Related: 20 Impossible-to-Kill Outdoor Plants Care and Growing Conditions. Mexican petunias grow quickly and easily in most climates, with their main requirement being warm temperatures.

Mexican petunias are known for their petunia-like, purple, trumpet-shaped flowers that last about a day but produce new blooms daily. They do not have a strong aroma. How to Encourage More Blooms ...

These pretty, purple perennials are resilient and cold-hardy. Somnuk Krobkum/Getty Images Despite their name, Mexican petunias are actually not petunias. Although they resemble petunias with their ...

Question: I have a Mexican petunia (Ruellia) that is about 4 years old. In 2013 the freeze caused all of the stems to die back. I cut them all off at ground level and the plant grew back nicely ...

Petunias are one of the easiest flowers to grow for season-long color. They’re versatile annuals, available in a variety of colors ranging from pure white to hot pink and everything in between ...

Garden columnist Dan Gill answers readers' questions each week. To send a question, email Gill at [email protected]. I’m having an odd problem with my Mexican petunia plants. Nothing seems ...