Hydroponic Lettuce 2026 | Complete Growing Guide
Grow lettuce hydroponically at home. Complete guide covering best systems, varieties, lighting, and nutrients for fresh salads year-round.
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How fast does hydroponic lettuce grow?
Incredibly fast. Seed to harvest takes 4-5 weeks for baby leaves, 6-8 weeks for full heads. That's 30-50% faster than soil-grown. You can harvest outer leaves continuously for 2-3 months per plant.
What is the best system for hydroponic lettuce?
NFT (Nutrient Film Technique) is ideal for lettuce - shallow roots love the thin nutrient film, and you can grow 30+ heads per meter of channel. Kratky method works brilliantly for beginners with zero electricity.
Do hydroponic lettuces need grow lights?
Yes, especially in winter. Lettuce needs 12-16 hours of light at 200-400 PPFD. A basic 100W LED ($60-80) easily covers 6-12 plants. Window growing produces weak, bitter leaves in winter months.
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