Soil Temperatures for Vegetable Seed Germination
To use: Insert thermometer a minimum of 2 to 3 inches. Check the temperature after approximately 2 minutes. Soil temperatures for Vegetable seed germination should be consistent for several days before seeds are sown to ensure that the seeds are being exposed to optimal temperatures for germination.
| Minimum | |||||||
| 32°F | 40°F | 50°F | 60°F | ||||
| Endive Lettuce Onion ParsnipSpinach |
| Asparagus Sweet Corn Tomato |
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Optimum | ||||||
| 70°F | 75°F | 80°F | 85°F | 95°F | ||
| Celery Parsnip Spinach | Asparagus Endive Lettuce Pea | Bean, Lima Carrot Cauliflower Onion Parsley |
| Cucumber Muskmelon Okra Pumpkin SquashWatermelon | ||
Maximum | |||||||
| 75°F | 85°F | 95°F | 105°F | ||||
| Celery Endive Lettuce Spinach | Beans, Lima Parsnip Pea |
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