What Temperature Will Tomato Plants Die?

Tomatoes are a popular garden crop that requires specific temperature conditions to thrive. While they can tolerate a range of temperatures, they are not invincible. Tomatoes will eventually die if exposed to certain temperatures for an extended period. So, what temperature will cause tomato plants to die?

Temperature Range for Tomato Plants

Tomatoes grow best in temperatures between 65 and 85 degrees Fahrenheit. This range allows them to photosynthesize efficiently and develop strong roots. However, they can thrive in temperatures up to 95 degrees as long as they have adequate water and nutrients. Temperatures below 55 degrees can cause slow growth and poor fruit quality.

Temperature Extremes

While tomato plants can tolerate a range of temperatures, they cannot survive extreme temperatures for very long. Temperatures above 95 degrees can cause fruit to ripen prematurely and become damaged. High temperatures over an extended period can cause leaves to curl and flowers to drop. Extended exposure to temperatures below 50 degrees can cause stunted growth and damage to leaves and stems.

Frost and Freeze Damage

Frost and freeze damage can be fatal to tomato plants. Temperatures below 32 degrees can cause the water inside the plant's cells to freeze, leading to cell damage and death. Frost damage is more likely to occur in the late fall when temperatures drop suddenly, but it can occur in the spring when temperatures fluctuate between warm and cold. If you suspect that your tomato plant has frost or freeze damage, remove any affected leaves or fruit and give the plant time to recover.

Protecting Tomato Plants from Extreme Temperatures

If you live in an area with extreme temperatures, there are several ways to protect your tomato plants. If temperatures are above 95 degrees, make sure your plants are adequately watered and shaded. Consider installing a shade cloth over your garden to provide some protection from the sun. If temperatures drop below 50 degrees, cover your plants with a blanket or plastic sheet to create a mini greenhouse. Make sure to remove the cover during the day to prevent overheating.

In Conclusion

Tomato plants can tolerate a range of temperatures, but extreme temperatures can be fatal. Temperatures above 95 degrees and below 50 degrees can cause damage to leaves, flowers, and fruit. Frost and freeze damage can be fatal to plants, but they can recover if given time. Protect your tomato plants from extreme temperatures by providing shade, water, and covering them when necessary.