These pretty, purple perennials are resilient and cold-hardy. Mexican petunias are fast-growing plants native to warm parts of South America and Mexico, but they can tolerate cool temperatures in ...

These pretty, purple perennials are resilient and cold-hardy.

The Mexican petunia or Ruellia simplex is a shrub boasting a profusion of Petunia-like, vibrant lavender blue flowers, two inches across, from summer to fall. Born solitary or in clusters at the tips ...

Q: We have Mexican petunias, and all have suffered frost damage. How far should we prune them back? A: Contain Mexican petunia in a localized area, so it doesn’t spread. Cut it back close to the ...

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 to ...

Add Yahoo as a preferred source to see more of our stories on Google. A woman tending to her garden in the summer heat - Kathrin Ziegler/Getty Images Worried that it's too hot or too late in the ...

Since there was no newsletter last week, here are two weeks of mystery plants: Mexican Petunia --Ruellia simplex is a perennial plant that takes care of itself and blooms all summer long.

Machu Morado is one of the most intriguing new plants in both name and performance. In reality, it is a dream come true. First it is a Mexican petunia or ruellia, the gregarious “Uncle Buck” of the ...