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Don’t guess, test soil temperatures before planting vegetables

It is easy to get excited about planting vegetable seeds and transplants in the vegetable garden, even when it is too early to plant. Planting in soil temperatures that are too cool will lead to poor seed germination and stunted plants that will not produce to their full potential during the growing season. For the sake of simplicity, there are a few vegetable crop groupings that use similar soil temperatures. According to Oregon State University Extension, here are those groupings:

  • 40 Degree Fahrenheit Plant Grouping — These vegetable crops include arugula, fava beans, kale, lettuce, pak choi, parsnips, peas, radicchio, radishes and spinach seed.
  • 50 Degree Fahrenheit Plant Grouping — These vegetable crops include Chinese cabbage, leeks, onions, Swiss chard, and turnips.
  • 60 Degree Fahrenheit Plant Grouping — These vegetable crops include beans, beets, broccoli, Brussels sprouts, cabbage, carrots and cauliflower. Do be careful with planting beans since they are prone to be damaged by a freeze.
  • 70 Degree Fahrenheit Plant Grouping — These vegetable crops include tomatoes, eggplants, peppers, cucumbers, squash, corn and melons. These crops are very prone to damage from a light freeze as transplants, and may take a while to germinate even when the soil is at this temperature threshold.

By AgReads®

AgTech and FoodTech news platform

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