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Q.Starting Columbine perennials from seed with a grow light, do I leave the light on 24/7?

Zone 4 | Anonymous added on January 8, 2020 | Answered

When starting Columbine perennials from seed indoors with a grow light, do I leave the light on 24/7 or turn off at night or periodically?

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Certified GKH Gardening Expert
Answered on January 9, 2020

Generally, 12 hours per day is plenty. You can use a timer or turn them off manually every day.


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