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Acanthaceae
Mexican Petunia
Ruellia simplex
Surprise, daily renewal, tropical resilience.
- Family
- Acanthaceae
- Genus
- Ruellia
- Native to
- Mexico, Caribbean
- Bloom season
- Spring, Summer, Fall
- Type
- Tender perennial
- Height
- 60–120 cm (2–4 ft)
- Sunlight
- Full sun to part shade
- Soil
- Average, moist
- Water
- Moderate
- Hardiness
- 8–11
- Lifespan
- Long-lived perennial in warm climates
Did you know
- Mexican petunia isn't actually a true petunia—it's an acanthus relative, but its flowers look so similar that it's been called 'Mexican petunia' for over 100 years.
- Each bloom lasts only a single day, opening at dawn and falling by sunset—but a mature plant produces fresh flowers daily for 6–7 months straight.
- It's one of the most drought-tolerant and tough flowering plants for the deep South—it survives weeks without water and shrugs off the worst summer heat.
- In Florida and Texas, Mexican petunia is considered an invasive species—it spreads aggressively along waterways and crowds out native wetland plants, but tightly compact 'Purple Showers' cultivars are sterile and safe.
- The flowers are pollinated by butterflies and the seed pods explosively eject seeds when ripe—a single mature plant can fling seeds up to 6 feet in all directions.
Color meanings
0
surprise
1
daily renewal
2
tropical resilience