What Temperature Hurts Tomato Plants

Tomatoes are a popular vegetable that is grown in many parts of the world. They are generally easy to grow and care for, but they are sensitive to changes in temperature. If the temperature drops too low or rises too high, it can cause damage to the plants. In this article, we will explore the temperatures that can harm tomato plants and discuss ways to protect them from extreme weather conditions.

Low Temperatures

Tomatoes are classified as warm-season plants. They thrive in temperatures between 70 to 80 degrees Fahrenheit during the day and 60 to 70 degrees Fahrenheit at night. When the temperatures drop below 55 degrees Fahrenheit, the plants can begin to suffer from cold stress.

When tomato plants are exposed to low temperatures, several things can happen. Firstly, the leaves can begin to turn yellow and wilt. Secondly, the fruit can become discolored and develop black spots. Finally, the plant's growth can become stunted, and it may take longer to produce fruit.

To protect your tomato plants from low temperatures, you can cover them with blankets or burlap sacks. Another option is to move them indoors if possible. If you are growing tomatoes in a greenhouse, investing in a heating system can provide the necessary warmth to keep them healthy.

High Temperatures

While tomatoes prefer warm temperatures, they can be damaged by excessively high temperatures. When the temperature rises above 90 degrees Fahrenheit during the day and 70 degrees Fahrenheit at night, tomato plants can begin to suffer from heat stress.

When tomato plants are exposed to high temperatures, the leaves may start to curl or roll up, and the plants may wilt. The flowers can also drop off, resulting in reduced fruit production. Fruit that does develop may be smaller in size and have a tough texture.

To protect your tomato plants from high temperatures, you can provide them with shade using umbrellas or shade cloth. Providing them with extra water can also help to cool them down. If you are growing tomatoes in a greenhouse, investing in a ventilation system can help to maintain an optimal temperature.

Conclusion

Tomatoes are a delicious and popular vegetable that requires proper care to grow successfully. To protect them from low or high temperatures, it's essential to monitor the weather and take necessary precautions. By following the tips outlined in this article, you can ensure that your tomato plants thrive and produce a plentiful harvest.