
(Ruellia simplex)

Mexican petunia, Persian violet, River petunia
Ruellia simplex is a herbaceous perennial plant that grows up to 2 feet (60 cm) tall and 3 feet (91 cm) wide. It has lance-shaped leaves and produces funnel-shaped blue or purple flowers that bloom from summer to fall.
18-36 inches (45-91 cm)
Mexican petunias prefer full sun to partial shade.
Mexican petunias prefer moderate humidity levels.
Fertilize every 4-6 weeks during the growing season with a balanced fertilizer.
Prune in early spring to remove any dead or damaged growth and to promote bushier growth.
Mexican petunias are generally pest-free, but can occasionally be affected by spider mites or whiteflies.
12-24 inches (30-60 cm)
Water regularly, making sure the soil is moist but not waterlogged.
Mexican petunias are hardy in USDA zones 8-11 and prefer warm temperatures.
Mexican petunias grow best in the spring and summer.
Mexican petunias are easy to grow and require minimal maintenance.
USDA hardiness zones 8-11
Mexican petunias are considered invasive in some areas, including Florida, where they have been known to spread rapidly and crowd out native plants.