Professional products Specific formulas Blueberry K1 + Perlite
Professional substrate for container blueberry: consistent drainage and naturally acidic pH.
Blueberry K1 + Perlite is the Arber professional substrate for growing blueberry in containers. It combines Baltic blonde peat 20–40 mm, brown peat 0–20 mm, coconut fiber and perlite: naturally very acidic pH (3.5–4.5) and consistent drainage. For pots from Ø 16 cm and above.
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Features
Blueberry requires very acidic pH and consistent drainage for healthy roots. Blueberry K1 + Perlite is developed for exactly this. The medium-coarse structure combines Baltic blonde peat 20–40 mm and brown peat 0–20 mm, completed with coconut fiber and perlite. This maintains consistent drainage and root oxygenation throughout the full growing cycle. The naturally very acidic pH (3.5–4.5) matches the range that blueberry requires. Blueberry is particularly sensitive to incorrect pH and to hard irrigation water.
The very low conductivity (0.1–0.3 mS/cm) protects roots from salt stress. This is essential for blueberry, which has naturally low salt tolerance. The PG Mix starter fertiliser is dosed low to preserve the required saline profile. The wetting agent supports easy first rehydration of the root zone. Blueberry K1 + Perlite is suited for pots from Ø 16 cm and above — for both field container growing and annual repotting of mature plants.
Selected peat from the Baltic countries, extracted consistently from the same fields season after season, ensures quality continuity from batch to batch.
Technical specifications
| Structure | Medium-Coarse |
|---|---|
| Granulometry | from 0-20 to 20-40 mm |
| pH | 3.5–4.5 |
| EC | 0.1–0.3 mS/cm |
| Dry bulk density | 150–160 g/L |
| Recommended pot | Ø from 16 cm up |
Why choose it
- Medium-coarse structure: fast drainage for long container cycles.
- Blonde peat 20–40 mm with coconut fiber and perlite: aeration over the long cycle.
- pH 3.5–4.5 and EC 0.1–0.3 mS/cm: no pH correction needed, compatible with hard irrigation water.
- Dry bulk density 150–160 g/L: a lightweight substrate for large orchard containers.
- Integrated starter fertilisation: immediate nutritional support for the first growth phase.
Composition
- blonde peat 20–40 mm
- brown peat 0–20 mm
- coconut fiber
- perlite
Illustrative proportions of structural components.
Additional components
- wetting agent
Fertilisation
Base fertilisation
Available pack sizes
| Format | Units / pallet |
|---|---|
 70 L | 42 |
 250 L | 18 |
 Big Bale | 1 |
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