Baja Ruellia

Ruellia peninsularis

A southwestern U.S. native shrub that produces dense masses of deep blue, almost purple, petunia-like flowers against light green foliage. Forms a naturally neat, mounded form. Ideal for a border or accent in hot, sunny gardens with lean, fast draining soil. Heat and drought tolerant. Evergreen.
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Your climate might be too cold for this plant:


Full sun, Partial sun

Once established, water occasionally; more in extreme heat.


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Botanical Pronunciationroo-EL-ee-uh pen-in-soo-LAIR-iss
Average Size at MaturityQuickly reaches 3 to 4 ft. tall, 2 to 3 ft. wide.
Bloom TimeSpring through Summer
Deciduous/ EvergreenSemi-evergreen
Flower AttributeLong Bloom Season, Showy Flowers
Flower ColorPurple
Foliage ColorGreen
Garden StyleRustic
Growth HabitRounded
Growth RateFast
Landscape UseBorder, Mass Planting, Rock Garden, Urban Garden
Light NeedsFull sun, Partial sun
Special FeatureEasy Care, Waterwise, Fast Growing, Heat Loving
Water NeedsLow
Watering NeedsOnce established, water occasionally; more in extreme heat.
Companion PlantsDesert Willow (Chilopsis); Creeping Phlox (Phlox subulata); Cranesbill (Geranium); Agave (Agave); Dracaena Palm (Cordyline); Butterfly Weed (Asclepias)

Grows easily in average, well-drained soils. Water deeply, regularly during the first growing season to establish an extensive root system. Once established, reduce frequency; tolerates moderate drought. Prune old foliage before new leaves emerge in early spring.

This Plant's Growing Zones: 9-11

Your USDA Cold Hardiness Zone:

Your climate may be too cold for this plant