TIL that lettuce can grow with artificial sunlight (specifically red/blue LED lights) (nowiknow.com)

submitted 7 months ago* (last edited 7 months ago) by Potatos_are_not_friends@lemmy.world to c/til@lemmy.ca

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As Cary Mitchell, a horticulturist at Purdue University told NPR, in the 1990s, “research showed that you could grow lettuce in just red light. If you add a little bit of blue, it grows better.”

If you’re interested in why, a redditor named SuperAngryGuy wrote up a detailed, well-sourced analysis about three years ago, here

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[-] Aecosthedark@lemmy.world 4 points 7 months ago

I dont know about need, but a lot of weed farmers feel that plants do better with a rest/dark period. I haven't noticed a difference but give them a rest period anyway as its "natural"

[-] Mongostein@lemmy.ca 3 points 7 months ago* (last edited 7 months ago)

I tried growing a plant in a closet once. The instructions I was given were to leave the light on 24/7 until it was as big as I wanted, then to switch to a 12 on/ 12 off cycle to get it to bud.

I didn’t try very hard on it and ended up with a quarter of mid weed after like 6 months

[-] Spacehooks@reddthat.com 2 points 7 months ago

Is that alot?

[-] Mongostein@lemmy.ca 3 points 7 months ago* (last edited 7 months ago)

7g, so not really

this post was submitted on 18 Apr 2024

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