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Ruellia brittoniana (photo courtesy of Mark Turner)
Ruellia brittoniana (photo courtesy of Mark Turner)

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Zone
Zones 8, 9, 12-24, H1, H2
Full SunPartial Sun
Full, Partial
Regular Water
Moderate

Ruellia brittoniana

Acanthaceae
Perennials, Shrubs

RUELLIA

Ruellias have opposite leaves and flaring, bell-shaped flowers with five shallow lobes. Beyond their hardiness range, they are commonly grown in greenhouses.

Ruellia brittoniana

This shrubby perennial is a Mexican native that has naturalized in many areas of the southern and southwestern U.S. Grows to 3 ft. high and initially 1–1 1/2 ft. wide, but can be invasive and should be contained (by an edging, for example). Narrow dark green leaves to 3 in. long, 3/4 in. wide; 2-in.-long, lavender-blue flowers throughout the warm times of year. ‘Chi Chi’ has soft pink blossoms. ‘Katie’ is a dwarf (10–12 in.), noninvasive variety. ‘Blanca’ (white flowers) and ‘Rosa’ (pink flowers) have narrow leaves and grow to about 1 ft. high. Regular water.

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