How Much Light Does Phalaenopsis Orchid Need? PPFD & DLI
Water when roots turn silvery.
- Peak PPFD: 95–135 µmol/m²/s
- Peak DLI: 4–6 mol/m²/d
- Air temperature: 20–27 °C
- Relative humidity: 60–80 %
- VPD target: 0.6–0.9 kPa
- Do not leave the substrate dry for more than 7 days
Targets per growth stage
| Stage | From day | PPFD | DLI | Photoperiod | pH | EC |
|---|---|---|---|---|---|---|
| Growth | 0 | 95–135 µmol/m²/s | 4–6 mol/m²/d | 12 h | 5.5–6 | 0.5–0.8 |
| Flowering | 180 | 70–135 µmol/m²/s | 3–6 mol/m²/d | 12 h | 5.5–6 | 0.8–1.2 |
Watering
Water when roots turn silvery. Never let water pool in the crown.
Sources
- Runkle, E. Daily light integral defined. Michigan State University Floriculture — Supports: light targets
Values not covered by a source above are common growing practice, not taken from a primary source.