Can Tomato Plants Survive 39 Degrees?

Tomato plants are a popular addition to home gardens, as they are relatively easy to grow and yield delicious results. However, these plants are susceptible to a variety of environmental factors that can affect their growth and survival. One of the most pressing concerns for tomato growers is extreme temperatures.

The Effects of High Temperatures on Tomato Plants

Tomato plants thrive in temperatures between 70 and 80 degrees Fahrenheit. When temperatures rise above this range, tomato plants can become stressed and struggle to survive. In particularly hot weather, tomato plants can experience a variety of negative effects:

Reduced growth: High temperatures can cause tomato plants to slow their growth, meaning they may take longer to ripen.

Wilting: As temperatures rise, tomato plants may struggle to retain moisture, leading to the wilting of leaves and stems.

Blossom drop: Excessive heat can cause tomato plants to drop blossoms, meaning they will produce fewer fruits.

Poor fruit quality: Even if the plants do produce fruit in hot weather, the extreme temperatures can result in lower quality and smaller fruits.

Can Tomato Plants Survive 39 Degrees?

While tomato plants prefer temperatures between 70 and 80 degrees Fahrenheit, they can withstand temperatures up to approximately 95 degrees Fahrenheit for short periods of time. However, sustained temperatures of 90 degrees or higher can be deadly for tomato plants.

At 39 degrees Celsius (102.2 degrees Fahrenheit), tomato plants are at a high risk of stress and damage. If left in these temperatures for too long, the plants may not survive. However, there are some measures tomato growers can take to help their plants survive in hot weather:

Water regularly: As mentioned, one of the biggest issues tomato plants face in hot weather is the retention of moisture. To combat this, it is essential to water tomato plants regularly, ensuring the soil stays moist.

Provide shade: When temperatures are particularly high, tomato plants may benefit from some protection from direct sunlight. Using shade cloth or strategically placed umbrellas can help to shield plants from the hottest rays of the sun.

Ensure good air circulation: Hot weather can also impact the air quality around tomato plants. To combat this, ensure good air circulation by spacing plants apart and using fans to keep the air moving.

Use mulch: By applying a layer of mulch around the base of tomato plants, you can better regulate soil temperature and moisture levels, helping plants to survive even in extreme heat.

In Conclusion

While sustained temperatures of 39 degrees Celsius can be deadly for tomato plants, under the right circumstances, these plants can survive in hot weather. By taking the right precautions and implementing measures like regular watering, shade, and good air circulation, tomato growers can help their plants thrive even in the hottest conditions.