Germination Temperatures

Seed Germination Temperature Table

VegetableMinimumOptimumMaximum
Lettuce32°F (0°C)75°F (23.9°C)75°F (23.9°C)
Onion32°F (0°C)80°F (26.7°C)95°F (35°C)
Parsnip32°F (0°C)70°F (21.1°C)85°F (29.4°C)
Spinach32°F (0°C)70°F (21.1°C)75°F (23.9°C)
Beet40°F (4.4°C)85°F (29.4°C)95°F (35°C)
Broccoli40°F (4.4°C)85°F (29.4°C)95°F (35°C)
Brussels sprouts40°F (4.4°C)75°F (23.9°C)85°F (29.4°C)
Cabbage40°F (4.4°C)85°F (29.4°C)95°F (35°C)
Carrot40°F (4.4°C)80°F (26.7°C)95°F (35°C)
Cauliflower40°F (4.4°C)80°F (26.7°C)95°F (35°C)
Celery40°F (4.4°C)70°F (21.1°C)75°F (23.9°C)
Chard, swiss40°F (4.4°C)85°F (29.4°C)95°F (35°C)
Eggplant40°F (4.4°C)70°F (21.1°C)85°F (29.4°C)
Parsley40°F (4.4°C)80°F (26.74°C)95°F (35°C)
Peas40°F (4.4°C)75°F (23.9°C)85°F (29.4°C)
Radish40°F (4.4°C)85°F (29.4°C)95°F (35°C)
Turnip40°F (4.4°C)85°F (29.4°C)105°F (40.6°C)
Asparagus50°F (10°C)75°F (23.9°C)95°F (35°C)
Corn50°F (10°C)85°F (29.4°C)105°F (40.6°C)
Tomato50°F (10°C)85°F (29.4°C)95°F (35°C)
Bean, pole60°F (15.6°C)85°F (29.4°C)95°F (35°C)
Beans Bush60°F (15.6°C)80°F (26.2°C)85°F (29.4°C)
Cantaloupe60°F (15.6°C)95°F (35°C)105°F (40.6°C)
Cucumber60°F (15.6°C)95°F (35°C)105°F (40.6°C)
Okra60°F (15.6°C)95°F (35°C)105°F (40.6°C)
Pepper60°F (15.6°C)85°F (29.4°C)95°F (35°C)
Pumpkin60°F (15.6°C)95°F (35°C)105°F (40.6°C)
Squash60°F (15.6°C)95°F (35°C)105°F (40.6°C)
Watermelon60°F (15.6°C)95°F (35°C)105°F (40.6°C)
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