Mexican petunia Purple Showers
This Mexico-native evergreen perennial is not a petunia, despite its name. However, it is known for its petunia-like purple flowers that attract bees, butterflies, and hummingbirds. Its leaves are dark green and lance-shaped.
The Mexican petunia (Ruellia brittoniana) is a fast grower, quickly spreading through self-seeding and rhizomes. Because of their fast growth, these plants are considered invasive.1
Common NameMexican petunia, Mexican bluebell, Britton’s petunia Botanical NameRuellia brittoniana or Ruellia simplexFamilyAcanthaceaePlant TypePerennial, rhizomeMature Size 1–4 ft. tall, 1–3 ft. long, 1–3 ft. wideSun ExposureFull, partialSoil TypeLoamy, sandy, moist but well-drainedSoil pHAcidic, neutralBloom TimeSummer, fallFlower ColorPurpleHardiness Zones8–11, USDANative AreaNorth America, South America, Caribbean
Mexican Petunia Care
This hardy plant can be grown almost anywhere, as long as temperatures are warm enough. They are tolerant of heat, humidity, flooding, and droughts, and they can be planted in dry as well as boggy areas. Once established, these plants don’t require much attention beyond the occasional watering and deadheading. Mexican petunias are also disease resistant, though these plants occasionally have problems with spider mites
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