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Gardening Know How Questions & Answers - https://questions.gardeningknowhow.comWhen 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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1 Comment To "Starting Columbine perennials from seed with a grow light, do I leave the light on 24/7?"
#1 Comment By GKH_Susan On 01/09/2020 @ 2:16 am
Generally, 12 hours per day is plenty. You can use a timer or turn them off manually every day.
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