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Optimal Temperature for Seed Germination Featured

  • June 10, 2020
  • Written by Audra Cooper

Soil temperature is critical to the success of germination. This chart offers approximate temperatures to ensure germination when planting. Seeds may still germinate at temperatures outside of the suggested range, however this may negatively impact its growth, resistance to disease, harvest timeline, etc. Have any questions? Reach out to our Garden Department at 1-306-931-1982 for expert advice!

SEED TYPE ºC ºF
Artichoke 21-24 70-75
Asparagus 15-30 60-85
Basil 18-30 65-85
Bean 15-30 60-85
Beet 10-30 50-85
Broccoli 10-30 50-85
Cabbage 10-35 45-95
Carrot 10-30 45-85
Cauliflower 10-30 45-85
Chard 10-30 50-85
Chervil 15-20 60-65
Chinese Cabbage 10-30 50-80
Chives 15-20 60-70
Cilantro 15-20 55-70
Corn 15-35 60-95
Cucumber 15-35 60-95
Dill 15-20 60-70
Eggplant  24-30 75-90
Endive 15-20 55-70
Fennel 15-20 60-70
Kale 5-25 45-75
Kohlrabi 5-35 40-90
Lavender 18-21 65-70
Leek 20-25 65-75
Lettuce 5-25 40-80
Marjoram 15-20 60-70
Melon 25-35 75-90
Mint 20-25 65-75
Okra 20-35 70-90
Onion 10-35 50-95
Oregano 20-25 72-77
Parsley 10-30 50-85
Parsnip 10-20 50-70
Peas 5-24 40-75
Pepper 15-35 60-95
Pumpkin 20-30 70-90
Radish 5-30 45-90
Rosemary 25-30 80-90
Rutabaga 5-30 45-85
Sage 15-20 60-70
Spinach 10-25 50-75
Squash 20-35 70-95
Thyme 15-20 60-70
Tomato 15-30 60-85
Turnip 15-40 60-105
Watermelon 20-35 70-95
Zucchini 20-35 70-95