Q.Petunias
How sensitive are petunias to freezing temps?
Downtoearthdigs
Answered on March 30, 2017
Most Petunias can tolerate a light frost, a freeze will kill the Petunia.
Once Petunias have suffered cold damage, they will likely not survive.
Their base temperature is considered 39 degrees F.
https://www.gardeningknowhow.com/ornamental/flowers/petunia/petunia-care.htm
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