How Much Light Does Rosemary Need? PPFD & DLI
Prefers dry soil between waterings. Very susceptible to root rot.
- Peak PPFD: 300–500 µmol/m²/s
- Peak DLI: 12–20 mol/m²/d
- Air temperature: 18–24 °C
- Relative humidity: 40–50 %
- VPD target: 0.9–1.3 kPa
- Do not leave the substrate dry for more than 6 days
Targets per growth stage
| Stage | From day | PPFD | DLI | Photoperiod | pH | EC |
|---|---|---|---|---|---|---|
| Seedling | 0 | 100–200 µmol/m²/s | 5–10 mol/m²/d | 14 h | 6–7 | 0.8–1 |
| Mature | 30 | 300–500 µmol/m²/s | 12–20 mol/m²/d | 14 h | 6–7 | 1.2–1.6 |
Watering
Prefers soil to dry between waterings. Highly susceptible to root rot.