Total: 102.20€
SEIKI PK liquid fertilizer
22.00€
1 in stock
🧪 What is it and what is it for?
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Concentrated potassium phosphite: It is a mineral fertilizer rich in phosphorus (approx. 42 % w/v – 30 % w/w of P₂O₅) and potassium (28 % w/v – 20 % w/w of soluble K₂O)
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Nitrogen-free: Ideal for use in autumn, as it promotes the accumulation of reserves without promoting excessive growth
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Stimulates flowering and fruitingPhosphorus in the form of phosphite and potassium promote reproductive development and strengthening of the trunk and roots.
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Fungal action: It acts as a preventative against soil diseases, especially Phytophthora
💪 Main benefits
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Flowering and fruiting more abundant and showy.
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Greater resistance to soil fungi.
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Structural reinforcement of the trunk and roots.
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Accumulation of nutrients suitable for nitrogen removal in the cold season.
📋 Use and dosages
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Irrigation: 4–5 ml per liter of water.
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Foliar application: 1–3 ml per liter of water.
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Frequency: From the appearance of the first leaves in spring until mid-September; it can also be used in autumn to accumulate reserves
🧾 Exact composition
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Phosphoric (P₂O₅): 42 % w/v — 30 % w/w.
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Potassium (K₂O): 28 % p/v — 20 % p/p.
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Dissolved in water, no nitrogen content
🗓️ When to use it
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Spring-summer (from budding to September): Apply frequent low doses (4–5 ml/l in irrigation or 1–3 ml/l foliar).
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Autumn: As a resting treatment, to strengthen and prepare the bonsai for winter, without stimulating growth
✅ Practical summary
| Aspect | Details |
|---|---|
| Guy | Potassium phosphite (PK) |
| Volume | 1 liter |
| Phosphorus (P₂O₅) | 42 % p/v |
| Potassium (K₂O) | 28 % p/v |
| Nitrogen | None |
| For | Flowering, fruiting, fungal resistance and strength |
| Foliar mode | 1–3 ml/l |
| Irrigation mode | 4–5 ml/l |
| Periods of use | Spring to autumn (even pure autumn) |
Considerations
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Compatibility: Do not mix with nitrogen-rich fertilizers if you want to balance seasonal nutrients.
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Side effect: It can slightly modify the soil pH, but it is beneficial for assimilation in calcareous soils
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Security: Do not apply when the bonsai is weak or not actively sprouting.
In short, Seiki PK 1 L is a specialized fertilizer for promoting flowering/fruiting and preventing fungus. It's especially useful in autumn to strengthen reserves without promoting growth. Its concentration makes it economical when dosed appropriately.
