What hybrid species is represented by Petunia x hybrida?

Petunia x hybrida refers specifically to a hybrid species of the petunia plant. This designation indicates that the plant is not a single species but rather a hybrid developed from various species of the petunia, primarily from species such as Petunia axillaris and Petunia integrifolia.

This hybridization has resulted in the development of numerous cultivars that are widely cultivated for their vibrant flowers and diversity in color, size, and growth habits. Petunia x hybrida is commonly used in gardens and landscapes due to its ability to bloom profusely throughout the growing season.

The other choices, while common garden plants, do not relate directly to Petunia x hybrida. Pansies, marigolds, and impatiens are separate species or hybrids in their own right and are not connected to the petunia family, which solidifies Petunia x hybrida as the correct identification of this particular hybrid species.