Leaf retention: Evergreen to cold-deciduous.
Growth rate: Moderate.
Mature Size: 2-5' high and wide.
Flowers: Blue or purple, 1" long and wide, trumpet-shaped, five lobes.
Bloom: All year in regions without freezes. Largest bloom in spring.
Fruit: Small seeds.
Leaves: Green, downy, soft.
Stems: No thorns.
Wildlife: Attracts hummingbirds.
Toxic / Danger: No.
Cultivation and Uses
USDA hardiness zones: 9-11.
Heat tolerant: Yes.
Drought tolerant: Yes.
Sun: Full sun to part shade.
Water once established: Once or twice a month.
Soil: Well drained, pH 5.6-8.5 (acidic to alkaline).
Planting: Can be grown in large container.
Prune: After last frost to remove winter damage and to shape.
Propagation: Seed or cuttings / layering.
Other common names are Desert Petunia and Baja Ruellia. This species is
non-invasive, unlike Ruellia brittoniana, a moderate water plant with long,
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