Aphids
Whiteflies
Spider mites (rare)
mexican petunia (Ruellia simplex)
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Plant Details & Care
Growth Category
Fast
Temperature Range
20–30 °C
Light Requirement
Full Sun to Partial Shade (blooms more in full sun)
Agro Ecology
Sub-humid to Humid Tropical
Watering Frequency
2–3 times a week (moist but well-drained soil; drought-tolerant once established)
2–3 times a week (moist but well-drained soil; drought-tolerant once established)
Region
Native to Mexico and South America; adaptable to tropical and subtropical climates
Behavior
Herbaceous perennial; bushy, upright stems with lance-shaped leaves and trumpet-shaped flowers (purple, pink, or white); spreads aggressively by seeds and rhizomes; considered invasive in some regions
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Treatment
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Pests
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DiseasesLeaf spot
Root rot (in poorly drained soils) -
TreatmentPests:
Spray with neem oil or insecticidal soap; use water spray to remove aphids
Diseases:
Ensure good drainage and air circulation; prune infected leaves; avoid overhead watering
✅ Do:
Plant in sunny borders.
Use containers if you want to control spread.
Cut back after flowering for new growth.
❌ Don’t:
Allow it to overtake your garden.
Plant directly in natural wetlands (invasive).
Let soil stay soggy.