What Temperature Should I Cover My Tomato Plants?

Tomato plants are sensitive to temperature fluctuations, and extreme weather conditions such as frost, heavy rain, and high winds can cause damage to the plant and reduce its yield. One way to protect tomato plants from inclement weather is to cover them. But what temperature should you cover your tomato plants to keep them healthy and strong?

Frost Protection

Frost is one of the most damaging weather conditions for tomato plants. When temperatures dip below freezing, the moisture in the plant's cells freeze, causing the cell walls to burst and damage the plant tissue. To protect tomato plants from frost, cover them when temperatures are forecasted to drop below 32°F (0°C).

Cover tomato plants with blankets or tarps, making sure no part of the plant is exposed to the cold air. Remember to remove the covers during the day to allow the plants to get sunlight and air circulation.

Heavy Rain Protection

Heavy rain can cause the soil around the tomato plants to become waterlogged, causing the roots to suffocate and the plant to wilt. In addition, heavy rain can also cause the fruit to split or develop disease. To protect the plants from heavy rain, cover them when there is a forecast of heavy rain or if the soil is already saturated with water.

The best way to cover tomato plants during heavy rain is to use plastic sheeting or a waterproof tarp. Be sure to secure the covers tightly to avoid damage from winds.

Wind Protection

High winds can cause tomato plants to break, fall over, or lose their fruit. To protect tomato plants from wind damage, cover them when winds are gusting above 20 miles per hour. You can use stakes or cages to support the plants if the wind is not too strong.

If you need to cover the plants during high winds, use a lightweight fabric that will not be damaged by wind gusts. Secure the covers tightly to avoid them ripping or blowing away.

Conclusion

Knowing what temperature to cover your tomato plants is crucial to keep them healthy and productive. By following these basic guidelines, you can protect your tomato plants from the damaging effects of frost, heavy rain, and high winds. Remember to remove the covers during the day to allow the plants to get sunlight and airflow. With proper care and protection, your tomato plants will thrive and provide you with a bountiful harvest.