How long should indoor plants be artificially lit?
Plants need a dark period to rest and prevent metabolic fatigue. Therefore, grow lights should only be run 12-15 hours maximum per day—typically from 7 AM to 8 or 9 PM (to mimic light conditions in tropical regions). The rest of the time, they should be in darkness, or near darkness.
If security lighting is required in the area of the LiveWall, it should be of very low intensity and not directed toward the plants.
Do not run Norb® bulbs (or any bulb labeled as supporting plant growth) on the green wall for more than 15 hours per day.
We recommend running the lighting for the living walls on a dedicated outlet programmed to run for 14 hours per day.