White Kauai Rosemallow (Kokio Keokeo) – Hibiscus waimeae

Overview

White Kauai Rosemallow, known in Hawaiian as Kokio Keokeo (Hibiscus waimeae), is a rare, endemic species from Kauai. It is a small tree with fragrant, pure white flowers that age to pale pink, and is one of the few fragrant hibiscus species.

Botanical Profile

Characteristics

Small tree or large shrub 10–20 feet tall in habitat, smaller in cultivation. Leaves are oval, gray-green, with a silvery underside. Flowers are 3–4 inches wide, pure white with a prominent column of white stamens tipped with pink anthers, sweetly fragrant, especially in the evening. Blooms sporadically year-round in tropical climates.

Conservation & Cultivation

• Status: Endangered in the wild; cultivation aids conservation.
• Zones: 10–11; frost-tender.
• Sun: Full sun to part shade.
• Soil: Well-drained, volcanic or rocky soil preferred.
• Water: Moderate; avoid overwatering.

Significance

A culturally significant Hawaiian plant. Grown in botanical gardens and by enthusiasts to preserve genetic diversity. The fragrance is a unique trait among hibiscus.