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Yes, you can grow lettuceYes, you can grow lettuce inside year-round, though we'd grow outside when you can. The main requirement is sunlight. Place pots in a bright, sunny south-facing window. In many regions without strong winter sunlight, you'll need to supplement with a combination warm-white/cool-white fluorescent fixture. You'll know if the light is insufficient light because the plants will get leggy and tall.

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