Light cycles for cannabis: photoperiodic varieties need 12/12 to flower, autoflowers bloom on 18/6 or 20/4 — all differences and timing recommendations.
Photoperiodic varieties: 18/6 or 24/0 vegetative, 12/12 flowering induction. Autoflower: Constant 20/4 or 18/6 for maximum yield. Avoid light interruption during the dark phase - even 1 lux can disrupt flowering. Timer precision important: ±15 minutes tolerance. Moon phase influence not scientifically proven.
Autoflowering strains generally require 18–24 hours of light per day to achieve optimal growth and a good harvest.
Photoperiodic varieties require 18 hours of light and 6 hours of darkness during the vegetative phase, while they should be switched to 12 hours of light and 12 hours of darkness during the flowering phase.
Yes, autoflowering strains can be grown under the same light cycle as photoperiod plants, but they benefit most from a constant light cycle of 18–24 hours.