Petunias are one of the most popular flowers, often grown as annuals. They are tender perennials in Zones 9 to 11.
They are divided into two different groups:
- Grandiflora petunias have very large flowers and are best grown in containers or hanging baskets (because they are more susceptible to rain damage).
- Multiflora petunias have smaller, but more abundant flowers and are ideal for summer bedding or in a mixed border (because they are more tolerant to wet weather).