Ornamentals
Fertilisation and leaf health for roses
Roses are grown for flower quality and leaf health rather than biomass, and mildew is the most common spoiler. The higher concentrations below apply to fogging equipment and boost spray — these are container concentrations, not the strength reaching the leaf.
Dosage by stage
Drip irrigation
Ongoing supply
Strength 2,5 %Mix: 2 dl Allgrow per plantWatering: 8 L water per plantFrequency: Once weekly
The base dose for normal maintenance.
Against mildew
Foliar spray
Strength 2,5 %Mix: 2.5 dl Allgrow + 10 L waterWatering: Cover the whole canopyFrequency: As needed
A wetting agent extends contact time on the leaf.
Machine application
| Method | Mixture | Note |
|---|---|---|
| Cold fogging | 5 L Allgrow + 20 L water per 1,000 m² | Container concentration for fogging equipment |
| Boost spray | 3 L Allgrow + 10 L water | 2–3 times per season, spring to summer |
Effect
- Healthier foliage
- Reduced mildew risk
- More and stronger flowering shoots
What next?