Plumbago 'Imperial Blue'

Imperial Blue Plumbago | Plumbago auriculata ‘Imperial Blue’ | Cape Leadwort ‘Imperial Blue’ | Plumbago ‘Imperial Blue’

Imperial Blue Plumbago is a vigorous, heat‑loving perennial (grown as an annual in cooler climates) prized for its profusion of brilliant, sky‑blue, phlox‑like flowers that bloom in striking round clusters. This sprawling, semi‑climbing shrub is known for its graceful, arching habit, excellent drought tolerance, and nonstop flowering from spring until frost. Its nectar‑rich blossoms draw butterflies and bees, making it a standout choice for spilling over retaining walls, climbing trellises, cascading from large containers, and sunny landscape beds. With its robust form and reliable performance in hot conditions, Imperial Blue offers cool, refreshing color with minimal maintenance.  

Growing Imperial Blue Plumbago

Light: Full sun to partial shade; thrives in heat and produces the most abundant blooms with strong, direct sunlight.

Soil: Well‑drained soil of any texture; highly adaptable but prefers light, sandy soils and requires good drainage.

Water: Low to moderate; water regularly until established, then highly drought‑tolerant. Allow the topsoil to dry slightly between waterings.

Maintenance: Deadheading is unnecessary. Prune vigorously in late winter or early spring to control its sprawling shape and encourage a thick flush of new growth and continuous blooms.

Wildlife: Highly attractive to butterflies and bees; generally deer‑resistant.

Hardiness: Perennial in USDA zones 9–11; widely grown as a summer annual or patio plant in cooler regions.

Shipping Info

Imperial Blue Plumbago plants are shipped as healthy young starts in 4" nursery pots. Allow 1–2 weeks after arrival for plants to recover from shipping and resume active growth before repotting or planting outdoors.