Grow Light Schedule for Monstera and Pothos: How Long Should Lights Stay On?
Quick answer: A consistent daytime lighting window is better than random use. Many home growers start around 10–12 hours of supplemental light and adjust based on natural light, fixture intensity, distance, and plant response.
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Tools that simplify the schedule
- Kasa smart plug (paid link)
- SANSI 36W grow light bulb (paid link)
- Barrina T5 grow lights (paid link)
Why duration is not the only variable
A weak light used for 12 hours is not the same as a stronger light used for 12 hours. Distance and intensity change the total light the plant receives.
For Monstera
Watch new leaf size, spacing between leaves, and fenestration development. If growth remains stretched, the plant may need more usable light.
For pothos
Leggy vines and wider spacing between leaves often indicate the plant would benefit from stronger or better-positioned light.
FAQ
Should grow lights stay on at night?
No. Give plants a normal dark period.
Can a timer improve growth?
The timer itself does not increase light, but it makes the schedule consistent.