Shrub
Baja fairy duster
Calliandra californica · Fabaceae
Also called: red fairy duster, Baja red fairy duster, tabardillo
Baja fairy duster (Calliandra californica) is a low-water shrub well suited to Tucson and the low desert. It grows to 4-5 ft H x 4-5 ft W in full sun, with a moderate growth rate.
Baja fairy duster at a glance
- Water use
- Low (established)
- Sun
- Full sun; tolerates reflected heat. Blooms most heavily in full sun.
- Mature size
- 4-5 ft H x 4-5 ft W
- Growth rate
- Moderate
- Bloom
- Bright red (deep crimson) powderpuff flowers, Nearly year-round in mild winters, heaviest spring through fall; flushes after warm weather and monsoon
- Cold hardiness
- Hardy to about 20-25°F; frost-tender, may freeze back in hard frost but recovers; USDA zones 9-11
- Soil
- Needs good drainage; tolerates poor, rocky, sandy, and alkaline desert soils.
- Native range
- Baja California, Mexico (not native to Arizona, but widely adapted to the Sonoran low desert)
- Best used as
- Hummingbird and pollinator gardens, Accent and foundation shrub, Informal hedge or screen, Xeriscape and desert gardens, Patio and container plantings
- Wildlife
- Outstanding hummingbird plant; red powderpuff flowers also attract butterflies and native bees nearly year-round
- Toxicity
- Not known to be toxic to humans or pets
How to grow Baja fairy duster in Tucson & the low desert
Watering
Drought tolerant once established but blooms and looks best with regular deep watering; in Tucson water established plants every 1-2 weeks in summer, monthly in winter. More water yields more bloom; too little reduces flowering.
Fertilizer & nutrients
Little needed; a nitrogen-fixing legume. A light spring feeding can boost growth and bloom but is optional.
Pruning & care
Prune to shape anytime; cut back hard in late winter/early spring to control size, remove frost damage, and rejuvenate. Tolerates regular tip-pruning to keep dense; avoid heavy shearing.
Notes
Prized for near year-round bright red powderpuff blooms and as a magnet for hummingbirds; showier and more continuously flowering than the native pink C. eriophylla but more frost-tender. Native to Baja California, not Arizona, though thoroughly at home in Tucson landscapes. Nitrogen-fixing legume.
Sources: AMWUA Landscape Plants for the Arizona Desert; Arizona-Sonora Desert Museum; University of Arizona Cooperative Extension; Tohono Chul / Tucson Botanical Gardens