Most popular modern petunia are hybrids of two primary species, and a few others. They classify collectively and simply as Petunia X hybrida. Although popular as warm season annuals, some can be short term perennials. They are only uncommon as such because they get shabby through winter. Yet, with a bit of trimming, they can regenerate for spring.

Petunia are impressively diverse. Their floral color range lacks merely a few colors. Also, flowers can exhibit spots, speckles, stripes, blotches, haloes or variegation. Flowers can be quite small, or as broad as four inches. Some are mildly fragrant. Some are quite frilly with double bloom. Cascading types can sprawl three feet while most are more compact.

Petunia are perhaps the most popular warm season annual. They can bloom from spring until frost, though they can get scrawny after a month or so. Trimming of lanky stems can promote more compact growth. Deadheading might promote fuller bloom for some types. Petunia enjoy sunny exposure, regular watering and rich soil. They perform well in pots. Cascading varieties are splendid for hanging pots and high planters.