Product basis
Compound granular inorganic NPK fertiliser with Mg, S, B and Zn for direct application to soil.
Nitrophoska® Special 12-12-17 1Kg
Normal price
€3,00
GRANULAR FERTILISER FOR GARDENS & FRUITING PLANTSNitrophoska® Special
Nitrophoska® Special
12-12-17 · 1 kg
The practical pack of a complete granular fertiliser for gardeners who expect more than a basic NPK. Every granule combines nitrogen, phosphorus and a higher proportion of potassium with magnesium, sulphur, boron and zinc, helping distribute nutrition evenly across beds, vegetables, fruiting plants and lawns. Its low chloride content also makes it a considered choice for plants that are more sensitive to chloride-based fertilisers.
12-12-17 +TEComplete NPK formula
+ Mg & SMagnesium and sulphur
Low chloridePotassium in sulphate form
1 kgPractical pack
More than a basic 12-12-17
A balanced nitrogen and phosphorus base is combined with a higher proportion of potassium, plus magnesium, sulphur and two useful trace elements. Every nutrient in the formula is present within each granule, helping avoid uneven distribution of different nutrients through the soil.
- Nitrogen 12%: 5% nitrate nitrogen for immediate availability and 7% ammoniacal nitrogen.
- Phosphorus 12%: supports root function and the plant's energy processes.
- Potassium 17%: the higher proportion suits flowering, vegetable and fruiting plants.
- Mg, S, B and Zn: complete the core NPK nutrition for broader coverage of plant needs.
Every granule is complete
Instead of distributing separate granules with different compositions, every application point receives the same combination of nutrients.
A stronger potassium balance
The 17% potassium level offers the balance many gardens need for flowering, fruiting and plants with higher nutrient requirements.
Ready to spread
Apply it directly to soil with no mixing and no calculations in litres of water; a thorough watering afterwards is all that is needed.
When and where to use it
A strong all-round choice for outdoor spaces
Use it as a base dressing at the start of active growth or as a top dressing later, when the garden needs a complete NPK with extra potassium and additional nutrients.
Beds and ornamentals
For flowering plants, shrubs, climbers and other garden plants during active growth.
Vegetable garden
For vegetables and edible crops that need core nutrients, magnesium, sulphur and trace elements.
Fruiting plants
For citrus, olives, vines, fruit trees and fruiting shrubs.
Lawns
For even granular feeding across lawns and larger garden areas.
How much to use — clear and practical
The rates below are indicative for garden use. Start at the lower rate for young or sensitive plants and increase only when plant size and growing conditions require it.
- Beds: 30–60 g/m²
- Vegetable garden: 30–60 g/m²
- Lawns: 20–40 g/m²
- Trees/shrubs: 50–120 g
- Water afterwards: yes
Use approximately 30–60 g per square metre and distribute the granules evenly over the soil surface.
Use approximately 20–40 g per square metre, spreading evenly and watering thoroughly immediately afterwards.
Use approximately 50–120 g per plant according to its size and age. Spread beneath the canopy, not directly against the trunk.
Spread over lightly moist soil, work it gently into the surface where practical and water thoroughly to begin dissolving the granules.
Avoid direct contact
Do not leave concentrated granules on leaves, shoots or directly against the trunk, and do not exceed the rate. This product is not intended for foliar spraying and is not a multi-month controlled-release fertiliser.
One kilogram that covers real garden space
Depending on the rate, the 1 kg pack covers approximately 17–33 m² of beds or vegetable garden, or approximately 25–50 m² of lawn per application.
30 g/m²≈ 33 m²per application
40 g/m²25 m²per application
50 g/m²20 m²per application
60 g/m²≈ 17 m²per application
Calculation basis: 1,000 g pack divided by the selected rate per square metre.
Pack, form & storage
Available sizes
1 kg and 25 kg
The 1 kg pack is practical for home gardens. A separate 25 kg pack is available for larger areas, orchards or regular use.
Form
Uniform granules
Apply directly to soil. Moisture and watering help the granules release their nutrients.
Storage
Keep the pack tightly closed in a dry place and protect it from moisture. Store away from children and pets, and wash your hands after use.
Full guaranteed analysis
The complete formula in one place
The main instructions remain simple, while the nutrient forms and percentages are listed here in full.
Total nitrogenN 12%
Nitrate nitrogenN 5%
Ammoniacal nitrogenN 7%
PhosphorusP₂O₅ 12%
Water-soluble phosphorusP₂O₅ 7.8%
Water-soluble potassiumK₂O 17%
MagnesiumMgO 2%
Water-soluble magnesiumMgO 1.6%
Total sulphurS 8%
Water-soluble sulphurS 6.4%
BoronB 0.02%
ZincZn 0.01%
Frequently asked questions
Straightforward answers on rates, watering, coverage and correct garden use.
01What makes Nitrophoska® Special different from a basic granular fertiliser?
Every granule contains the same complete 12-12-17 formula together with magnesium, sulphur, boron and zinc. This helps distribute nutrients more evenly through the soil, while the higher potassium ratio is particularly useful for gardens with flowering, vegetable and fruiting plants.
02How much should I use in beds and the vegetable garden?
Use an indicative rate of 30–60 g per square metre. Start at the lower rate for young or more sensitive plants, distribute the granules evenly over the soil and water after application.
03How much should I use on lawns or around fruiting plants?
For lawns, use an indicative rate of 20–40 g/m². For fruit trees and shrubs, use approximately 50–120 g per plant according to size and age, spreading beneath the canopy rather than directly against the trunk.
04How should it be applied?
Spread the granules evenly over lightly moist soil, away from shoots and leaves. Work them gently into the surface where practical and water thoroughly so moisture can begin releasing the nutrients.
05Is this a slow-release or controlled-release fertiliser?
No. It is a compound granular fertiliser whose nutrients become available with moisture. It does not replace a multi-month controlled-release fertiliser and should not be overapplied.
06How should it be stored?
Keep the pack tightly closed in a dry place and protect it from moisture. Store away from children and pets, and wash your hands after use.