Petunias can be grown in the garden or in containers including hanging baskets. Petunias are tolerant of both heat and humidity. They need a sunny spot and grow best with regular watering every three weeks. Petunias need at least six hours of sun but full sun from morning to mid afternoon brings on the best performance from these plants. Petunias are frost sensitive so avoid planting petunias out in the garden until all threat of frost has past.
Petunia Double Cascade