What Temperature is Best for Growing Tomatoes?

When it comes to growing tomatoes, one of the most important factors to consider is temperature. Tomatoes are a warm-season crop, meaning they thrive in warm temperatures and struggle in cold ones. In this article, we’ll discuss the ideal temperature range for growing tomatoes and the impact that temperature can have on tomato plants.

The Ideal Temperature Range for Growing Tomatoes

The ideal temperature range for growing tomatoes is between 70-85°F (21-29°C) during the day and between 60-70°F (15-21°C) at night. Tomatoes can still grow in temperatures outside of this range, but they may experience reduced growth and yield. If temperatures rise above 95°F (35°C) or fall below 50°F (10°C), tomato plants can suffer from heat stress or cold damage respectively.

The Impact of Temperature on Tomato Plants

Temperature can have a significant impact on tomato plants. When temperatures are too low, tomato plants can become stunted and their growth can be slowed. They may also struggle to produce fruit, and the fruit they do produce may be small and underdeveloped. On the other hand, when temperatures are too high, tomato plants can also suffer. High temperatures can lead to sunscald on the fruit, as well as blossom drop - a phenomenon where the flowers fall off the plant before they can develop into fruit.

It’s important to note that while tomatoes prefer warm temperatures, they also need a certain amount of cooling in order to thrive. This is why, even in warm climates, tomato plants often do best when grown in part shade or with some kind of protection from the sun.

How to Keep Tomato Plants at the Right Temperature

There are several things you can do to help keep your tomato plants at the right temperature:

Plant your tomatoes in a spot that gets plenty of sun but also has some shade during the hottest part of the day.

Water your tomatoes regularly, as lack of water can cause stress that makes them more vulnerable to temperature fluctuations.

Use shade cloth or other types of shade structures to protect your tomato plants from too much heat.

Consider using a season extender or other techniques to keep your plants warmer during cooler temperatures, especially during early spring or late fall.

By taking steps to keep your tomato plants at the right temperature range, you can help ensure a healthy, productive harvest.

Conclusion

Tomatoes are a warm-season crop that prefers temperatures between 70-85°F (21-29°C) during the day and 60-70°F (15-21°C) at night. When temperatures fall outside of this range, tomato plants can suffer from heat stress or cold damage, resulting in reduced growth and yield. By taking steps to keep your tomato plants at the right temperature range, including planting in a suitable spot, watering regularly, and using shade structures and season extenders, you can help ensure a healthy, productive harvest of delicious, juicy tomatoes.