Lettuce Seed — Certified
Certified butterhead seed for production cycles.
// compliance status
Certified seed lot; standard handling.
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// trait & germination sheet
- Use
- production
- Crop family
- Asteraceae
- Climate zone
- Temperate
- Light requirement
- medium
- Growth medium
- soil, hydroponic
- Germination
- 7 days
- Yield note
- ~11.7 kg/m²/yr in CEA
- Provenance
- Certified lot CL-204
Stacked systems can produce many times more per m² than open field — leafy greens commonly cited at up to ~10×, with controlled-environment facilities reporting on the order of ~11.7 kg/m²/yr. Extreme multiples are best-case, not typical.
Source: CEA facility reporting, 2025–2026· figures vary by crop, system & operator; as of 2026
Most hydroponic crops sit around pH 5.5–6.5, with EC varying by crop (leafy greens lower, fruiting crops higher). VPD governs transpiration and is a primary climate-control target.
Source: hydroponic nutrient management, 2025–2026· figures vary by crop, system & operator; as of 2026