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 ...

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 ...

A: A broadleafed weedkiller (containing 2,4-D) will kill a certain portion of them, but at some point, you may just decide to rototill deeply and rake out as much of the root system as you can.

DEAR NEIL: I hope my photo is more than a thumbnail so you can see it. It’s of my Mexican petunia that I planted because I see it growing at a local restaurant where it is thriving. My plant, however, ...