Hawaiian Hibiscus: Native Species, Hybrid Varieties, and Care Tips for Mainland Gardens

Native Hawaiian Species

• H. arnottianus & H. waimeae: fragrant white flowers.
• H. brackenridgei (State Flower): bright yellow, up to 30'.
• H. clayi: small tree, red flowers (Kauai).
• H. furcellatus: pink, also in Caribbean/Central/South America.
• H. kokio: red/orange, 20'+.
• H. tiliaceus: widespread tropical; possibly Polynesian introduction.

Popular Hybrids

'All Aglow', 'Black Beauty', 'Bon Temps', 'Cajun Blue', 'Kona', 'Norman Lee', 'Peggy Hendri', and hundreds more—offering single- or multi-colored blooms.

Growing in Temperate Zones

• Ground year-round in zones 9–10 (frost-free).
• Elsewhere: containerize, overwinter indoors.
• Acclimate nursery plants gradually to full sun.
• Essential: very well-drained soil to prevent root rot.
• Fertilize: avoid high nitrogen (promotes leaves over flowers). Use foliar feeds with surfactant.
• Prune after frost danger passes for shape.
• Control pests (aphids, mealybugs, whiteflies) with insecticidal soap or systemic treatment.

Indoor Culture

Bright windows or grow lights; maintain humidity.