How Much Light Does Dill Need? PPFD & DLI
Grew 241 % more under high light in a hydroponic trial, but extra light only helps when the air is warm (above ~18 °C).
- Peak PPFD: 210–295 µmol/m²/s
- Peak DLI: 12–17 mol/m²/d
- Air temperature: 18–26 °C
- Relative humidity: 45–65 %
- VPD target: 0.8–1.2 kPa
- Do not leave the substrate dry for more than 3 days
Targets per growth stage
| Stage | From day | PPFD | DLI | Photoperiod | pH | EC |
|---|---|---|---|---|---|---|
| Seedling | 0 | 100–200 µmol/m²/s | 6–12 mol/m²/d | 16 h | 5.8–6.4 | 1–1.4 |
| Mature | 35 | 210–295 µmol/m²/s | 12–17 mol/m²/d | 16 h | 5.8–6.4 | 1–2 |
Watering
Water when the surface dries; the taproot dislikes being moved, so sow it where it will stay.