this post was submitted on 29 Sep 2023
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Houseplants

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Light sources for winter (lemmy.world)
submitted 1 year ago by [email protected] to c/[email protected]
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Hi folks. I was wondering if anyone had recommendations for indoor light sources. I live in Colorado and we’re going to start getting snow here before much longer so I’ll have to haul my plants in. I was thinking about using a flexible LED strip for lighting over the winter. I just moved into this apartment a couple months ago and exactly one room gets sunlight on one wall from a west facing window so some supplemental light might be needed for my growing succulent collection.

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[–] [email protected] 2 points 1 year ago* (last edited 1 year ago)

As the plants look green they reflect green light. So when being efficient you’re better off not producing that, and as some plants like the upper parts of the spectrum red is good. Also blue is good as it’s high energy and not green. For lettuce they wants lot of photons. This is measured in MOL - https://hortamericas.com/blog/news/monitoring-is-crucial-for-growing-lettuce-and-leafy-greens-year-round/

So you do not really care about watt, but photons. This is why HPS was the shit up until led arrived. You needed many photons and HPS had more photons per watt than “normal” household lamps.