The Q&A Archives: ruellas in Phoenix, az

Question: How big and wide will they grow? I know they do well in the AZ sun. I'm looking at the tall ones rather than the shrubs. Are they perennials? Thanks

Answer: Ruellia brittoniana, or Mexican petunia grows about 4' high and wide. They are perfectly adapted to growing in Phoenix and Home Depot carries lots of them. They are long lived evergreen plants. Enjoy!

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