Optimal Daily Light Duration for Indoor Plants Under Artificial Lighting

Optimal Daily Light Duration for Indoor Plants Under Artificial Lighting

Photoperiod needs vary by plant type and growth stage.

General Guidelines

Adjustment Protocol

1. Start at midpoint (e.g., 16 hrs for herbs).
2. Observe 2 weeks: stretching/pale = more light; bleaching/brown tips = less.
3. Adjust ±1 hr increments.
4. Use timer for consistency.

Seasonal

Winter: can reduce 1–2 hrs for foliage. Herbs/veggies keep long days year-round for production.

Plants tell you—watch and adjust.