How Cold of Weather Can Petunias Take?

Petunias thrive in pots; bring them indoors during cold weather.

Petunias are one of the hardiest plants in hot-weather conditions, according to the American Horticultural Society. However, petunias freeze to death notoriously fast during cold weather.

Types

Common petunias die at about 30 degrees F. A few cross-bred and specialty petunia varieties die at 35 degrees F If your garden does not feature common petunias, its best to play it safe and assume the plants will freeze at 35 degrees.

Significance

Petunias are annuals, so they naturally die after one year. However, it's still important to prevent freezing, because petunias germinate and propagate seeds into your garden during their natural death cycle.

Prevention

Petunias have a simple, shallow root system, ideal for potting. If you expect inclement weather, dig up your petunias and place them in indoor pots.

References

• "American Horticultural Society Great Plant Guide"; Tracie Lee; 2001
• "Simon and Schuster's Complete Guide to Plants and Flowers"; Frances Perry; 1976