Plumbago auriculata
 
Common Names: Cape Leadwort, Blue Plumbago, Skyflower
 
Zones: 9–11
 
A sprawling, evergreen shrub native to South Africa, Plumbago auriculata is beloved for its profuse clusters of powder-blue flowers and its ability to thrive in heat and humidity. Often used as a hedge, groundcover, or container specimen, it blooms nearly year-round in frost-free climates and attracts butterflies with its nectar-rich blossoms.
 
Key Features
Growth Habit: Mounding to sprawling; can be trained as a vine or clipped as a hedge
Height: Typically 3–10 ft (0.9–3 m); spreads 6–10 ft (1.8–3 m)
Trunk: Woody at base; herbaceous stems; green to reddish
Leaves: Oblong to spatulate; light green; 1–2 in. (2.5–5 cm) long; slightly sticky
Inflorescence: Terminal clusters of sky-blue to pale blue phlox-like flowers; bloom spring through fall
Fruit: Small capsules with sticky hairs; self-seeding in ideal conditions
Ecology: Native to scrub and thickets; attracts butterflies and pollinators
 
Growing Conditions
Light: Full sun to part shade
Watering: Moderate; drought-tolerant once established
Soil: Sandy to loamy; well-drained; tolerates poor soils
Temperature: Tolerates 25–100°F (–4 to 38°C); thrives in 70–90°F (21–32°C)
Humidity: Moderate to high; adapted to subtropical zones
Propagation: By cuttings or seed; fast to establish
Tolerance: Heat, drought, and salt tolerant; deer-resistant; suitable for coastal gardens
 
Landscape Use
Best suited for butterfly gardens, informal hedges, and cascading over walls or containers. Its soft blue flowers and long bloom season make it a staple in subtropical designs. Pairs well with Duranta erecta, Russelia equisetiformis, and Tecoma stans in vibrant, pollinator-friendly compositions.