Stable for more than 12 months
The sleeve keeps its structure and properties for at least twelve months.
Lifespan
Rockwool lifespan
How long does rockwool last? An important question for growers who want to get the most out of their propagation material.
Paper Plug TraysEllepot FP 12+
The short answer
For propagation you use a rockwool plug for one growing cycle. The plug itself stays stable for months; the Ellepot FP 12+ paper sleeve keeps its structure for more than twelve months.
Indicative values
1growing cycle for propagation
6-12months for standard rockwool
12+months with FP 12+ sleeve
2-3cycles when reused
What the FP 12+ sleeve does
The Ellepot FP 12+ paper sleeve makes the difference during a longer propagation period.
Structure retention
No crumbling or disintegration of the plug.
Ready to plant directly
Roots grow through the paper, so you plant the complete plug.
Consistent quality
Properties remain constant during cultivation.
Factors that affect lifespan
Water quality
A high EC or pH can accelerate degradation.
Temperature
Temperatures above 30 °C shorten the lifespan.
Microbial activity
Fungi and algae can cause degradation.
UV exposure
Direct sunlight can damage the material.
Chemicals
Aggressive agents can damage the structure.
Reusing rockwool
Under the right conditions rockwool can be reused.
- 1
Remove old roots and plant residues.
- 2
Sterilise with steam or a suitable treatment.
- 3
Rinse thoroughly with clean water.
- 4
Re-buffer to the correct pH.
- 5
Check for structural damage.
- 6
Use only for less sensitive crops.
For propagating seedlings and cuttings we recommend single use, for optimal hygiene.
Maintenance tips for a longer lifespan
- Use clean water with a pH of 5.5 to 6.5
- Prevent algae growth with a light-blocking cover
- Check the EC regularly and flush where needed
- Ensure good drainage and oxygen supply
- Protect from direct sunlight
- Keep a temperature of 18 to 24 °C
- Inspect the material regularly
Responsible disposal after use
Recycling
Rockwool can be recycled into new material.
Reuse
Suitable for less critical applications.
Composting
The paper sleeve is biodegradable; the rockwool itself is not.
Waste processing
Through a certified waste processor.
Knowledge base
Further reading
Paper Plug Trays
Rockwool with an FP 12+ sleeve
Paper Plug Tray 84 and 104: rockwool plugs with an Ellepot FP 12+ paper sleeve, stable throughout propagation.