Temperatures for Seed Germination




A compact summary of temperatures for seed germination.

Plant Minimum Optimal Maximum
Kale 50 ℉ / 10˚C 90 ℉ / 32˚C 100 ℉ / 37˚C
Watermelon 71 ℉ / 21˚C 90 ℉ / 32˚C 100 ℉ / 38˚C
Corn 55 ℉ / 12˚C 95 ℉ / 35˚C 100 ℉ / 38˚C
Squash 70 ℉ / 21˚C 95 ℉ / 35˚C 100 ℉ / 38˚C
Turnip 59 ℉ / 15˚C 86 ℉ / 30˚C 100 ℉ / 38˚C
Parsnip 50 ℉ / 10˚C 62 ℉ / 17˚C 68 ℉ / 20˚C
Lettuce 44 ℉ / 7˚C 64 ℉ / 18˚C 73 ℉ / 23˚C
Celery 59 ℉ / 15˚C 68 ℉ / 20˚C 75 ℉ / 24˚C
Spinach 44 ℉ / 7˚C 75 ℉ / 23˚C 80 ℉ / 26˚C
Peas 59 ℉ / 15˚C 73 ℉ / 23˚C 80 ℉ / 27˚C
Beetroot 46 ℉ / 8 ˚C 82 ℉ / 28 ˚C 86 ℉ / 30 ˚C
Broccoli 44 ℉ / 7˚C 77 ℉ / 25˚C 86 ℉ / 30˚C
Carrot 44 ℉ / 7˚C 77 ℉ / 25˚C 86 ℉ / 30˚C
Cauliflower 46 ℉ / 8˚C 73 ℉ / 23˚C 86 ℉ / 30˚C
Leek 46 ℉ / 8˚C 77 ℉ / 25˚C 86 ℉ / 30˚C
Parsley 44 ℉ / 7˚C 73 ℉ / 23˚C 86 ℉ / 30˚C
Radish 44 ℉ / 7˚C 82 ℉ / 28˚C 86 ℉ / 30˚C
Onion 50 ℉ / 10˚C 73 ℉ / 23˚C 91 ℉ / 33˚C
Tomato 50 ℉ / 10˚C 80 ℉ / 27˚C 91 ℉ / 33˚C
Bean 70 ℉ / 21˚C 80 ℉ / 27˚C 95 ℉ / 35˚C
Brussels Sprouts 42 ℉ / 6˚C 86 ℉ / 30˚C 95 ℉ / 35˚C
Cabbage 50 ℉ / 10˚C 86 ℉ / 30˚C 95 ℉ / 35˚C
Cucumber 68 ℉ / 20˚C 86 ℉ / 30˚C 95 ℉ / 35˚C
Swiss Chard 55 ℉ / 12˚C 85 ℉ / 30˚C 95 ℉ / 35˚C
Pepper 64 ℉ / 18˚C 86 ℉ / 30˚C 98 ℉ / 37˚C




Last update: 2018-04-07 (Y,M,D)

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2018-03-27 Temperatures for Seed Germination
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