At What Temperature Should I Cover My Tomato Plants - Web remove coverings in the morning. Web tomato plants can tolerate temperatures above freezing (over 32 degrees fahrenheit, or 0 degrees celsius). Web the optimal temperature range for growing healthy tomatoes is between 70°f (21°c) and 85°f (29°c). Temperatures between 38ºf and 55ºf won't kill tomato plants, but keeping them. Web tomato seeds won't germinate when the soil temperature is below 50 degrees fahrenheit.
Web tomato plants can tolerate temperatures above freezing (over 32 degrees fahrenheit, or 0 degrees celsius). Web tomato seeds won't germinate when the soil temperature is below 50 degrees fahrenheit. Web the optimal temperature range for growing healthy tomatoes is between 70°f (21°c) and 85°f (29°c). Web remove coverings in the morning. Temperatures between 38ºf and 55ºf won't kill tomato plants, but keeping them.