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Baja Ruellia
Ruellia peninsularis
In stock
1 gallon
Plant Care
Native region:
Sonoran Desert
Water needs:
Low
Exposure:
Mature size:
Growth rate:
Full Sun
4'x4'
Moderate
Flower color:
Flower season:
Pruning:
Purple
Spring
It has a nicely rounded natural growth habit and should not be sheared into a formal shape. Its pruning needs are minimal when allowed enough room to grow to its mature size. If needed, every three to four years, prune back severely to 1 foot tall and wide again in February to rejuvenate and get rid of old, woody growth
Wildlife
Monarchs:
No
Nectar pollinators:
Yes
Nighttime pollinators:
No
Rabbit resistant:
No
Baja Ruellia, known for its vibrant purple flowers and lush green foliage, is a striking evergreen shrub that brings color and texture to desert landscapes. In spring, it bursts into a profusion of deep purple blooms that contrast beautifully with its bright green leaves. This initial flush of flowers is often followed by sporadic blooming through the summer and fall, with the potential for some blossoms even during mild winters.
This shrub thrives in full sun, making it a perfect choice for hot, west-facing exposures where it can handle reflected heat. For the best appearance, plant Baja Ruellia in well-drained soil with at least six hours of direct sunlight per day. It does not perform well in areas with too much shade, as this can reduce flowering and result in a more sprawling growth habit. The dense, rounded form of this plant reaches about 4 to 5 feet in both height and width, making it an excellent option for filling larger spaces in your landscape.
One of the standout features of Baja Ruellia is the combination of its deep purple flowers and interesting white-gray stems, which create a striking contrast. The small, glossy green leaves serve as an attractive backdrop to the one-inch-wide blooms, enhancing their vivid color. Pairing this shrub with agaves or cacti can create a visually appealing, low-water landscape.
Baja Ruellia is relatively low-maintenance, especially if planted in a frost-protected area. It maintains a dense and compact form with minimal pruning, making it ideal for gardeners looking for an easy-care shrub that provides long-lasting beauty. To ensure it stays healthy and vigorous, give it plenty of sun and avoid overwatering, which can lead to root rot. Its ability to thrive in tough conditions while providing a lush, colorful display makes it a valuable addition to any desert garden.
Baja Ruellia, is a versatile shrub that can adapt to different desert climates, including the high desert where winter temperatures can dip significantly. This shrub is hardy to about 25°F and may experience some frost damage in colder areas, but it is resilient and typically bounces back with vigorous new growth in the spring.
For those living in the high desert, Baja Ruellia's natural, rounded growth habit is best maintained without heavy shearing, as it thrives when allowed to grow to its mature size of 4 to 5 feet in height and width. If frost damage occurs, wait until the threat of freezing temperatures has passed before pruning. At that time, you can cut the plant back by half to encourage healthy regrowth.
Beyond this occasional trim, Baja Ruellia is quite low-maintenance. However, every three to four years, consider pruning it back more severely—down to about 1 foot tall and wide in early spring. This rejuvenation pruning helps eliminate old, woody stems, ensuring the plant remains dense and vibrant. Avoid pruning into a formal shape to preserve its naturally graceful appearance. When given enough room to grow, Baja Ruellia rewards gardeners with an abundance of deep purple flowers and glossy green foliage.
Growing Plants in the Desert — Important Information
The information presented here is, to the best of my knowledge, accurate and based on my research from reliable sources, observations I have made of plants growing in my, and other gardens I have visited, and observations of the plants in their native habitats. I would appreciate your feedback and experience to help me educate others!
Cacti: In my experience, cacti are much happier in the filtered shade here in the low desert of the Coachella Valley. Colors are more vibrant and they bloom more profusely, especially the non-native varieties. If you pay attention to how our native barrel and beavertail opuntia grow in the wild, it is frequently tucked in the rocks under creosote or another shrub.
Light Requirements: I have found that in our desert (Sonoran/Colorado) “full sun” plants can take and appreciate the late afternoon filtered sun, especially in the hot summer months.