1: "Choose hardy petunia varieties for winter health."

2: "Protect petunias from frost with insulation."

3: "Water petunias sparingly during winter to prevent root rot."

4: "Avoid fertilizing petunias in the winter months."

5: "Prune dead or damaged branches for petunia health."

6: "Keep petunias in a sunny spot for winter warmth."

7: "Monitor soil moisture levels for overwintering success."

8: "Consider bringing petunias indoors during extreme cold snaps."

9: "Check for pests and diseases regularly when overwintering petunias."