Professional products Repotting substrates Unipot Medium
Professional repotting substrate for medium-cycle plants in 14–16 cm pots.
Unipot Medium is the Arber professional substrate with a blonde-brown peat balance (7–40 mm and 0–20 mm) for medium bench cycles: drainage and water retention calibrated for 3–6 months without compromising aeration.
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Features
Developed for nursery growers managing medium bench cycles (3–6 months), Unipot Medium provides medium-term structural stability through integrated wood fiber. The mixed 7–40 mm granulometry (Baltic blonde peat) balances drainage in the coarse fraction and water retention in the fine fraction, without compromising gas exchange.
Brown peat 0–20 mm completes the profile with a water buffer, reducing stress during heat peaks. The PG Mix starter fertiliser supports the re-establishment phase. The wetting agent helps with the first re-wetting of the root zone after repotting.
Selected peat from the Baltic countries: consistently from the same fields, season after season, to ensure quality continuity from batch to batch.
Technical specifications
| Structure | Medium |
|---|---|
| Granulometry | from 0-20 to 7-40 mm |
| pH | 5–6 |
| EC | 0.6–1 mS/cm |
| Dry bulk density | 118–144 g/L |
| Recommended pot | Ø 14-16 cm |
Why choose it
- Medium structure: drainage 45–50% and water retention 35–40%, balanced for medium cycles.
- Blonde peat 7–40 mm mixed granulometry: stable air-to-water ratio across 3–6 month cycles.
- Brown/black peat for water buffering: reduces stress during summer heat peaks.
- pH 5–6 and EC 0.6–1 mS/cm: formulated for foliage and flowering ornamentals in medium pots.
- Integrated starter fertiliser: covers the medium cycle through to the first top-up.
Composition
- blonde peat 7–40 mm
- brown peat 0–20 mm
- wood fiber
Illustrative proportions of structural components.
Additional components
- root activator
- wetting agent
Fertilisation
Base fertilisation
Available pack sizes
| Format | Units / pallet |
|---|---|
 70 L | 42 |
 250 L | 18 |
 Big Bale | 1 |
Substrates for potted plant growers
View all Arber substrates for this crop type, with selection criteria and technical comparison.
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