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Seed Germination Timer

Expected germination days by temperature

Seed Germination Timer

Sow Date
Plant

Seed germination time varies by species and soil temperature. A germination calculator estimates when to expect seedlings, helping plan planting schedules for successive harvests.

  1. 1Germination days depend on species and soil temperature
  2. 2Warmer soil (within range) speeds germination
  3. 3Heat mats help cold-sensitive species like peppers
  4. 4After germination, seedlings need light within 12 hours
Tomatoes sown 10 March, soil 22°C=Expected germination: 15–20 March (5–10 days)
VegetableDaysOptimal soil temp
Tomatoes5–1021–27°C
Peppers10–2124–29°C
Lettuce3–715–21°C
Carrots7–2110–24°C
Cucumber3–721–29°C
Parsley14–2818–24°C
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