only the verified product dilution and the actual water volume selected.
Storage
Storage & product quality
Store dry and dark above +8 °C and no higher than +38 °C. Keep in the tightly closed original container, separately from food and animal feed. 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 no higher than 38 °C. Keep in the tightly closed original container, separately from food and animal feed. 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
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