Grow Lights: Use Timers to Control Photoperiod

November 23, 2018

Simple lamp timers, or more sophisticated digital timers, can be used to turn your grow lamps on and off on a set lighting schedule. Timers make it easy for you to deliver the right duration of light, or photoperiod, to your plants.

PC: Sunlight Supply, Inc.

A quantitative short-day plant may bloom earlier or better if it has longer nights. A quantitative long-day plant may bloom earlier or better when given shorter nights. Both plants will eventually flower, however, even if the photoperiod is not ideal.

Gardening Under Lights Book


Back to top

Tips in your inbox

E-Newsletter

Sign up for my monthly E-Newsletter for botanical business news, horticulture courses, and tidbits for plant and gardening lovers!