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The Plant Guide

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Mexican petunia

Ruellia brittoniana 'Purple Showers'

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This three-foot-tall evergreen shrub bears many tubular, blue or purple, petunia-like flowers on dark stems over a long period. Each flower lasts for just one day. It is a fast grower that may self-seed aggressively. Use in a border, container, or at waterside. Can be grown as an annual in cooler areas.

Noteworthy CharacteristicsPetunia-like flowers from spring to frost. Native to Mexico and the southwestern U.S.             

CareRuellia needs a warm climate. Site in partial shade and fertile, consistently moist, but well-drained soil.

PropagationSeed or softwood cuttings in spring. Self-sows aggressively if conditions are right.

ProblemsNothing serious.

  • Genus : Ruellia
  • Plant Height : 1 to 3 feet
  • Plant Width : 1 to 3 feet
  • Zones : 10, 11, 8, 9
  • Uses : Containers
  • Bloom Time : Early Fall, Early Summer, Late Spring, Late Summer, Summer
  • Growth Rate : Fast
  • Light : Full Sun to Partial Shade
  • Moisture : Medium to Wet
  • Maintenance : Moderate
  • Plant Type : Perennials
  • Plant Seasonal Interest : Spring Interest

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