What Temperature Will Tomato Plants Freeze?

Tomato plants are a popular choice among gardeners, but they are also sensitive to temperature changes. When the weather turns cold, many gardeners wonder what temperature will cause their tomato plants to freeze. In this article, we will explore the ideal temperature range for tomato plants and how to protect them from frost damage.

Temperature Tolerance of Tomato Plants

Tomato plants are warm-season crops that thrive in temperatures between 70 to 85 degrees Fahrenheit. However, they can tolerate temperatures as low as 55 degrees Fahrenheit without any damage. If the temperature drops below 55 degrees Fahrenheit, the plants may slow down their growth, but they will not suffer any significant harm.

When the temperature drops below 50 degrees Fahrenheit, tomato plants begin to suffer from chilling injury. At this temperature, the plant's growth will be stunted, and the leaves will turn a bluish-green color. If the temperature remains below 50 degrees Fahrenheit for an extended period, the plant's leaves will curl, become brittle, and eventually die.

When the temperature drops below 32 degrees Fahrenheit, tomato plants will start to freeze. At this temperature, the plant's water inside the cells freezes, causing the cell walls to rupture. This leads to irreversible damage, and the plant will eventually die.

Protecting Tomato Plants from Frost Damage

Gardeners can protect their tomato plants from frost damage by taking a few simple measures. Here are some tips to keep in mind:

Monitor the temperature: Keep track of the weather forecast and cover your plants if the temperature is expected to drop below 32 degrees Fahrenheit.

Cover the plants: Use a cloth, blanket, or plastic cover to protect the plants from frost. Make sure the cover covers the entire plant, right down to the ground.

Water the plants: Water your plants thoroughly before covering them. The water will act as insulation and help protect the plants from the cold.

Remove the cover: Once the temperature rises above freezing, remove the cover so that the plants can get enough sunlight and air circulation.

These measures will help protect your tomato plants from frost damage and ensure that they continue to thrive even in cold weather.

Conclusion

Tomato plants are sensitive to temperature changes, and they can suffer from frost damage if the temperature drops below 32 degrees Fahrenheit. However, gardeners can protect their plants from frost damage by monitoring the temperature, covering the plants, watering them thoroughly, and removing the cover once the temperature rises above freezing. By taking these simple measures, gardeners can enjoy a healthy crop of tomatoes all year round!