Petunias are native to South America, chiefly to Brazil and Argentina. Shortly after they were introduced into cultivation, they rapidly became the subject of selective breeding. Consequently, there are now countless cultivars withdiffering not only in colour, but also in size and shape. It is interesting, however, that petunia-lovers tend to prefer forms with simple that are most like the type species.
Petunias are typical window-box, balcony andplants. They are , and cultivation ends when the flowers have faded. They are not usually grown from by amateurs because it is impossible to provide them with sufficient light. Also, pricking them out is a lengthy task. It is better to buy from a nursery. Petunias are attractive only in full sun, and they must be watered liberally; otherwise the quickly droop and the flowers wilt.