Wikipedia on grow lights:
"A plant's specific needs determine which lighting is most appropriate
for optimum growth. If a plant does not get enough light, it will not
grow, regardless of other conditions."
"Grow lights usage is dependent on the plant's phase of growth. Generally
speaking, during the seedling/clone phase, plants should receive 16+
hours on, 8- hours off. The vegetative phase typically requires 18 hours
on, and 6 hours off. During the final, flower stage of growth, keeping
grow lights on for 12 hours on and 12 hours off is recommended."
"In addition, many plants also require both dark and light periods, an effect known as photoperiodism, to trigger flowering. Therefore, lights may be turned on or off at set times.
The optimum photo/dark period ratio depends on the species and variety
of plant, as some prefer long days and short nights and others prefer
the opposite or intermediate "day lengths"."
"However, it is the number of hours of darkness that affects a plant’s response to day length. In general, a “short-day” is one in which the photoperiod is no more
than 12 hours. A “long-day” is one in which the photoperiod is no less
than 14 hours. Short-day plants are those that flower when the day
length is less than a critical duration. Long-day plants are those that
only flower when the photoperiod is greater than a critical duration.
Day-neutral plants are those that flower regardless of photoperiod."
my research on the internet says that my plants are short day plants. they should be flowering in the autumn. except monilaria which is notoriously difficult to flower although easy to grow.
the label on the plant light box said that the light should affect photosynthesis.
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