![]() So, tomatoes can be injured by temperatures below 43☏ (6☌). Less than two hours of exposure are sufficient to cause damage, but more than eight hours at moderate temperatures are required for recovery.” Mineral Nutrition of Plants: Principles and Perspectives, by Emanuel Epstein and Arnold J. “Chilling the roots of the cultivated tomato damages ammonium influx, but not nitrate uptake or ammonium efflux (Bloom et al. The roots of cultivated tomato cease to grow at 10 degrees Celsius, and growth is slow to recover after rewarming (Scott and Jones 1986).” Mineral Nutrition of Plants: Principles and Perspectives, by Emanuel Epstein and Arnold J. “Chiling impedes root growth of chilling-sensitive species. Temperature below 10 degrees Celsius severely inhibit tomato growth and development at all life stages, and those below 6 degrees Celsius inflict significant injury (Geisenberg and Stewart 1986).” Mineral Nutrition of Plants: Principles and Perspectives, by Emanuel Epstein and Arnold J. “The cultivated tomato, Lycopersicon esculentum, is a classic example of a chilling-sensitive plant. Here are some helpful excerpts from the text “Mineral Nutrition of Plants” about the impact of cold temperatures on garden tomatoes: ![]() ![]() Growing tomatoes is done best in the heat and detest cold temperatures. Even a light frost date can mean the end for a tomato seedling. So how cold is TOO cold for planting and transplanting tomatoes? Below-freezing temperatures are too cold for growing tomatoes. The general advice is that tomatoes don’t like the cold and you should wait until the cool temperatures of early spring have passed before thinking about transplanting tomato seedlings. Transplanting Seedlings for Specific Varieties Wait until cold temperatures have passedĮvery new gardener asks about the timeline of transplanting tomato seedlings into the outdoor garden.
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